LoRa APRS header is now added to the RX payload

marcel 2 years ago
parent b4d294e751
commit da1a45dad5
  1. 237
      AXUDPServer.py
  2. 24
      CHANGELOG.md
  3. 80
      INSTALL.md
  4. 280
      KissHelper.py
  5. 237
      LICENSE
  6. 177
      LoraAprsKissTnc.py
  7. 17
      README.md
  8. 33
      RPi-LoRa-KISS-TNC.ini
  9. 61
      Start_lora-tnc.py
  10. 94
      TCPServer.py
  11. 440
      aprx/aprx.conf.lora-aprs
  12. 411
      aprx/aprx.conf.original
  13. 24
      config.py
  14. 54
      multi-sf-save.txt
  15. 661
      pySX127x/LICENSE
  16. 319
      pySX127x/README.md
  17. 951
      pySX127x/SX127x/LoRa.py
  18. 76
      pySX127x/SX127x/LoRaArgumentParser.py
  19. 1
      pySX127x/SX127x/__init__.py
  20. 135
      pySX127x/SX127x/board_config.py
  21. 190
      pySX127x/SX127x/constants.py
  22. 1
      pySX127x/VERSION
  23. 49
      pySX127x/lora_util.py
  24. 118
      pySX127x/rx_cont.py
  25. 29
      pySX127x/socket_client.py
  26. 127
      pySX127x/socket_transceiver.py
  27. 132
      pySX127x/test_lora.py
  28. 138
      pySX127x/tx_beacon.py
  29. 7
      start_all.sh

@ -0,0 +1,237 @@
#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import print_function
RECV_BUFFER_LENGTH = 1024
from threading import Thread
import socket
from KissHelper import SerialParser
from array import array
CRCTAB = array("H",[
61560,57841,54122,49891,46684,42965,38222,33991,31792,28089,24354,20139,14868,11165,6406,2191,
57593,61808,50155,53858,42717,46932,34255,37958,27825,32056,20387,24106,10901,15132,2439,6158,
53626,49395,62056,58337,38750,34519,46156,42437,23858,19643,32288,28585,6934,2719,14340,10637,
49659,53362,58089,62304,34783,38486,42189,46404,19891,23610,28321,32552,2967,6686,10373,14604,
45692,41973,37230,32999,62552,58833,55114,50883,15924,12221,7462,3247,30736,27033,23298,19083,
41725,45940,33263,36966,58585,62800,51147,54850,11957,16188,3495,7214,26769,31000,19331,23050,
37758,33527,45164,41445,54618,50387,63048,59329,7990,3775,15396,11693,22802,18587,31232,27529,
33791,37494,41197,45412,50651,54354,59081,63296,4023,7742,11429,15660,18835,22554,27265,31496,
29808,26105,22370,18155,12884,9181,4422,207,63544,59825,56106,51875,48668,44949,40206,35975,
25841,30072,18403,22122,8917,13148,455,4174,59577,63792,52139,55842,44701,48916,36239,39942,
21874,17659,30304,26601,4950,735,12356,8653,55610,51379,64040,60321,40734,36503,48140,44421,
17907,21626,26337,30568,983,4702,8389,12620,51643,55346,60073,64288,36767,40470,44173,48388,
13940,10237,5478,1263,28752,25049,21314,17099,47676,43957,39214,34983,64536,60817,57098,52867,
9973,14204,1511,5230,24785,29016,17347,21066,43709,47924,35247,38950,60569,64784,53131,56834,
6006,1791,13412,9709,20818,16603,29248,25545,39742,35511,47148,43429,56602,52371,65032,61313,
2039,5758,9445,13676,16851,20570,25281,29512,35775,39478,43181,47396,52635,56338,61065,65280
])
def logf(message):
import sys
print(message, file=sys.stderr)
class AXUDPServer(Thread):
'''AXUDP Server to communicate with the digipeater'''
txQueue = None
# host and port as configured in aprx/aprx.conf.lora-aprs < interface > section
def __init__(self, txQueue, localHost="127.0.0.1", localPort=10001, remoteHost="127.0.0.1", remotePort="20000"):
Thread.__init__(self)
self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.socket.bind((localHost, localPort))
self.remoteHost=remoteHost
self.remotePort=remotePort
self.data = str()
self.txQueue = txQueue
def run(self):
while True:
frame = self.socket.recv(RECV_BUFFER_LENGTH)
print("TX:",self.axtostr(frame))
self.txQueue.put(self.axtostr(frame).encode('utf-8'), block=False)
def __del__(self):
self.socket.shutdown()
def send(self, data, metadata):
self.sendax(data, (self.remoteHost, self.remotePort), metadata)
#self.socket.sendall(data)
def axcall(self, text, pos):
l=len(text)
a=""
print(text)
while (pos<l) and (len(a)<6) and ((text[pos]>=ord("0")) and (text[pos]<=ord("9")) or (text[pos]>=ord("A")) and (text[pos]<=ord("Z"))):
a+=chr(text[pos]<<1)
pos+=1
while len(a)<6: a+=chr(ord(" ")<<1) #fill with spaces
ssid=0
if (pos<l) and (text[pos]==ord("-")):
pos+=1
if (pos<l) and (text[pos]>=ord("0")) and (text[pos]<=ord("9")):
ssid+=text[pos]-ord("0")
pos+=1
if (pos<l) and (text[pos]>=ord("0")) and (text[pos]<=ord("9")):
ssid=ssid*10 + text[pos]-ord("0")
pos+=1
if ssid>15: ssid=15
ssid=(ssid+48)<<1
if (pos<l) and (text[pos]==ord("*")):
ssid|=0x80
pos+=1
a+=chr(ssid)
return a, pos
def udpcrc(self, frame, topos):
c=0
for p in range(topos): c = (c >> 8) ^ CRCTAB[(ord(frame[p]) ^ c) & 0xff]
return c
def sendax(self, text, ip, values=False):
a,p=self.axcall(text, 0) #src call
if (p>=len(text)) or (text[p]!=ord(">")):
print("fehler 1")
return
ax,p=self.axcall(text, p+1) #dest call
ax+=a
hbit=0
while True: #via calls
if p>=len(text):
print("found no end of address")
return #found no end of address
if text[p]==ord(":"): break #end of address field
if text[p]!=ord(","):
print("via path error")
return #via path error
if len(ax)>=70:
print("too many via calls")
return #too many via calls
a,p=self.axcall(text, p+1)
ax+=a
hp=len(ax)-1
if (ord(ax[hp]) & 0x80)!=0: hbit=hp #store last h-bit
p+=1
a=""
if values:
a="\x01\x30" #axudp v2 start
if 'level' in values.keys():
v=values["level"]
a+="V"+str(round(v))+" " #axudp v2 append level
if 'quality' in values.keys():
v=values["quality"]
a+="Q"+str(round(v))+" " #axudp v2 append quality
if 'txdel' in values.keys():
v=values["txdel"]
a+="T"+str(round(v))+" " #axudp v2 append quality
if 'snr' in values.keys():
v=values["snr"]
a+="S"+str(round(v))+" " #axudp v2 append snr
a+="\x00" #axudp2 end
i=0
for i in range(len(ax)):
ch=ord(ax[i])
if (i%7==6) and (i>=20) and (i<hbit): ch|=0x80 #set h-bit on all via calls before
if i+1==len(ax): ch|=1 #set ent of address bit
a+=chr(ch)
a+="\x03\xf0" #ui frame pid F0
i=0
while p<len(text) and i < 256: #append payload
a+=chr(text[p])
p+=1
i+=1 #max 256bytes
#for ch in b: print(hex(ord(ch)))
sock=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
c=self.udpcrc(a, len(a))
a+=chr(c & 0xff)
a+=chr(c>>8)
sa=array("B",[0]*len(a))
for i in range(0,len(a)): sa[i]=ord(a[i])
print(sa)
print(ip)
res=sock.sendto(sa, ip)
## RX:
def callstr(self, b, p):
s=""
for i in range(6):
ch=ord(b[p+i])>>1
if ch<32: s+="^" #show forbidden ctrl in call
elif ch>32:s+=chr(ch) #call is filled with blanks
ssid=(ord(b[p+6])>>1) & 0x0f
if ssid: s+="-"+str(ssid)
return s
def axtostr(self, axbuf):
b=""
for x in axbuf:
b+=chr(x)
le=len(b)
if le<2:
return ""
le-=2
c=self.udpcrc(b, le)
if (b[le]!=chr(c & 0xff)) or (b[le+1]!=chr(c>>8)):
return "" #crc error
i=0
if axbuf[0]==1: #axudp v2
while (i<len(axbuf)) and (axbuf[i]!=0): i+=1
i+=1
b=""
while i<len(axbuf):
b+=chr(axbuf[i])
i+=1
s=""
le=len(b)
if le>=18: #2 calls + ctrl + pid + crc
le-=2
s=self.callstr(b, 7) #src call
s+=">"+self.callstr(b, 0) #destination call
p=14
hbit=False
while (((not (ord(b[p-1]) & 1)))) and (p+6<le): #via path
if ord(b[p+6])>=128:
hbit=True
elif hbit: #call before had hbit
s+="*"
hbit=False
s+=","+callstr(b, p)
p+=7
if hbit: s+="*" #last call had hbit
p+=2 #pid, ctrl
s+=":"
while p<le: #payload may contain ctrl characters
s+=b[p]
p+=1
return s
if __name__ == '__main__':
'''Test program'''
import time
from multiprocessing import Queue
TCP_HOST = "0.0.0.0"
TCP_PORT = 10001
# frames to be sent go here
KissQueue = Queue()
server = AXUDPServer(TCP_HOST, TCP_PORT, KissQueue)
server.setDaemon(True)
server.start()
while True:
server.send(
"\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90q\x03\xf0!4725.51N/00939.86E[322/002/A=001306 Batt=3.99V\xc0")
data = KissQueue.get()
print("Received KISS frame:" + repr(data))

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# Changelog
All notable changes to this project will be documented in this file.
Added : for new features.
Changed : for changes in existing functionality.
Deprecated: for soon-to-be removed features.
Removed : for now removed features.
Fixed : for any bug fixes.
Security : in case of vulnerabilities.
## [0.0.1] - 2022-01-31
### Added
- Lora and TCP settings are now configurable via configuration file RPi-LoRa-KISS-TNC.ini
### Changed
- Better encoding of AX.25 frames: less/no crashes due to corrupted incomming frames
### Deprecated
- Configuration via config.py
### Fixed
- LoRa APRS header (<\xff\x01) was not added to the payload, due to an indentation fault. Long live Python!

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# Installation and running the RPi-LoRa-shield with APRX
## Install needed packages
`
sudo apt install python3 python3-rpi.gpio python3-spidev aprx screen git python3-pil python3-smbus
`
## Checkout the code
Clone this repository.
## Configuration of APRX
```
In /etc/aprx.conf:
<interface>
tcp-device 127.0.0.1 10001 KISS
callsign NOCALL-4 # callsign defaults to $mycall
tx-ok true # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
</interface>
```
## Start the LoRa KISS TNC
```
python3 Start_lora-tnc.py &
```
# Alternative method using the AX.25 stack
This method is more complicated, but also more versitile as not all programs can communicate to a KISS device over TCP.
## Install needed packages
```
sudo apt install python3 python3-rpi.gpio python3-spidev aprx screen git python3-pil python3-smbus
```
## Checkout the code
Clone this repository.
## Configuration of APRX
```
In /etc/aprx.conf
<interface>
ax25-device $mycall
tx-ok true # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
</interface>
```
## Install and configure AX.25 stack
```
sudo apt install socat libax25 ax25-apps ax25-tools
sudo nano /etc/ax25/axports
add:
ax0 NOCALL-3 9600 255 2 430.775 MHz LoRa
```
## Start the LoRa KISS TNC
```
python3 Start_lora-tnc.py &
```
## Redirect KISS over TCP to AX.25 device
```
sudo socat PTY,raw,echo=0,link=/tmp/kisstnc TCP4:127.0.0.1:10001
sudo kissattach /tmp/kisstnc ax0
```

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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This program provides basic KISS AX.25 APRS frame encoding and decoding.
# Note that only APRS relevant structures are tested. It might not work
# for generic AX.25 frames.
# 11/2019 by Thomas Kottek, OE9TKH
#
# Inspired by:
# * Python script to decode AX.25 from KISS frames over a serial TNC
# https://gist.github.com/mumrah/8fe7597edde50855211e27192cce9f88
#
# * Sending a raw AX.25 frame with Python
# https://thomask.sdf.org/blog/2018/12/15/sending-raw-ax25-python.html
#
# TODO: remove escapes on decoding
#
# Changes by PE1RXF
#
# 2022-01-23: - in encode_address() added correct handling of has_been_repeated flag '*'
# 2022-01-28: - in encode_kiss() and encode_address(): better exeption handling for corrupted or mal-formatted APRS frames
#
import struct
KISS_FEND = 0xC0 # Frame start/end marker
KISS_FESC = 0xDB # Escape character
KISS_TFEND = 0xDC # If after an escape, means there was an 0xC0 in the source message
KISS_TFESC = 0xDD # If after an escape, means there was an 0xDB in the source message
# Addresses must be 6 bytes plus the SSID byte, each character shifted left by 1
# If it's the final address in the header, set the low bit to 1
# Ignoring command/response for simple example
def encode_address(s, final):
if b"-" not in s:
s = s + b"-0" # default to SSID 0
call, ssid = s.split(b'-')
if len(call) < 6:
call = call + b" "*(6 - len(call)) # pad with spaces
encoded_call = [x << 1 for x in call[0:6]]
encoded_ssid = 0b00000000
# If ssid ends with *, the message has been repeated, so we have to set the 'has_been_repeated' flag and remove the * from the ssid
if ssid[-1] == 42:
# print("Message has been repeated")
ssid = ssid[:-1]
encoded_ssid |= 0b10000000
# If SSID was not pressent (and we added the default -0 to it), the has_been_repeated flag could be at the end of the call, so check that as well
# Also, there is a lot of bad software around (including this code) and ignorance of the specifications (are there any specs for LoRa APRS?), so always check for the has_been_repeated flag
if call[-1] == 42:
call = call[:-1]
encoded_ssid |= 0b10000000
# SSID should now be one or two postions long and contain a number (idealy between 0 and 15).
if len(ssid) is 1 and ssid[0] > 47 and ssid[0] < 58:
encoded_ssid |= (int(ssid) << 1) | 0b01100000 | (0b00000001 if final else 0)
elif len(ssid) is 2 and ssid[0] > 47 and ssid[0] < 58 and ssid[1] > 47 and ssid[2] < 58:
encoded_ssid |= (int(ssid) << 1) | 0b01100000 | (0b00000001 if final else 0)
else:
return None
return encoded_call + [encoded_ssid]
def decode_address(data, cursor):
(a1, a2, a3, a4, a5, a6, a7) = struct.unpack("<BBBBBBB", data[cursor:cursor + 7])
hrr = a7 >> 5
ssid = (a7 >> 1) & 0xf
ext = a7 & 0x1
addr = struct.pack("<BBBBBB", a1 >> 1, a2 >> 1, a3 >> 1, a4 >> 1, a5 >> 1, a6 >> 1)
if ssid != 0:
call = addr.strip() + "-{}".format(ssid).encode()
else:
call = addr
return (call, hrr, ext)
########################################################################
# Encode string from LoRa radio to AX.25 over KISS
#
# We must make no assumptions as the incomming frame could be carbage.
# So make sure we think of everthing in order to prevent crashes.
#
# The original code from Thomas Kottek did a good job encoding propper APRS frames.
# But when the frames where not what they should be, the program could crash.
#
########################################################################
def encode_kiss(frame):
# First check: do we have a semi column (seperator path field and data field)
# Note that we could still be wrong: for example when the field seperator is corrupted and we now find a semi column from, lets say, an internet address in the data field...
if not b":" in frame:
return None
# Split the frame in a path field and a data field
path = frame.split(b":")[0]
data_field = frame[frame.find(b":") + 1:]
# The source address is always followed by a greather than sign, so lets see if its there.
# There is always a change that there is another greather than sign because the frame could be corrupted...
if not b">" in path:
return None
# Split the path into a source address and a digi-path array (because digis should be seperated by commas, but again, corruption....)
src_addr = path.split(b">")[0]
digis = path[path.find(b">") + 1:].split(b",")
# destination address
return_value = encode_address(digis.pop(0).upper(), False)
if return_value is None:
return None
packet = return_value
# source address
return_value = encode_address(src_addr.upper(), len(digis) == 0)
if return_value is None:
return None
packet += return_value
# digipeaters
for digi in digis:
final_addr = digis.index(digi) == len(digis) - 1
return_value = encode_address(digi.upper(), final_addr)
if return_value is None:
return None
packet += return_value
# control field
packet += [0x03] # This is an UI frame
# protocol ID
packet += [0xF0] # No protocol
# information field
packet += frame[frame.find(b":") + 1:]
# Escape the packet in case either KISS_FEND or KISS_FESC ended up in our stream
packet_escaped = []
for x in packet:
if x == KISS_FEND:
packet_escaped += [KISS_FESC, KISS_TFEND]
elif x == KISS_FESC:
packet_escaped += [KISS_FESC, KISS_TFESC]
else:
packet_escaped += [x]
# Build the frame that we will send to Dire Wolf and turn it into a string
kiss_cmd = 0x00 # Two nybbles combined - TNC 0, command 0 (send data)
kiss_frame = [KISS_FEND, kiss_cmd] + packet_escaped + [KISS_FEND]
try:
output = bytearray(kiss_frame)
except ValueError:
print("Invalid value in frame.")
return None
return output
def decode_kiss(frame):
result = b""
pos = 0
if frame[pos] != 0xC0 or frame[len(frame) - 1] != 0xC0:
print(frame[pos], frame[len(frame) - 1])
return None
pos += 1
pos += 1
# DST
(dest_addr, dest_hrr, dest_ext) = decode_address(frame, pos)
pos += 7
# print("DST: ", dest_addr)
# SRC
(src_addr, src_hrr, src_ext) = decode_address(frame, pos)
pos += 7
# print("SRC: ", src_addr)
result += src_addr.strip()
# print(type(result), type(dest_addr.strip()))
result += b">" + dest_addr.strip()
# REPEATERS
ext = src_ext
while ext == 0:
rpt_addr, rpt_hrr, ext = decode_address(frame, pos)
# print("RPT: ", rpt_addr)
pos += 7
result += b"," + rpt_addr.strip()
result += b":"
# CTRL
# (ctrl,) = struct.unpack("<B", frame[pos])
ctrl = frame[pos]
pos += 1
if (ctrl & 0x3) == 0x3:
#(pid,) = struct.unpack("<B", frame[pos])
pid = frame[pos]
# print("PID="+str(pid))
pos += 1
result += frame[pos:len(frame) - 1]
elif (ctrl & 0x3) == 0x1:
# decode_sframe(ctrl, frame, pos)
print("SFRAME")
return None
elif (ctrl & 0x1) == 0x0:
# decode_iframe(ctrl, frame, pos)
print("IFRAME")
return None
return result
class SerialParser():
'''Simple parser for KISS frames. It handles multiple frames in one packet
and calls the callback function on each frame'''
STATE_IDLE = 0
STATE_FEND = 1
STATE_DATA = 2
KISS_FEND = KISS_FEND
def __init__(self, frame_cb=None):
self.frame_cb = frame_cb
self.reset()
def reset(self):
self.state = self.STATE_IDLE
self.cur_frame = bytearray()
def parse(self, data):
'''Call parse with a string of one or more characters'''
for c in data:
if self.state == self.STATE_IDLE:
if c == self.KISS_FEND:
self.cur_frame.append(c)
self.state = self.STATE_FEND
elif self.state == self.STATE_FEND:
if c == self.KISS_FEND:
self.reset()
else:
self.cur_frame.append(c)
self.state = self.STATE_DATA
elif self.state == self.STATE_DATA:
self.cur_frame.append(c)
if c == self.KISS_FEND:
# frame complete
if self.frame_cb:
self.frame_cb(self.cur_frame)
self.reset()
if __name__ == "__main__":
# Playground for testing
# frame = "\xc0\x00\x82\xa0\xa4\xb0dr`\x9e\x8ar\xa8\x96\x90u\x03\xf0!4725.73NR00939.61E&Experimental LoRa iGate\xc0"
frame = "\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90q\x03\xf0!4725.51N/00939.86E[322/002/A=001306 Batt=3.99V\xc0"
# print(decode_kiss(frame))
# encoded = encode_kiss("OE9TKH-8>APRS,RELAY,BLA:!4725.51N/00939.86E[322/002/A=001306 Batt=3")
# encoded = encode_kiss("OE9TKH-8>APRS,digi-3,digi-2:!4725.51N/00939.86E[322/002/A=001306 Batt=3")
# print((decode_kiss(encoded)))
# print((decode_kiss("\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90t\xae\x92\x88\x8ab@\x03\x03\xf0}OE9GHV-10>APMI06,TCPIP,OE9TKH-10*:@110104z4726.55N/00950.63E&WX3in1 op. Holger U=14.2V,T=8.8C\xc0")))
def newframe(frame):
print(repr(frame))
two_example_frames = "\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90u\x03\xf0}SOTA>APZS16,TCPIP,OE9TKH-10*::OE9TKH-8 :<Ass/Ref> <Freq> <Mode> [call] [comment]{7ba\xc0\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90u\x03\xf0}SOTA>APZS16,TCPIP,OE9TKH-10*::OE9TKH-8 :/mylast{7bb\xc0\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90u\x03\xf0}SOTA>APZS16,TCPIP,OE9TKH-10*::OE9TKH-8 :/last{7bc\xc0\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90u\x03\xf0}SOTA>APZS16,TCPIP,OE9TKH-10*::OE9TKH-8 :/time(/zone){7bd\xc0"
sp = SerialParser(newframe)
sp.parse(two_example_frames)

@ -1,71 +1,232 @@
GNU LESSER GENERAL PUBLIC LICENSE
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <http://www.gnu.org/philosophy/why-not-lgpl.html>.

@ -0,0 +1,177 @@
#!/usr/bin/python
# -*- coding: utf-8 -*-
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
from asyncio import QueueEmpty
import traceback
sys.path.insert(0, './pySX127x/')
from pySX127x.SX127x.LoRa import LoRa
from pySX127x.SX127x.constants import *
from pySX127x.SX127x.board_config import BOARD
import time
#import KissHelper
class LoraAprsKissTnc(LoRa):
LORA_APRS_HEADER = b"<\xff\x01"
# APRS data types
DATA_TYPES_POSITION = b"!'/@`"
DATA_TYPE_MESSAGE = b":"
DATA_TYPE_THIRD_PARTY = b"}"
queue = None
server = None
# init has LoRa APRS default config settings - might be initialized different when creating object with parameters
def __init__(self, queue, server, frequency=433.775, preamble=8, spreadingFactor=12, bandwidth=BW.BW125,
codingrate=CODING_RATE.CR4_5, appendSignalReport = True, paSelect = 1, MaxoutputPower = 15, outputPower = 15, verbose=False):
# Init SX127x
BOARD.setup()
super(LoraAprsKissTnc, self).__init__(verbose)
self.queue = queue
self.appendSignalReport = appendSignalReport
self.set_mode(MODE.SLEEP)
self.set_freq(frequency)
self.set_preamble(preamble)
self.set_spreading_factor(spreadingFactor)
if bandwidth == 'BW7_8':
bandwidth = BW.BW7_8
elif bandwidth == 'BW10_4':
bandwidth = BW.BW10_4
elif bandwidth == 'BW15_6':
bandwidth = BW.BW15_6
elif bandwidth == 'BW20_8':
bandwidth = BW.BW20_8
elif bandwidth == 'BW31_25':
bandwidth = BW.BW31_25
elif bandwidth == 'BW41_7':
bandwidth = BW.BW41_7
elif bandwidth == 'BW62_5':
bandwidth = BW.BW62_5
elif bandwidth == 'BW125':
bandwidth = BW.BW125
elif bandwidth == 'BW250':
bandwidth = BW.BW250
elif bandwidth == 'BW500':
bandwidth = BW.BW500
else:
bandwidth = BW.BW125
self.set_bw(bandwidth)
self.set_low_data_rate_optim(True)
if codingrate == 'CR4_5':
codingrate = CODING_RATE.CR4_5
elif codingrate == 'CR4_6':
codingrate = CODING_RATE.CR4_6
elif codingrate == 'CR4_7':
codingrate = CODING_RATE.CR4_7
elif codingrate == 'CR4_8':
codingrate = CODING_RATE.CR4_8
else:
codingrate = CODING_RATE.CR4_5
self.set_coding_rate(codingrate)
self.set_ocp_trim(100)
self.set_pa_config(paSelect, MaxoutputPower, outputPower)
self.set_max_payload_length(255)
self.set_dio_mapping([0] * 6)
self.server = server
self.reset_ptr_rx()
self.set_mode(MODE.RXCONT)
def startListening(self):
try:
while True:
# only transmit if no signal is detected to avoid collisions
if not self.get_modem_status()["signal_detected"]:
# print("RSSI: %idBm" % lora.get_rssi_value())
# FIXME: Add noise floor measurement for telemetry
if not self.queue.empty():
try:
data = self.queue.get(block=False)
if self.aprs_data_type(data) == self.DATA_TYPE_THIRD_PARTY:
# remove third party thing
data = data[data.find(self.DATA_TYPE_THIRD_PARTY) + 1:]
# Add LoRa-APRS header (original, this was indented one position further, only executed when above if-statement was true. Think it should be executed at all times.
data = self.LORA_APRS_HEADER + data
print("LoRa TX: " + repr(data))
self.transmit(data)
except QueueEmpty:
pass
time.sleep(0.50)
except KeyboardInterrupt:
BOARD.teardown()
def on_rx_done(self):
payload = self.read_payload(nocheck=True)
if not payload:
print("No Payload!")
return
rssi = self.get_pkt_rssi_value()
snr = self.get_pkt_snr_value()
data = bytes(payload)
print("LoRa RX[%idBm/%idB, %ibytes]: %s" %(rssi, snr, len(data), repr(data)))
flags = self.get_irq_flags()
if any([flags[s] for s in ['crc_error', 'rx_timeout']]):
print("Receive Error, discarding frame.")
# print(self.get_irq_flags())
self.clear_irq_flags(RxDone=1, PayloadCrcError=1, RxTimeout=1) # clear rxdone IRQ flag
self.reset_ptr_rx()
self.set_mode(MODE.RXCONT)
return
if self.server:
# remove LoRa-APRS header if present
if data[0:len(self.LORA_APRS_HEADER)] == self.LORA_APRS_HEADER:
data = data[len(self.LORA_APRS_HEADER):]
if self.appendSignalReport:
# Signal report only for certain frames, not messages!
if self.aprs_data_type(data) in self.DATA_TYPES_POSITION:
data += b" RSSI=%idBm SNR=%idB" % (rssi, snr)
self.server.send(data, {"level":rssi, "snr":snr})
self.clear_irq_flags(RxDone=1) # clear rxdone IRQ flag
self.reset_ptr_rx()
self.set_mode(MODE.RXCONT)
# self.set_mode(MODE.CAD)
def on_tx_done(self):
print("TX DONE")
self.clear_irq_flags(TxDone=1) # clear txdone IRQ flag
self.set_dio_mapping([0] * 6)
self.set_mode(MODE.RXCONT)
def transmit(self, data):
self.write_payload([c for c in data])
self.set_dio_mapping([1, 0, 0, 0, 0, 0])
self.set_mode(MODE.TX)
def aprs_data_type(self, lora_aprs_frame):
delimiter_position = lora_aprs_frame.find(b":")
try:
return lora_aprs_frame[delimiter_position + 1]
except IndexError:
return ""

@ -1,3 +1,16 @@
# RPi-LoRa-KISS-TNC
# Raspberry Pi LoRa KISS TNC
Custom version of https://github.com/tomelec/RPi-LoRa-KISS-TNC
This project was originally started by Tom Kottek (https://github.com/tomelec/RPi-LoRa-KISS-TNC). Because the program had some problems dealing with digipeated frames (it crashed when receiving a ssid with the 'has_been_digipeated' flag -*- set), I took on the task of fixing the code for my personal use.
## Software
The software controls the LoRa transceiver connected to the Raspberry´s SPI bus and emulates a KISS TNC over TCP. That makes it possible to use existing software like APRX. It is also possible to attach the KISS interface to the AX.25 stack via socat/kissattach.
## Hardware
I also designed my own (open source) hardware for it: a board holding a Raspberry Pi Zero 2 W, an SX1278 LoRa transceiver and a power supply with on/off button to safely switch on and off the system. The design files can be found on my website: [RPi LoRa_shield](https://meezenest.nl/mees/RPi_LoRa_shield.html)
### To Do
* The program (or the LoRa module) still crashes occasionally. After restarting the program (kissattach/socat/RPi-LoRa-KISS-TNC.py) it all works again. Need to investigate.
* Completely remove config.py in favour of RPi-LoRa-KISS-TNC.ini
* Add raw TCP KISS socket for true AX.25 over KISS

@ -0,0 +1,33 @@
[LoRaSettings]
# Settings for LoRa module
frequency=433.775
preamble=8
spreadingFactor=12
# Bandwidth:
# BW7_8
# BW10_4
# BW15_6
# BW20_8
# BW31_25
# BW41_7
# BW62_5
# BW125
# BW250
# BW500
bandwidth=BW125
# Coding Rate:
# CR4_5
# CR4_6
# CR4_7
# CR4_8
codingrate=CR4_5
appendSignalReport=True
paSelect = 1
MaxoutputPower = 15
outputPower = 15
[KISS]
# Settings for KISS
TCP_HOST=0.0.0.0
TCP_PORT_AX25=10001
TCP_PORT_RAW =10002

@ -0,0 +1,61 @@
#!/usr/bin/python3
# -*- coding: utf-8 -*-
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Usage: python3 Start_lora-tnc.py
#
from queue import Queue
from TCPServer import KissServer
from AXUDPServer import AXUDPServer
import config
from LoraAprsKissTnc import LoraAprsKissTnc
import configparser
# Read configuration file #
parser = configparser.ConfigParser()
parser.read('RPi-LoRa-KISS-TNC.ini')
config_frequency = float(parser.get('LoRaSettings', 'frequency'))
config_preamble = int(parser.get('LoRaSettings', 'preamble'))
config_spreadingFactor = int(parser.get('LoRaSettings', 'spreadingFactor'))
config_bandwidth = parser.get('LoRaSettings', 'bandwidth')
config_codingrate = parser.get('LoRaSettings', 'codingrate')
config_appendSignalReport = parser.get('LoRaSettings', 'appendSignalReport')
config_paSelect = int(parser.get('LoRaSettings', 'paSelect'))
config_MaxoutputPower = int(parser.get('LoRaSettings', 'MaxoutputPower'))
config_outputPower = int(parser.get('LoRaSettings', 'outputPower'))
config_TCP_HOST = parser.get('KISS', 'TCP_HOST')
config_TCP_PORT_AX25 = int(parser.get('KISS', 'TCP_PORT_AX25'))
config_TCP_PORT_RAW = int(parser.get('KISS', 'TCP_PORT_RAW'))
# TX KISS frames go here (Digipeater -> TNC)
kissQueue = Queue()
# KISSTCP or AXUDP Server for the digipeater to connect
if config.USE_AXUDP:
server = AXUDPServer(kissQueue, config.AXUDP_LOCAL_IP, config.AXUDP_LOCAL_PORT, config.AXUDP_REMOTE_IP, config.AXUDP_REMOTE_PORT)
else:
server = KissServer(kissQueue, config_TCP_HOST, config_TCP_PORT_AX25)
server.setDaemon(True)
server.start()
# LoRa transceiver instance
lora = LoraAprsKissTnc(kissQueue, server, frequency=config_frequency, preamble=config_preamble, spreadingFactor=config_spreadingFactor, bandwidth=config_bandwidth,
codingrate=config_codingrate, appendSignalReport=config_appendSignalReport, paSelect = config_paSelect, MaxoutputPower = config_MaxoutputPower, outputPower = config_outputPower,verbose=True)
# this call loops forever inside
lora.startListening()

@ -0,0 +1,94 @@
#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import print_function
RECV_BUFFER_LENGTH = 1024
import sys
from threading import Thread
import socket
from KissHelper import SerialParser
import KissHelper
def logf(message):
print(message, file=sys.stderr)
class KissServer(Thread):
'''TCP Server to be connected by the APRS digipeater'''
txQueue = None
# host and port as configured in aprx/aprx.conf.lora-aprs < interface > section
def __init__(self, txQueue, host="127.0.0.1", port=10001):
Thread.__init__(self)
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.bind((host, port))
self.socket.listen(1)
self.data = str()
self.txQueue = txQueue
self.connection = None
def run(self):
parser = SerialParser(self.queue_frame)
while True:
self.connection = None
self.connection, client_address = self.socket.accept()
parser.reset()
logf("KISS-Server: Connection from %s" % client_address[0])
while True:
data = self.connection.recv(RECV_BUFFER_LENGTH)
if data:
parser.parse(data)
else:
self.connection.close()
break
def queue_frame(self, frame):
print("KISS frame:", repr(frame))
decoded_data = KissHelper.decode_kiss(frame)
print("Decoded:", decoded_data)
self.txQueue.put(decoded_data, block=False)
def __del__(self):
self.socket.shutdown()
def send(self, data, metadata):
try:
encoded_data = KissHelper.encode_kiss(data)
except Exception as e:
print("KISS encoding went wrong (exception while parsing)")
# traceback.print_tb(e.__traceback__)
encoded_data = None
if encoded_data != None:
print("To Server: " + repr(encoded_data))
if self.connection:
self.connection.sendall(encoded_data)
else:
print("KISS encoding went wrong")
if __name__ == '__main__':
'''Test program'''
import time
from multiprocessing import Queue
TCP_HOST = "0.0.0.0"
TCP_PORT = 10001
# frames to be sent go here
KissQueue = Queue()
server = KissServer(TCP_HOST, TCP_PORT, KissQueue)
server.setDaemon(True)
server.start()
while True:
server.send(
"\xc0\x00\x82\xa0\xa4\xa6@@`\x9e\x8ar\xa8\x96\x90q\x03\xf0!4725.51N/00939.86E[322/002/A=001306 Batt=3.99V\xc0")
data = KissQueue.get()
print("Received KISS frame:" + repr(data))

@ -0,0 +1,440 @@
#
# Simple sample configuration file for the APRX-2 -- an APRS iGate and Digipeater
#
# This configuration is structured with Apache HTTPD style tags
# which then contain subsystem parameters.
#
#
# For simple case, you need to adjust 4 things:
# - Mycall parameter
# - passcode parameter in APRS-IS configuration
# - Select correct type of interface (ax25-device or serial-device)
# - Optionally set a beacon telling where this system is
# - Optionally enable digipeater with or without tx-igate
#
#
#
# Define the parameters in following order:
# 1) <aprsis> ** zero or one
# 2) <logging> ** zero or one
# 3) <interface> ** there can be multiple!
# 4) <beacon> ** zero to many
# 5) <telemetry> ** zero to many
# 6) <digipeater> ** zero to many (at most one for each Tx)
#
#
# Global macro for simplified callsign definition:
# Usable for 99+% of cases.
#
mycall N0CALL-1
#
# Global macro for simplified "my location" definition in
# place of explicit "lat nn lon mm" at beacons. Will also
# give "my location" reference for "filter m/100".
#
#myloc lat ddmm.mmN lon dddmm.mmE
<aprsis>
# The aprsis login parameter:
# Station callsignSSID used for relaying APRS frames into APRS-IS.
# Use this only to define other callsign for APRS\-IS login.
#
#login OTHERCALL-7 # login defaults to $mycall
#
# Passcode for your callsign:
# Unique code for your callsign to allow transmitting packets
# into the APRS-IS.
#
passcode -1
# APRS-IS server name and optional portnumber.
#
# WARNING: Do not change from default port number [14580]
# unless you are absolutely certain you want
# something else, and you allow that something
# else also affect your tx-igate behaviour!
#
server rotate.aprs2.net
#server euro.aprs2.net
#server asia.aprs2.net
#server noam.aprs2.net
#server soam.aprs2.net
#server aunz.aprs2.net
# Some APRS-IS servers tell every about 20 seconds to all contact
# ports that they are there and alive. Others are just silent.
# Default value is 3*"heartbeat" + some --> 120 (seconds)
#
#heartbeat-timeout 0 # Disabler of heartbeat timeout
# APRS-IS server may support some filter commands.
# See: http://www.aprs-is.net/javAPRSFilter.aspx
#
# You can define the filter as single long quoted string, or as
# many short segments with explaining comments following them.
#
# Usability of these filters for a Tx-iGate is dubious, but
# they exist in case you for example want to Tx-iGate packets
# from some source callsigns in all cases even when they are
# not in your local area.
#
#filter "possibly multiple filter specs in quotes"
#
#filter "m/100" # My-Range filter: positions within 100 km from my location
#filter "f/OH2XYZ-3/50" # Friend-Range filter: 50 km of friend's last beacon position
</aprsis>
<logging>
# pidfile is UNIX way to tell that others that this program is
# running with given process-id number. This has compiled-in
# default value of: pidfile /var/run/aprx.pid
#
pidfile /var/run/aprx.pid
# rflog defines a rotatable file into which all RF-received packets
# are logged. The host system can rotate it at any time without
# need to signal the aprx that the file has been moved.
#
rflog /var/log/aprx/aprx-rf.log
# aprxlog defines a rotatable file into which most important
# events on APRS-IS connection are logged, namely connects and
# disconnects. The host system can rotate it at any time without
# need to signal the aprx that the file has been moved.
#
aprxlog /var/log/aprx/aprx.log
# dprslog defines a rotatable file into which most important
# events on DPRS receiver gateways are logged.
# The host system can rotate it at any time without need to
# signal the aprx that the file has been moved.
#
#dprslog /var/log/aprx/dprs.log
# erlangfile defines a mmap():able binary file, which stores
# running sums of interfaces upon which the channel erlang
# estimator runs, and collects data.
# Depending on the system, it may be running on a filesystem
# that actually retains data over reboots, or it may not.
# With this backing store, the system does not loose cumulating
# erlang data over the current period, if the restart is quick,
# and does not stradle any exact minute.
# (Do restarts at 15 seconds over an even minute..)
# This file is around 0.7 MB per each interface talking APRS.
# If this file is not defined and it can not be created,
# internal non-persistent in-memory storage will be used.
#
# Built-in default value is: /var/run/aprx.state
#
#erlangfile /var/run/aprx.state
</logging>
# *********** Multiple <interface> definitions can follow *********
# ax25-device Lists AX.25 ports by their callsigns that in Linux
# systems receive APRS packets. If none are defined,
# or the system is not Linux, the AX.25 network receiver
# is not enabled. Used technologies need at least
# Linux kernel 2.4.x
#
# tx-ok Boolean telling if this device is able to transmit.
#
#<interface>
# ax25-device $mycall
# #tx-ok false # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
#</interface>
#
# The TNC serial options. Parameters are:
# - /dev/ttyUSB1 -- tty device
# - 19200 -- baud rate, supported ones are:
# 1200, 2400, 4800, 9600, 19200, 38400
# - 8n1 -- 8-bits, no parity, one stop-bit,
# no other supported modes
# - "KISS" - plain basic KISS mode
# - "XORSUM" alias "BPQCRC" - KISS with BPQ "CRC" byte
# - "SMACK" alias "CRC16" - KISS with real CRC
# - "FLEXNET" - KISS with real CRC
# - "TNC2" - TNC2 monitor format
# - "DPRS" - DPRS (RX) GW
#
#<interface>
# serial-device /dev/ttyUSB0 19200 8n1 KISS
# #callsign $mycall # callsign defaults to $mycall
# #tx-ok false # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
#</interface>
#<interface>
# serial-device /dev/ttyUSB1 19200 8n1 TNC2
# #callsign $mycall # callsign defaults to $mycall
# #tx-ok false # TNC2 monitor can not have transmitter
# #telem-to-is true # set to 'false' to disable
#</interface>
#<interface>
# serial-device /dev/ttyUSB1 19200 8n1 DPRS
# callsign dprsgwcallsign # must define actual callsign
# #tx-ok false # DPRS monitor can not do transmit
# #telem-to-is true # set to 'false' to disable
#</interface>
#
# tcp-device behaves identically to local serial port, but allows
# access to remote TCP/IP sockets. A common application is remote
# KISS modems connected to Ethernet-to-serial adapters from suppliers
# such as Lantronix.
# It's important that this remote socket is a raw TCP socket and not
# handle any byte codes as command escapes.
#
# tcp-device hostname portnumber mode
# - hostname may be a domain name, IPv4 address, or a IPv6 address
# - portnumber is any valid TCP port (1-65535)
# - mode is the same as serial-device (KISS, TNC2, etc.)
#
#<interface>
# tcp-device 192.0.2.10 10001 KISS
# #callsign $mycall # callsign defaults to $mycall
# #tx-ok false # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
#</interface>
<interface>
tcp-device 127.0.0.1 10001 KISS
callsign $mycall
tx-ok true
telem-to-is true # set to 'false' to disable
</interface>
# *********** Multiple <beacon> definitions can follow *********
<beacon>
#
# Beacons are sent out to radio transmitters AND/OR APRSIS.
# Default is "both", other modes are settable.
#
#beaconmode { aprsis | both | radio }
#
# Beacons are sent from a circullar transmission queue, total cycle time
# of that queue is 20 minutes by default, and beacons are "evenly"
# distributed along it. Actual intervals are randomized to be anything
# in between 80% and 100% of the cycle-size / number-of-beacons.
# First beacon is sent out 30 seconds after system start.
# Tune the cycle-size to be suitable to your number of defined beacons.
#
#cycle-size 20m
#
# Basic beaconed thing is positional message of type "!":
#
#beacon symbol "R&" lat "0000.00N" lon "00000.00E" comment "Rx-only iGate"
#beacon symbol "R&" $myloc comment "Rx-only iGate"
#
#Following are basic options:
# 'symbol' no default, must be defined!
# 'lat' coordinate latitude: ddmm.mmN (no default!)
# 'lon' coordinate longitude: dddmm.mmE (no default!)
# '$myloc' coordinate values taken from global 'myloc' entry,
# and usable in place of explicit 'lat'+'lon'.
# 'comment' optional tail part of the item, default is nothing
#
# Sample symbols:
# R& is for "Rx-only iGate"
# I& is for "Tx-iGate"
# /# is for "Digipeater"
# I# is for "Tx-iGate + Digipeater""
#
#Additional options are:
# 'srccall' parameter sets claimed origination address.
# 'dstcall' sets destination address, default "APRXnn"
# 'interface' parameter picks an interface (must be "tx-ok true" type)
# 'via' sets radio distribution pattern, default: none.
# 'timefix' On APRS messages with HMS timestamp (hour:min:sec), the
# system fixes appropriate field with transmit time timestamp.
#
# Message type is by default '!', which is positional no timestamp format.
# Other possible formats are definable with options:
# 'type' Single character setting type: ! = / @, default: !
# 'item' Defines a name of Item (')') type beacons.
# 'object' Defines a name of Object (';') type beacons.
#
# 'file' option tells a file at which a _raw_ APRS message content is
# expected to be found as first line of text. Line ending newline
# is removed, and no escapes are supported. The timefix is
# available, though probably should not be used.
# No \-processing is done on read text line.
#
# 'exec' option tells a computer program which returns to stdout _raw_ APRS
# message content without newline. The timefix is
# available, though probably should not be used.
# No \-processing is done on read text line.
#
# The parameter sets can vary:
# a) 'srccall nnn-n dstcall "string" symbol "R&" lat "ddmm.mmN" lon "dddmm.mmE" [comment "any text"]
# b) 'srccall nnn-n dstcall "string" symbol "R&" $myloc [comment "any text"]
# c) 'srccall nnn-n dstcall "string" raw "string"'
#
# The a) form flags on some of possible syntax errors in parameters.
# It will also create only "!" type messages. The dest parameter
# defaults to "APRS", but can be used to give other destinations.
# The via parameter can be used to add other keywords, like "NOGATE".
#
# Writing correct RAW format beacon message is very hard,
# which is evidenced by the frequency of bad syntax texts
# people so often put there... If you can not be persuaded
# not to do it, then at least VERIFY the beacon result on
# web service like findu.com, or aprs.fi
#
# Do remember that the \ -character has special treatment in the
# Aprx configuration parser. If you want a '\' on APRS content,
# then you encode it on configuration file as: '\\'
#
# Stranger combinations with explicite "transmit this to interface X":
#
#beacon file /tmp/wxbeacon.txt
#beacon interface N0CALL-3 srccall N0CALL-3 \
# raw "!0000.00NR00000.00E&Rx-only iGate"
#beacon interface N0CALL-3 srccall N0CALL-3 \
# raw "!0000.00NI00000.00E&Tx-iGate"
#beacon interface $mycall symbol "R&" $myloc \
# comment "Rx-only iGate"
#beacon interface $mycall symbol "I&" $myloc \
# comment "Tx-iGate"
#beacon exec /usr/bin/telemetry.pl
#beacon timeout 20 exec /usr/bin/telemetry.pl
#beacon interface N0CALL-3 srccall N0CALL-3 \
# timeout 20 exec /usr/bin/telemetry.pl
#
beaconmode aprsis
cycle-size 55m
beacon symbol "R&" $myloc comment "LoRa-APRS 433.775MHz/125kHz/SF12"
</beacon>
# *********** <telemetry> definition(s) follow *********
#
# The system will always send telemetry for all of its interfaces
# to APRSIS, but there is an option to define telemetry to be sent
# to radio channel by using following sections for each transmitter
# that is wanted to send out the telemetry.
#
# transmitter - callsign referring to <interface>
# via - optional via-path, only 1 callsign!
# source - one or more of <interface> callsigns for which
# the telemetry transmission is wanted for
#
#<telemetry>
# transmitter $mycall
# via TRACE1-1
# source $mycall
#</telemetry>
# *********** <digipeater> definition(s) follow *********
#
# The digipeater definitions tell transmitters that receive
# AX.25 packets from possibly multiple sources, and then what
# to do on the AX.25 headers of those messages.
#
# There is one transmitter per digipeater -- and inversely, there
# can be at most one digipeater for each transmitter.
#
# In each digipeater there is at least one <source>, usually same
# as the transmitter. You may use same <source> on multiple
# <digipeater>s. Using multiple instances of same <source> on
# a single <digipeater> does not crash the system, but it can cause
# packet duplication in case of non-APRS protocols (like AX.25 CONS)
#
# Use only at most two levels of viscous-delay in your <digipeater>.
# Immediate sending is by "0", and a delayed sending is any value
# from 1 to 9. This system does not correctly support other than
# immediate sending and one level of delay.
#
# Note: In order to igate correct when multiple receivers and
# transmitters are used on single channel, the <interface>
# definitions of each radio port must have associated
# "igate-group N" parameter which has N of value 1 to 3.
# See the aprx-manual.pdf for details.
# (Default software compilation allows you to have up to
# three channels of APRS operation.)
#
#<digipeater>
# transmitter $mycall
# #ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# #srcratelimit 10 20 # Example: by sourcecall:
# # average 10 packets/minute,
# # burst max 20 packets/minute
#
# <source>
# source $mycall
# # #relay-type digipeated # default mode is "digipeated"
# # viscous-delay 0 # no viscous delay for RF->RF digipeating
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# ## filter a/la/lo/la/lo # service area filter
# ## filter -b/CALL # always block these
# </source>
#
# # Diversity receiver which combines to the primary
# # Tx/Rx transmitter. There can be as many of these
# # as you can connect on this machine.
# #<source>
# # source RXPORT-1
# # #relay-type digipeated # default mode is "digipeated"
# # viscous-delay 0 # no viscous delay for RF->RF digipeating
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# ## filter a/la/lo/la/lo # service area filter
# ## filter -b/CALL # always block these
# </source>
#
# #<source> # APRSIS source adds a TX-IGATE behaviour
# # source APRSIS
# # relay-type third-party # Must define this for APRSIS source!
# # viscous-delay 5 # Recommendation: 5 seconds delay to give
# # # RF delivery time make itself known.
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# ## filter a/la/lo/la/lo # service area filter
# ## filter -b/CALL # always block these
# #</source>
#
# #<source> # DPRS source adds a DPRS->APRS RF gate
# # interface DPRS
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# # relay-type third-party # Must define this for DPRS source!
# #</source>
#</digipeater>
<digipeater>
transmitter $mycall
<source>
source $mycall
relay-type digipeated # default mode is "digipeated"
viscous-delay 5 # no viscous delay for RF->RF digipeating
ratelimit 10 20
filter t/m
</source>
<source> # APRSIS source adds a TX-IGATE behaviour
source APRSIS
relay-type third-party # Must define this for APRSIS source!
ratelimit 4 30
filter t/m
</source>
</digipeater>

@ -0,0 +1,411 @@
#
# Simple sample configuration file for the APRX-2 -- an APRS iGate and Digipeater
#
# This configuration is structured with Apache HTTPD style tags
# which then contain subsystem parameters.
#
#
# For simple case, you need to adjust 4 things:
# - Mycall parameter
# - passcode parameter in APRS-IS configuration
# - Select correct type of interface (ax25-device or serial-device)
# - Optionally set a beacon telling where this system is
# - Optionally enable digipeater with or without tx-igate
#
#
#
# Define the parameters in following order:
# 1) <aprsis> ** zero or one
# 2) <logging> ** zero or one
# 3) <interface> ** there can be multiple!
# 4) <beacon> ** zero to many
# 5) <telemetry> ** zero to many
# 6) <digipeater> ** zero to many (at most one for each Tx)
#
#
# Global macro for simplified callsign definition:
# Usable for 99+% of cases.
#
mycall N0CALL-1
#
# Global macro for simplified "my location" definition in
# place of explicit "lat nn lon mm" at beacons. Will also
# give "my location" reference for "filter m/100".
#
#myloc lat ddmm.mmN lon dddmm.mmE
<aprsis>
# The aprsis login parameter:
# Station callsignSSID used for relaying APRS frames into APRS-IS.
# Use this only to define other callsign for APRS\-IS login.
#
#login OTHERCALL-7 # login defaults to $mycall
#
# Passcode for your callsign:
# Unique code for your callsign to allow transmitting packets
# into the APRS-IS.
#
passcode -1
# APRS-IS server name and optional portnumber.
#
# WARNING: Do not change from default port number [14580]
# unless you are absolutely certain you want
# something else, and you allow that something
# else also affect your tx-igate behaviour!
#
server rotate.aprs2.net
#server euro.aprs2.net
#server asia.aprs2.net
#server noam.aprs2.net
#server soam.aprs2.net
#server aunz.aprs2.net
# Some APRS-IS servers tell every about 20 seconds to all contact
# ports that they are there and alive. Others are just silent.
# Default value is 3*"heartbeat" + some --> 120 (seconds)
#
#heartbeat-timeout 0 # Disabler of heartbeat timeout
# APRS-IS server may support some filter commands.
# See: http://www.aprs-is.net/javAPRSFilter.aspx
#
# You can define the filter as single long quoted string, or as
# many short segments with explaining comments following them.
#
# Usability of these filters for a Tx-iGate is dubious, but
# they exist in case you for example want to Tx-iGate packets
# from some source callsigns in all cases even when they are
# not in your local area.
#
#filter "possibly multiple filter specs in quotes"
#
#filter "m/100" # My-Range filter: positions within 100 km from my location
#filter "f/OH2XYZ-3/50" # Friend-Range filter: 50 km of friend's last beacon position
</aprsis>
<logging>
# pidfile is UNIX way to tell that others that this program is
# running with given process-id number. This has compiled-in
# default value of: pidfile /var/run/aprx.pid
#
pidfile /var/run/aprx.pid
# rflog defines a rotatable file into which all RF-received packets
# are logged. The host system can rotate it at any time without
# need to signal the aprx that the file has been moved.
#
rflog /var/log/aprx/aprx-rf.log
# aprxlog defines a rotatable file into which most important
# events on APRS-IS connection are logged, namely connects and
# disconnects. The host system can rotate it at any time without
# need to signal the aprx that the file has been moved.
#
aprxlog /var/log/aprx/aprx.log
# dprslog defines a rotatable file into which most important
# events on DPRS receiver gateways are logged.
# The host system can rotate it at any time without need to
# signal the aprx that the file has been moved.
#
#dprslog /var/log/aprx/dprs.log
# erlangfile defines a mmap():able binary file, which stores
# running sums of interfaces upon which the channel erlang
# estimator runs, and collects data.
# Depending on the system, it may be running on a filesystem
# that actually retains data over reboots, or it may not.
# With this backing store, the system does not loose cumulating
# erlang data over the current period, if the restart is quick,
# and does not stradle any exact minute.
# (Do restarts at 15 seconds over an even minute..)
# This file is around 0.7 MB per each interface talking APRS.
# If this file is not defined and it can not be created,
# internal non-persistent in-memory storage will be used.
#
# Built-in default value is: /var/run/aprx.state
#
#erlangfile /var/run/aprx.state
</logging>
# *********** Multiple <interface> definitions can follow *********
# ax25-device Lists AX.25 ports by their callsigns that in Linux
# systems receive APRS packets. If none are defined,
# or the system is not Linux, the AX.25 network receiver
# is not enabled. Used technologies need at least
# Linux kernel 2.4.x
#
# tx-ok Boolean telling if this device is able to transmit.
#
#<interface>
# ax25-device $mycall
# #tx-ok false # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
#</interface>
#
# The TNC serial options. Parameters are:
# - /dev/ttyUSB1 -- tty device
# - 19200 -- baud rate, supported ones are:
# 1200, 2400, 4800, 9600, 19200, 38400
# - 8n1 -- 8-bits, no parity, one stop-bit,
# no other supported modes
# - "KISS" - plain basic KISS mode
# - "XORSUM" alias "BPQCRC" - KISS with BPQ "CRC" byte
# - "SMACK" alias "CRC16" - KISS with real CRC
# - "FLEXNET" - KISS with real CRC
# - "TNC2" - TNC2 monitor format
# - "DPRS" - DPRS (RX) GW
#
#<interface>
# serial-device /dev/ttyUSB0 19200 8n1 KISS
# #callsign $mycall # callsign defaults to $mycall
# #tx-ok false # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
#</interface>
#<interface>
# serial-device /dev/ttyUSB1 19200 8n1 TNC2
# #callsign $mycall # callsign defaults to $mycall
# #tx-ok false # TNC2 monitor can not have transmitter
# #telem-to-is true # set to 'false' to disable
#</interface>
#<interface>
# serial-device /dev/ttyUSB1 19200 8n1 DPRS
# callsign dprsgwcallsign # must define actual callsign
# #tx-ok false # DPRS monitor can not do transmit
# #telem-to-is true # set to 'false' to disable
#</interface>
#
# tcp-device behaves identically to local serial port, but allows
# access to remote TCP/IP sockets. A common application is remote
# KISS modems connected to Ethernet-to-serial adapters from suppliers
# such as Lantronix.
# It's important that this remote socket is a raw TCP socket and not
# handle any byte codes as command escapes.
#
# tcp-device hostname portnumber mode
# - hostname may be a domain name, IPv4 address, or a IPv6 address
# - portnumber is any valid TCP port (1-65535)
# - mode is the same as serial-device (KISS, TNC2, etc.)
#
#<interface>
# tcp-device 192.0.2.10 10001 KISS
# #callsign $mycall # callsign defaults to $mycall
# #tx-ok false # transmitter enable defaults to false
# #telem-to-is true # set to 'false' to disable
#</interface>
# *********** Multiple <beacon> definitions can follow *********
<beacon>
#
# Beacons are sent out to radio transmitters AND/OR APRSIS.
# Default is "both", other modes are settable.
#
#beaconmode { aprsis | both | radio }
#
# Beacons are sent from a circullar transmission queue, total cycle time
# of that queue is 20 minutes by default, and beacons are "evenly"
# distributed along it. Actual intervals are randomized to be anything
# in between 80% and 100% of the cycle-size / number-of-beacons.
# First beacon is sent out 30 seconds after system start.
# Tune the cycle-size to be suitable to your number of defined beacons.
#
#cycle-size 20m
#
# Basic beaconed thing is positional message of type "!":
#
#beacon symbol "R&" lat "0000.00N" lon "00000.00E" comment "Rx-only iGate"
#beacon symbol "R&" $myloc comment "Rx-only iGate"
#
#Following are basic options:
# 'symbol' no default, must be defined!
# 'lat' coordinate latitude: ddmm.mmN (no default!)
# 'lon' coordinate longitude: dddmm.mmE (no default!)
# '$myloc' coordinate values taken from global 'myloc' entry,
# and usable in place of explicit 'lat'+'lon'.
# 'comment' optional tail part of the item, default is nothing
#
# Sample symbols:
# R& is for "Rx-only iGate"
# I& is for "Tx-iGate"
# /# is for "Digipeater"
# I# is for "Tx-iGate + Digipeater""
#
#Additional options are:
# 'srccall' parameter sets claimed origination address.
# 'dstcall' sets destination address, default "APRXnn"
# 'interface' parameter picks an interface (must be "tx-ok true" type)
# 'via' sets radio distribution pattern, default: none.
# 'timefix' On APRS messages with HMS timestamp (hour:min:sec), the
# system fixes appropriate field with transmit time timestamp.
#
# Message type is by default '!', which is positional no timestamp format.
# Other possible formats are definable with options:
# 'type' Single character setting type: ! = / @, default: !
# 'item' Defines a name of Item (')') type beacons.
# 'object' Defines a name of Object (';') type beacons.
#
# 'file' option tells a file at which a _raw_ APRS message content is
# expected to be found as first line of text. Line ending newline
# is removed, and no escapes are supported. The timefix is
# available, though probably should not be used.
# No \-processing is done on read text line.
#
# 'exec' option tells a computer program which returns to stdout _raw_ APRS
# message content without newline. The timefix is
# available, though probably should not be used.
# No \-processing is done on read text line.
#
# The parameter sets can vary:
# a) 'srccall nnn-n dstcall "string" symbol "R&" lat "ddmm.mmN" lon "dddmm.mmE" [comment "any text"]
# b) 'srccall nnn-n dstcall "string" symbol "R&" $myloc [comment "any text"]
# c) 'srccall nnn-n dstcall "string" raw "string"'
#
# The a) form flags on some of possible syntax errors in parameters.
# It will also create only "!" type messages. The dest parameter
# defaults to "APRS", but can be used to give other destinations.
# The via parameter can be used to add other keywords, like "NOGATE".
#
# Writing correct RAW format beacon message is very hard,
# which is evidenced by the frequency of bad syntax texts
# people so often put there... If you can not be persuaded
# not to do it, then at least VERIFY the beacon result on
# web service like findu.com, or aprs.fi
#
# Do remember that the \ -character has special treatment in the
# Aprx configuration parser. If you want a '\' on APRS content,
# then you encode it on configuration file as: '\\'
#
# Stranger combinations with explicite "transmit this to interface X":
#
#beacon file /tmp/wxbeacon.txt
#beacon interface N0CALL-3 srccall N0CALL-3 \
# raw "!0000.00NR00000.00E&Rx-only iGate"
#beacon interface N0CALL-3 srccall N0CALL-3 \
# raw "!0000.00NI00000.00E&Tx-iGate"
#beacon interface $mycall symbol "R&" $myloc \
# comment "Rx-only iGate"
#beacon interface $mycall symbol "I&" $myloc \
# comment "Tx-iGate"
#beacon exec /usr/bin/telemetry.pl
#beacon timeout 20 exec /usr/bin/telemetry.pl
#beacon interface N0CALL-3 srccall N0CALL-3 \
# timeout 20 exec /usr/bin/telemetry.pl
#
</beacon>
# *********** <telemetry> definition(s) follow *********
#
# The system will always send telemetry for all of its interfaces
# to APRSIS, but there is an option to define telemetry to be sent
# to radio channel by using following sections for each transmitter
# that is wanted to send out the telemetry.
#
# transmitter - callsign referring to <interface>
# via - optional via-path, only 1 callsign!
# source - one or more of <interface> callsigns for which
# the telemetry transmission is wanted for
#
#<telemetry>
# transmitter $mycall
# via TRACE1-1
# source $mycall
#</telemetry>
# *********** <digipeater> definition(s) follow *********
#
# The digipeater definitions tell transmitters that receive
# AX.25 packets from possibly multiple sources, and then what
# to do on the AX.25 headers of those messages.
#
# There is one transmitter per digipeater -- and inversely, there
# can be at most one digipeater for each transmitter.
#
# In each digipeater there is at least one <source>, usually same
# as the transmitter. You may use same <source> on multiple
# <digipeater>s. Using multiple instances of same <source> on
# a single <digipeater> does not crash the system, but it can cause
# packet duplication in case of non-APRS protocols (like AX.25 CONS)
#
# Use only at most two levels of viscous-delay in your <digipeater>.
# Immediate sending is by "0", and a delayed sending is any value
# from 1 to 9. This system does not correctly support other than
# immediate sending and one level of delay.
#
# Note: In order to igate correct when multiple receivers and
# transmitters are used on single channel, the <interface>
# definitions of each radio port must have associated
# "igate-group N" parameter which has N of value 1 to 3.
# See the aprx-manual.pdf for details.
# (Default software compilation allows you to have up to
# three channels of APRS operation.)
#
#<digipeater>
# transmitter $mycall
# #ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# #srcratelimit 10 20 # Example: by sourcecall:
# # average 10 packets/minute,
# # burst max 20 packets/minute
#
# <source>
# source $mycall
# # #relay-type digipeated # default mode is "digipeated"
# # viscous-delay 0 # no viscous delay for RF->RF digipeating
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# ## filter a/la/lo/la/lo # service area filter
# ## filter -b/CALL # always block these
# </source>
#
# # Diversity receiver which combines to the primary
# # Tx/Rx transmitter. There can be as many of these
# # as you can connect on this machine.
# #<source>
# # source RXPORT-1
# # #relay-type digipeated # default mode is "digipeated"
# # viscous-delay 0 # no viscous delay for RF->RF digipeating
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# ## filter a/la/lo/la/lo # service area filter
# ## filter -b/CALL # always block these
# </source>
#
# #<source> # APRSIS source adds a TX-IGATE behaviour
# # source APRSIS
# # relay-type third-party # Must define this for APRSIS source!
# # viscous-delay 5 # Recommendation: 5 seconds delay to give
# # # RF delivery time make itself known.
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# ## filter a/la/lo/la/lo # service area filter
# ## filter -b/CALL # always block these
# #</source>
#
# #<source> # DPRS source adds a DPRS->APRS RF gate
# # interface DPRS
# # ratelimit 60 120 # default: average 60 packets/minute,
# # # burst max 120 packets/minute
# # relay-type third-party # Must define this for DPRS source!
# #</source>
#</digipeater>

@ -0,0 +1,24 @@
## KISS Settings
# Where to listen?
# TCP_HOST can be "localhost", "0.0.0.0" or a specific interface address
# TCP_PORT as configured in aprx.conf <interface> section
TCP_HOST = "0.0.0.0"
TCP_PORT = 10001
## AXUDP Settings
# AXUDP_REMOTE_IP IP to wich udp packets are sent
# AXUDP_REMOTE_PORT UDP Port to wich udp packets are sent
# AXUDP_LOCAL_IP IP of Interface to listen on, 0.0.0.0 for all interfaces
# AXUDP_LOCAL_PORT Port to listen for incoming AXUDP packets
AXUDP_REMOTE_IP = "192.168.0.185"
AXUDP_REMOTE_PORT = 20000
AXUDP_LOCAL_IP = "0.0.0.0"
AXUDP_LOCAL_PORT = 20000
## Genral Settings
# USE_AXUDP Switch from KISS to AXUDP if True
# APPEND_SIGNAL_REPORT adds signal report to text of APRS-Message for debug purpose
# this will change the original message and could cause loops
USE_AXUDP = False
APPEND_SIGNAL_REPORT = False

@ -0,0 +1,54 @@
# Experimental multi-SF reception. Does not yet work.
# lora.set_mode(MODE.STDBY)
# lora.set_mode(MODE.CAD)
# f = lora.get_irq_flags()
# while True:
#
# for sf in [10, 11, 12]:
# #m = lora.get_mode() # important to keep pySX127x updated
# lora.set_mode(MODE.STDBY)
# lora.set_spreading_factor(sf)
# lora.set_mode(MODE.CAD)
# #time.sleep(0.001)
# while f["cad_done"] == 0:
# time.sleep(0.05)
# f = lora.get_irq_flags()
# #print(sf, MODE.lookup[lora.get_mode()], f)
# if f["cad_detected"]:
# print("DET SF %i" % sf)
# lora.set_mode(MODE.RXSINGLE)
# time.sleep(3)
# lora.clear_irq_flags(CadDone=1, CadDetected=1)
# f = lora.get_irq_flags()
# #print((lora.get_irq_flags()))
#
# import sys
# sys.exit(0)
# if f["cad_done"]:
# lora.clear_irq_flags(CadDone=1)
# if f["cad_detected"]:
# lora.clear_irq_flags(CadDetected=1)
# lora.set_mode(MODE.RXSINGLE)
# else:
# if mode == 1:
# lora.set_spreading_factor(SPREADINGFACTOR)
# lora.set_low_data_rate_optim(True)
# mode = 2
# else:
# lora.set_spreading_factor(10)
# lora.set_low_data_rate_optim(False)
# mode = 1
# lora.set_mode(MODE.CAD)
# elif f["rx_timeout"]:
# lora.clear_irq_flags(RxTimeout=1)
# lora.set_mode(MODE.CAD)
#
# if f["valid_header"]:
# lora.clear_irq_flags(ValidHeader=1)
# if lora.mode == MODE.RXCONT:
# lora.set_mode(MODE.CAD)
# time.sleep(0.001)

@ -0,0 +1,661 @@
GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
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# Overview
This is a python interface to the [Semtech SX1276/7/8/9](http://www.semtech.com/wireless-rf/rf-transceivers/)
long range, low power transceiver family.
The SX127x have both LoRa and FSK capabilities. Here the focus lies on the
LoRa spread spectrum modulation hence only the LoRa modem interface is implemented so far
(but see the [roadmap](#roadmap) below for future plans).
Spread spectrum modulation has a number of intriguing features:
* High interference immunity
* Up to 20dBm link budget advantage (for the SX1276/7/8/9)
* High Doppler shift immunity
More information about LoRa can be found on the [LoRa Alliance website](https://lora-alliance.org).
Links to some LoRa performance reports can be found in the [references](#references) section below.
# Motivation
Transceiver modules are usually interfaced with microcontroller boards such as the
Arduino and there are already many fine C/C++ libraries for the SX127x family available on
[github](https://github.com/search?q=sx127x) and [mbed.org](https://developer.mbed.org/search/?q=sx127x).
Although C/C++ is the de facto standard for development on microcontrollers, [python](https://www.python.org)
running on a Raspberry Pi (NanoPi, BananaPi, UDOO Neo, BeagleBoard, etc. etc.) is becoming a viable alternative for rapid prototyping.
High level programming languages like python require a full-blown OS such as Linux. (There are some exceptions like
[MicroPython](https://micropython.org) and its fork [CircuitPython](https://www.adafruit.com/circuitpython).)
But using hardware capable of running Linux contradicts, to some extent, the low power specification of the SX127x family.
Therefore it is clear that this approach aims mostly at prototyping and technology testing.
Prototyping on a full-blown OS using high level programming languages has several clear advantages:
* Working prototypes can be built quickly
* Technology testing ist faster
* Proof of concept is easier to achieve
* The application development phase is reached quicker
# Hardware
The transceiver module is a SX1276 based Modtronix [inAir9B](http://modtronix.com/inair9.html).
It is mounted on a prototyping board to a Raspberry Pi rev 2 model B.
| Proto board pin | RaspPi GPIO | Direction |
|:----------------|:-----------:|:---------:|
| inAir9B DIO0 | GPIO 22 | IN |
| inAir9B DIO1 | GPIO 23 | IN |
| inAir9B DIO2 | GPIO 24 | IN |
| inAir9B DIO3 | GPIO 25 | IN |
| inAir9b Reset | GPIO ? | OUT |
| LED | GPIO 18 | OUT |
| Switch | GPIO 4 | IN |
Todo:
- [ ] Add picture(s)
- [ ] Wire the SX127x reset to a GPIO?
# Code Examples
### Overview
First import the modules
```python
from SX127x.LoRa import *
from SX127x.board_config import BOARD
```
then set up the board GPIOs
```python
BOARD.setup()
```
The LoRa object is instantiated and put into the standby mode
```python
lora = LoRa()
lora.set_mode(MODE.STDBY)
```
Registers are queried like so:
```python
print lora.version() # this prints the sx127x chip version
print lora.get_freq() # this prints the frequency setting
```
and setting registers is easy, too
```python
lora.set_freq(433.0) # Set the frequency to 433 MHz
```
In applications the `LoRa` class should be subclassed while overriding one or more of the callback functions that
are invoked on successful RX or TX operations, for example.
```python
class MyLoRa(LoRa):
def __init__(self, verbose=False):
super(MyLoRa, self).__init__(verbose)
# setup registers etc.
def on_rx_done(self):
payload = self.read_payload(nocheck=True)
# etc.
```
In the end the resources should be freed properly
```python
BOARD.teardown()
```
### More details
Most functions of `SX127x.Lora` are setter and getter functions. For example, the setter and getter for
the coding rate are demonstrated here
```python
print lora.get_coding_rate() # print the current coding rate
lora.set_coding_rate(CODING_RATE.CR4_6) # set it to CR4_6
```
@todo
# Installation
Make sure SPI is activated on you RaspberryPi: [SPI](https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md)
**pySX127x** requires these two python packages:
* [RPi.GPIO](https://pypi.python.org/pypi/RPi.GPIO") for accessing the GPIOs, it should be already installed on
a standard Raspian Linux image
* [spidev](https://pypi.python.org/pypi/spidev) for controlling SPI
In order to install spidev download the source code and run setup.py manually:
```bash
wget https://pypi.python.org/packages/source/s/spidev/spidev-3.1.tar.gz
tar xfvz spidev-3.1.tar.gz
cd spidev-3.1
sudo python setup.py install
```
At this point you may want to confirm that the unit tests pass. See the section [Tests](#tests) below.
You can now run the scripts. For example dump the registers with `lora_util.py`:
```bash
rasp$ sudo ./lora_util.py
SX127x LoRa registers:
mode SLEEP
freq 434.000000 MHz
coding_rate CR4_5
bw BW125
spreading_factor 128 chips/symb
implicit_hdr_mode OFF
... and so on ....
```
# Class Reference
The interface to the SX127x LoRa modem is implemented in the class `SX127x.LoRa.LoRa`.
The most important modem configuration parameters are:
| Function | Description |
|------------------|---------------------------------------------|
| set_mode | Change OpMode, use the constants.MODE class |
| set_freq | Set the frequency |
| set_bw | Set the bandwidth 7.8kHz ... 500kHz |
| set_coding_rate | Set the coding rate 4/5, 4/6, 4/7, 4/8 |
| | |
| @todo | |
Most set_* functions have a mirror get_* function, but beware that the getter return types do not necessarily match
the setter input types.
### Register naming convention
The register addresses are defined in class `SX127x.constants.REG` and we use a specific naming convention which
is best illustrated by a few examples:
| Register | Modem | Semtech doc. | pySX127x |
|----------|-------|-------------------| ---------------------------|
| 0x0E | LoRa | RegFifoTxBaseAddr | REG.LORA.FIFO_TX_BASE_ADDR |
| 0x0E | FSK | RegRssiCOnfig | REG.FSK.RSSI_CONFIG |
| 0x1D | LoRa | RegModemConfig1 | REG.LORA.MODEM_CONFIG_1 |
| etc. | | | |
### Hardware
Hardware related definition and initialisation are located in `SX127x.board_config.BOARD`.
If you use a SBC other than the Raspberry Pi you'll have to adapt the BOARD class.
# Script references
### Continuous receiver `rx_cont.py`
The SX127x is put in RXCONT mode and continuously waits for transmissions. Upon a successful read the
payload and the irq flags are printed to screen.
```
usage: rx_cont.py [-h] [--ocp OCP] [--sf SF] [--freq FREQ] [--bw BW]
[--cr CODING_RATE] [--preamble PREAMBLE]
Continous LoRa receiver
optional arguments:
-h, --help show this help message and exit
--ocp OCP, -c OCP Over current protection in mA (45 .. 240 mA)
--sf SF, -s SF Spreading factor (6...12). Default is 7.
--freq FREQ, -f FREQ Frequency
--bw BW, -b BW Bandwidth (one of BW7_8 BW10_4 BW15_6 BW20_8 BW31_25
BW41_7 BW62_5 BW125 BW250 BW500). Default is BW125.
--cr CODING_RATE, -r CODING_RATE
Coding rate (one of CR4_5 CR4_6 CR4_7 CR4_8). Default
is CR4_5.
--preamble PREAMBLE, -p PREAMBLE
Preamble length. Default is 8.
```
### Simple LoRa beacon `tx_beacon.py`
A small payload is transmitted in regular intervals.
```
usage: tx_beacon.py [-h] [--ocp OCP] [--sf SF] [--freq FREQ] [--bw BW]
[--cr CODING_RATE] [--preamble PREAMBLE] [--single]
[--wait WAIT]
A simple LoRa beacon
optional arguments:
-h, --help show this help message and exit
--ocp OCP, -c OCP Over current protection in mA (45 .. 240 mA)
--sf SF, -s SF Spreading factor (6...12). Default is 7.
--freq FREQ, -f FREQ Frequency
--bw BW, -b BW Bandwidth (one of BW7_8 BW10_4 BW15_6 BW20_8 BW31_25
BW41_7 BW62_5 BW125 BW250 BW500). Default is BW125.
--cr CODING_RATE, -r CODING_RATE
Coding rate (one of CR4_5 CR4_6 CR4_7 CR4_8). Default
is CR4_5.
--preamble PREAMBLE, -p PREAMBLE
Preamble length. Default is 8.
--single, -S Single transmission
--wait WAIT, -w WAIT Waiting time between transmissions (default is 0s)
```
# Tests
Execute `test_lora.py` to run a few unit tests.
# Contributors
Please feel free to comment, report issues, or contribute!
Contact me via my company website [Mayer Analytics](http://mayeranalytics.com) and my private blog
[mcmayer.net](http://mcmayer.net).
Follow me on twitter [@markuscmayer](https://twitter.com/markuscmayer) and
[@mayeranalytics](https://twitter.com/mayeranalytics).
# Roadmap
95% of functions for the Sx127x LoRa capabilities are implemented. Functions will be added when necessary.
The test coverage is rather low but we intend to change that soon.
### Semtech SX1272/3 vs. SX1276/7/8/9
**pySX127x** is not entirely compatible with the 1272.
The 1276 and 1272 chips are different and the interfaces not 100% identical. For example registers 0x26/27.
But the pySX127x library should get you pretty far if you use it with care. Here are the two datasheets:
* [Semtech - SX1276/77/78/79 - 137 MHz to 1020 MHz Low Power Long Range Transceiver](http://www.semtech.com/images/datasheet/sx1276_77_78_79.pdf)
* [Semtech SX1272/73 - 860 MHz to 1020 MHz Low Power Long Range Transceiver](http://www.semtech.com/images/datasheet/sx1272.pdf)
### HopeRF transceiver ICs ###
HopeRF has a family of LoRa capable transceiver chips [RFM92/95/96/98](http://www.hoperf.com/)
that have identical or almost identical SPI interface as the Semtech SX1276/7/8/9 family.
### Microchip transceiver IC ###
Likewise Microchip has the chip [RN2483](http://ww1.microchip.com/downloads/en/DeviceDoc/50002346A.pdf)
The [pySX127x](https://github.com/mayeranalytics/pySX127x) project will therefore be renamed to pyLoRa at some point.
# LoRaWAN
LoRaWAN is a LPWAN (low power WAN) and, and **pySX127x** has almost no relationship with LoRaWAN. Here we only deal with the interface into the chip(s) that enable the physical layer of LoRaWAN networks. If you need a LoRaWAN implementation have a look at [Jeroennijhof](https://github.com/jeroennijhof)s [LoRaWAN](https://github.com/jeroennijhof/LoRaWAN) which is based on pySX127x.
By the way, LoRaWAN is what you need when you want to talk to the [TheThingsNetwork](https://www.thethingsnetwork.org/), a "global open LoRaWAN network". The site has a lot of information and links to products and projects.
# References
### Hardware references
* [Semtech SX1276/77/78/79 - 137 MHz to 1020 MHz Low Power Long Range Transceiver](http://www.semtech.com/images/datasheet/sx1276_77_78_79.pdf)
* [Modtronix inAir9](http://modtronix.com/inair9.html)
* [Spidev Documentation](http://tightdev.net/SpiDev_Doc.pdf)
* [Make: Tutorial: Raspberry Pi GPIO Pins and Python](http://makezine.com/projects/tutorial-raspberry-pi-gpio-pins-and-python/)
### LoRa performance tests
* [Extreme Range Links: LoRa 868 / 900MHz SX1272 LoRa module for Arduino, Raspberry Pi and Intel Galileo](https://www.cooking-hacks.com/documentation/tutorials/extreme-range-lora-sx1272-module-shield-arduino-raspberry-pi-intel-galileo/)
* [UK LoRa versus FSK - 40km LoS (Line of Sight) test!](http://www.instructables.com/id/Introducing-LoRa-/step17/Other-region-tests/)
* [Andreas Spiess LoRaWAN World Record Attempt](https://www.youtube.com/watch?v=adhWIo-7gr4)
### Spread spectrum modulation theory
* [An Introduction to Spread Spectrum Techniques](http://www.ausairpower.net/OSR-0597.html)
* [Theory of Spread-Spectrum Communications-A Tutorial](http://www.fer.unizg.hr/_download/repository/Theory%20of%20Spread-Spectrum%20Communications-A%20Tutorial.pdf)
(technical paper)
# Copyright and License
&copy; 2015 Mayer Analytics Ltd., All Rights Reserved.
### Short version
The license is [GNU AGPL](http://www.gnu.org/licenses/agpl-3.0.en.html).
### Long version
pySX127x is free software: you can redistribute it and/or modify it under the terms of the
GNU Affero General Public License as published by the Free Software Foundation,
either version 3 of the License, or (at your option) any later version.
pySX127x is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Affero General Public License for more details.
You can be released from the requirements of the license by obtaining a commercial license.
Such a license is mandatory as soon as you develop commercial activities involving
pySX127x without disclosing the source code of your own applications, or shipping pySX127x with a closed source product.
You should have received a copy of the GNU General Public License
along with pySX127. If not, see <http://www.gnu.org/licenses/>.
# Other legal boredom
LoRa, LoRaWAN, LoRa Alliance are all trademarks by ... someone.

@ -0,0 +1,951 @@
""" Defines the SX127x class and a few utility functions. """
# -*- coding: utf-8 -*-
# Copyright 2015-2018 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
import sys
from .constants import *
from .board_config import BOARD
################################################## Some utility functions ##############################################
def set_bit(value, index, new_bit):
""" Set the index'th bit of value to new_bit, and return the new value.
:param value: The integer to set the new_bit in
:type value: int
:param index: 0-based index
:param new_bit: New value the bit shall have (0 or 1)
:return: Changed value
:rtype: int
"""
mask = 1 << index
value &= ~mask
if new_bit:
value |= mask
return value
def getter(register_address):
""" The getter decorator reads the register content and calls the decorated function to do
post-processing.
:param register_address: Register address
:return: Register value
:rtype: int
"""
def decorator(func):
def wrapper(self):
return func(self, self.spi.xfer([register_address, 0])[1])
return wrapper
return decorator
def setter(register_address):
""" The setter decorator calls the decorated function for pre-processing and
then writes the result to the register
:param register_address: Register address
:return: New register value
:rtype: int
"""
def decorator(func):
def wrapper(self, val):
return self.spi.xfer([register_address | 0x80, func(self, val)])[1]
return wrapper
return decorator
############################################### Definition of the LoRa class ###########################################
class LoRa(object):
spi = BOARD.SpiDev() # init and get the baord's SPI
mode = None # the mode is backed up here
backup_registers = []
verbose = True
dio_mapping = [None] * 6 # store the dio mapping here
def __init__(self, verbose=True, do_calibration=True, calibration_freq=868):
""" Init the object
Send the device to sleep, read all registers, and do the calibration (if do_calibration=True)
:param verbose: Set the verbosity True/False
:param calibration_freq: call rx_chain_calibration with this parameter. Default is 868
:param do_calibration: Call rx_chain_calibration, default is True.
"""
self.verbose = verbose
# set the callbacks for DIO0..5 IRQs.
BOARD.add_events(self._dio0, self._dio1, self._dio2, self._dio3, self._dio4, self._dio5)
# set mode to sleep and read all registers
self.set_mode(MODE.SLEEP)
self.backup_registers = self.get_all_registers()
# more setup work:
if do_calibration:
self.rx_chain_calibration(calibration_freq)
# the FSK registers are set up exactly as modtronix do it:
lookup_fsk = [
#[REG.FSK.LNA , 0x23],
#[REG.FSK.RX_CONFIG , 0x1E],
#[REG.FSK.RSSI_CONFIG , 0xD2],
#[REG.FSK.PREAMBLE_DETECT, 0xAA],
#[REG.FSK.OSC , 0x07],
#[REG.FSK.SYNC_CONFIG , 0x12],
#[REG.FSK.SYNC_VALUE_1 , 0xC1],
#[REG.FSK.SYNC_VALUE_2 , 0x94],
#[REG.FSK.SYNC_VALUE_3 , 0xC1],
#[REG.FSK.PACKET_CONFIG_1, 0xD8],
#[REG.FSK.FIFO_THRESH , 0x8F],
#[REG.FSK.IMAGE_CAL , 0x02],
#[REG.FSK.DIO_MAPPING_1 , 0x00],
#[REG.FSK.DIO_MAPPING_2 , 0x30]
]
self.set_mode(MODE.FSK_STDBY)
for register_address, value in lookup_fsk:
self.set_register(register_address, value)
self.set_mode(MODE.SLEEP)
# set the dio_ mapping by calling the two get_dio_mapping_* functions
self.get_dio_mapping_1()
self.get_dio_mapping_2()
# Overridable functions:
def on_rx_done(self):
pass
def on_tx_done(self):
pass
def on_cad_done(self):
pass
def on_rx_timeout(self):
pass
def on_valid_header(self):
pass
def on_payload_crc_error(self):
pass
def on_fhss_change_channel(self):
pass
# Internal callbacks for add_events()
def _dio0(self, channel):
# DIO0 00: RxDone
# DIO0 01: TxDone
# DIO0 10: CadDone
if self.dio_mapping[0] == 0:
self.on_rx_done()
elif self.dio_mapping[0] == 1:
self.on_tx_done()
elif self.dio_mapping[0] == 2:
self.on_cad_done()
else:
raise RuntimeError("unknown dio0mapping!")
def _dio1(self, channel):
# DIO1 00: RxTimeout
# DIO1 01: FhssChangeChannel
# DIO1 10: CadDetected
if self.dio_mapping[1] == 0:
self.on_rx_timeout()
elif self.dio_mapping[1] == 1:
self.on_fhss_change_channel()
elif self.dio_mapping[1] == 2:
self.on_CadDetected()
else:
raise RuntimeError("unknown dio1mapping!")
def _dio2(self, channel):
# DIO2 00: FhssChangeChannel
# DIO2 01: FhssChangeChannel
# DIO2 10: FhssChangeChannel
self.on_fhss_change_channel()
def _dio3(self, channel):
# DIO3 00: CadDone
# DIO3 01: ValidHeader
# DIO3 10: PayloadCrcError
if self.dio_mapping[3] == 0:
self.on_cad_done()
elif self.dio_mapping[3] == 1:
self.on_valid_header()
elif self.dio_mapping[3] == 2:
self.on_payload_crc_error()
else:
raise RuntimeError("unknown dio3 mapping!")
def _dio4(self, channel):
raise RuntimeError("DIO4 is not used")
def _dio5(self, channel):
raise RuntimeError("DIO5 is not used")
# All the set/get/read/write functions
def get_mode(self):
""" Get the mode
:return: New mode
"""
self.mode = self.spi.xfer([REG.LORA.OP_MODE, 0])[1]
return self.mode
def set_mode(self, mode):
""" Set the mode
:param mode: Set the mode. Use constants.MODE class
:return: New mode
"""
# the mode is backed up in self.mode
if mode == self.mode:
return mode
if self.verbose:
sys.stderr.write("Mode <- %s\n" % MODE.lookup[mode])
self.mode = mode
return self.spi.xfer([REG.LORA.OP_MODE | 0x80, mode])[1]
def write_payload(self, payload):
""" Get FIFO ready for TX: Set FifoAddrPtr to FifoTxBaseAddr. The transceiver is put into STDBY mode.
:param payload: Payload to write (list)
:return: Written payload
"""
payload_size = len(payload)
self.set_payload_length(payload_size)
self.set_mode(MODE.STDBY)
base_addr = self.get_fifo_tx_base_addr()
self.set_fifo_addr_ptr(base_addr)
return self.spi.xfer([REG.LORA.FIFO | 0x80] + payload)[1:]
def reset_ptr_rx(self):
""" Get FIFO ready for RX: Set FifoAddrPtr to FifoRxBaseAddr. The transceiver is put into STDBY mode. """
self.set_mode(MODE.STDBY)
base_addr = self.get_fifo_rx_base_addr()
self.set_fifo_addr_ptr(base_addr)
def rx_is_good(self):
""" Check the IRQ flags for RX errors
:return: True if no errors
:rtype: bool
"""
flags = self.get_irq_flags()
return not any([flags[s] for s in ['valid_header', 'crc_error', 'rx_done', 'rx_timeout']])
def read_payload(self , nocheck = False):
""" Read the payload from FIFO
:param nocheck: If True then check rx_is_good()
:return: Payload
:rtype: list[int]
"""
if not nocheck and not self.rx_is_good():
return None
rx_nb_bytes = self.get_rx_nb_bytes()
fifo_rx_current_addr = self.get_fifo_rx_current_addr()
self.set_fifo_addr_ptr(fifo_rx_current_addr)
payload = self.spi.xfer([REG.LORA.FIFO] + [0] * rx_nb_bytes)[1:]
return payload
def get_freq(self):
""" Get the frequency (MHz)
:return: Frequency in MHz
:rtype: float
"""
msb, mid, lsb = self.spi.xfer([REG.LORA.FR_MSB, 0, 0, 0])[1:]
f = lsb + 256*(mid + 256*msb)
return f / 16384.
def set_freq(self, f):
""" Set the frequency (MHz)
:param f: Frequency in MHz
"type f: float
:return: New register settings (3 bytes [msb, mid, lsb])
:rtype: list[int]
"""
assert self.mode == MODE.SLEEP or self.mode == MODE.STDBY or self.mode == MODE.FSK_STDBY
i = int(f * 16384.) # choose floor
msb = i // 65536
i -= msb * 65536
mid = i // 256
i -= mid * 256
lsb = i
return self.spi.xfer([REG.LORA.FR_MSB | 0x80, msb, mid, lsb])
def get_pa_config(self, convert_dBm=False):
v = self.spi.xfer([REG.LORA.PA_CONFIG, 0])[1]
pa_select = v >> 7
max_power = v >> 4 & 0b111
output_power = v & 0b1111
if convert_dBm:
max_power = max_power * .6 + 10.8
output_power = max_power - (15 - output_power)
return dict(
pa_select = pa_select,
max_power = max_power,
output_power = output_power
)
def set_pa_config(self, pa_select=None, max_power=None, output_power=None):
""" Configure the PA
:param pa_select: Selects PA output pin, 0->RFO, 1->PA_BOOST
:param max_power: Select max output power Pmax=10.8+0.6*MaxPower
:param output_power: Output power Pout=Pmax-(15-OutputPower) if PaSelect = 0,
Pout=17-(15-OutputPower) if PaSelect = 1 (PA_BOOST pin)
:return: new register value
"""
loc = locals()
current = self.get_pa_config()
loc = {s: current[s] if loc[s] is None else loc[s] for s in loc}
val = (loc['pa_select'] << 7) | (loc['max_power'] << 4) | (loc['output_power'])
return self.spi.xfer([REG.LORA.PA_CONFIG | 0x80, val])[1]
@getter(REG.LORA.PA_RAMP)
def get_pa_ramp(self, val):
return val & 0b1111
@setter(REG.LORA.PA_RAMP)
def set_pa_ramp(self, val):
return val & 0b1111
def get_ocp(self, convert_mA=False):
v = self.spi.xfer([REG.LORA.OCP, 0])[1]
ocp_on = v >> 5 & 0x01
ocp_trim = v & 0b11111
if convert_mA:
if ocp_trim <= 15:
ocp_trim = 45. + 5. * ocp_trim
elif ocp_trim <= 27:
ocp_trim = -30. + 10. * ocp_trim
else:
assert ocp_trim <= 27
return dict(
ocp_on = ocp_on,
ocp_trim = ocp_trim
)
def set_ocp_trim(self, I_mA):
assert(I_mA >= 45 and I_mA <= 240)
ocp_on = self.spi.xfer([REG.LORA.OCP, 0])[1] >> 5 & 0x01
if I_mA <= 120:
v = int(round((I_mA-45.)/5.))
else:
v = int(round((I_mA+30.)/10.))
v = set_bit(v, 5, ocp_on)
return self.spi.xfer([REG.LORA.OCP | 0x80, v])[1]
def get_lna(self):
v = self.spi.xfer([REG.LORA.LNA, 0])[1]
return dict(
lna_gain = v >> 5,
lna_boost_lf = v >> 3 & 0b11,
lna_boost_hf = v & 0b11
)
def set_lna(self, lna_gain=None, lna_boost_lf=None, lna_boost_hf=None):
assert lna_boost_hf is None or lna_boost_hf == 0b00 or lna_boost_hf == 0b11
self.set_mode(MODE.STDBY)
if lna_gain is not None:
# Apparently agc_auto_on must be 0 in order to set lna_gain
self.set_agc_auto_on(lna_gain == GAIN.NOT_USED)
loc = locals()
current = self.get_lna()
loc = {s: current[s] if loc[s] is None else loc[s] for s in loc}
val = (loc['lna_gain'] << 5) | (loc['lna_boost_lf'] << 3) | (loc['lna_boost_hf'])
retval = self.spi.xfer([REG.LORA.LNA | 0x80, val])[1]
if lna_gain is not None:
# agc_auto_on must track lna_gain: GAIN=NOT_USED -> agc_auto=ON, otherwise =OFF
self.set_agc_auto_on(lna_gain == GAIN.NOT_USED)
return retval
def set_lna_gain(self, lna_gain):
self.set_lna(lna_gain=lna_gain)
def get_fifo_addr_ptr(self):
return self.spi.xfer([REG.LORA.FIFO_ADDR_PTR, 0])[1]
def set_fifo_addr_ptr(self, ptr):
return self.spi.xfer([REG.LORA.FIFO_ADDR_PTR | 0x80, ptr])[1]
def get_fifo_tx_base_addr(self):
return self.spi.xfer([REG.LORA.FIFO_TX_BASE_ADDR, 0])[1]
def set_fifo_tx_base_addr(self, ptr):
return self.spi.xfer([REG.LORA.FIFO_TX_BASE_ADDR | 0x80, ptr])[1]
def get_fifo_rx_base_addr(self):
return self.spi.xfer([REG.LORA.FIFO_RX_BASE_ADDR, 0])[1]
def set_fifo_rx_base_addr(self, ptr):
return self.spi.xfer([REG.LORA.FIFO_RX_BASE_ADDR | 0x80, ptr])[1]
def get_fifo_rx_current_addr(self):
return self.spi.xfer([REG.LORA.FIFO_RX_CURR_ADDR, 0])[1]
def get_fifo_rx_byte_addr(self):
return self.spi.xfer([REG.LORA.FIFO_RX_BYTE_ADDR, 0])[1]
def get_irq_flags_mask(self):
v = self.spi.xfer([REG.LORA.IRQ_FLAGS_MASK, 0])[1]
return dict(
rx_timeout = v >> 7 & 0x01,
rx_done = v >> 6 & 0x01,
crc_error = v >> 5 & 0x01,
valid_header = v >> 4 & 0x01,
tx_done = v >> 3 & 0x01,
cad_done = v >> 2 & 0x01,
fhss_change_ch = v >> 1 & 0x01,
cad_detected = v >> 0 & 0x01,
)
def set_irq_flags_mask(self,
rx_timeout=None, rx_done=None, crc_error=None, valid_header=None, tx_done=None,
cad_done=None, fhss_change_ch=None, cad_detected=None):
loc = locals()
v = self.spi.xfer([REG.LORA.IRQ_FLAGS_MASK, 0])[1]
for i, s in enumerate(['cad_detected', 'fhss_change_ch', 'cad_done', 'tx_done', 'valid_header',
'crc_error', 'rx_done', 'rx_timeout']):
this_bit = locals()[s]
if this_bit is not None:
v = set_bit(v, i, this_bit)
return self.spi.xfer([REG.LORA.IRQ_FLAGS_MASK | 0x80, v])[1]
def get_irq_flags(self):
v = self.spi.xfer([REG.LORA.IRQ_FLAGS, 0])[1]
return dict(
rx_timeout = v >> 7 & 0x01,
rx_done = v >> 6 & 0x01,
crc_error = v >> 5 & 0x01,
valid_header = v >> 4 & 0x01,
tx_done = v >> 3 & 0x01,
cad_done = v >> 2 & 0x01,
fhss_change_ch = v >> 1 & 0x01,
cad_detected = v >> 0 & 0x01,
)
def set_irq_flags(self,
rx_timeout=None, rx_done=None, crc_error=None, valid_header=None, tx_done=None,
cad_done=None, fhss_change_ch=None, cad_detected=None):
v = self.spi.xfer([REG.LORA.IRQ_FLAGS, 0])[1]
for i, s in enumerate(['cad_detected', 'fhss_change_ch', 'cad_done', 'tx_done', 'valid_header',
'crc_error', 'rx_done', 'rx_timeout']):
this_bit = locals()[s]
if this_bit is not None:
v = set_bit(v, i, this_bit)
return self.spi.xfer([REG.LORA.IRQ_FLAGS | 0x80, v])[1]
def clear_irq_flags(self,
RxTimeout=None, RxDone=None, PayloadCrcError=None,
ValidHeader=None, TxDone=None, CadDone=None,
FhssChangeChannel=None, CadDetected=None):
v = 0
for i, s in enumerate(['CadDetected', 'FhssChangeChannel', 'CadDone',
'TxDone', 'ValidHeader', 'PayloadCrcError',
'RxDone', 'RxTimeout']):
this_bit = locals()[s]
if this_bit is not None:
v = set_bit(v, eval('MASK.IRQ_FLAGS.' + s), this_bit)
return self.spi.xfer([REG.LORA.IRQ_FLAGS | 0x80, v])[1]
def get_rx_nb_bytes(self):
return self.spi.xfer([REG.LORA.RX_NB_BYTES, 0])[1]
def get_rx_header_cnt(self):
msb, lsb = self.spi.xfer([REG.LORA.RX_HEADER_CNT_MSB, 0, 0])[1:]
return lsb + 256 * msb
def get_rx_packet_cnt(self):
msb, lsb = self.spi.xfer([REG.LORA.RX_PACKET_CNT_MSB, 0, 0])[1:]
return lsb + 256 * msb
def get_modem_status(self):
status = self.spi.xfer([REG.LORA.MODEM_STAT, 0])[1]
return dict(
rx_coding_rate = status >> 5 & 0x03,
modem_clear = status >> 4 & 0x01,
header_info_valid = status >> 3 & 0x01,
rx_ongoing = status >> 2 & 0x01,
signal_sync = status >> 1 & 0x01,
signal_detected = status >> 0 & 0x01
)
def get_pkt_snr_value(self):
v = self.spi.xfer([REG.LORA.PKT_SNR_VALUE, 0])[1]
return (float(v-256) if v > 127 else float(v)) / 4.
def get_pkt_rssi_value(self):
v = self.spi.xfer([REG.LORA.PKT_RSSI_VALUE, 0])[1]
return v - (164 if BOARD.low_band else 157) # See datasheet 5.5.5. p. 87
def get_rssi_value(self):
v = self.spi.xfer([REG.LORA.RSSI_VALUE, 0])[1]
return v - (164 if BOARD.low_band else 157) # See datasheet 5.5.5. p. 87
def get_hop_channel(self):
v = self.spi.xfer([REG.LORA.HOP_CHANNEL, 0])[1]
return dict(
pll_timeout = v >> 7,
crc_on_payload = v >> 6 & 0x01,
fhss_present_channel = v >> 5 & 0b111111
)
def get_modem_config_1(self):
val = self.spi.xfer([REG.LORA.MODEM_CONFIG_1, 0])[1]
return dict(
bw = val >> 4 & 0x0F,
coding_rate = val >> 1 & 0x07,
implicit_header_mode = val & 0x01
)
def set_modem_config_1(self, bw=None, coding_rate=None, implicit_header_mode=None):
loc = locals()
current = self.get_modem_config_1()
loc = {s: current[s] if loc[s] is None else loc[s] for s in loc}
val = loc['implicit_header_mode'] | (loc['coding_rate'] << 1) | (loc['bw'] << 4)
return self.spi.xfer([REG.LORA.MODEM_CONFIG_1 | 0x80, val])[1]
def set_bw(self, bw):
""" Set the bandwidth 0=7.8kHz ... 9=500kHz
:param bw: A number 0,2,3,...,9
:return:
"""
self.set_modem_config_1(bw=bw)
def set_coding_rate(self, coding_rate):
""" Set the coding rate 4/5, 4/6, 4/7, 4/8
:param coding_rate: A number 1,2,3,4
:return: New register value
"""
self.set_modem_config_1(coding_rate=coding_rate)
def set_implicit_header_mode(self, implicit_header_mode):
self.set_modem_config_1(implicit_header_mode=implicit_header_mode)
def get_modem_config_2(self, include_symb_timout_lsb=False):
val = self.spi.xfer([REG.LORA.MODEM_CONFIG_2, 0])[1]
d = dict(
spreading_factor = val >> 4 & 0x0F,
tx_cont_mode = val >> 3 & 0x01,
rx_crc = val >> 2 & 0x01,
)
if include_symb_timout_lsb:
d['symb_timout_lsb'] = val & 0x03
return d
def set_modem_config_2(self, spreading_factor=None, tx_cont_mode=None, rx_crc=None):
loc = locals()
# RegModemConfig2 contains the SymbTimout MSB bits. We tack the back on when writing this register.
current = self.get_modem_config_2(include_symb_timout_lsb=True)
loc = {s: current[s] if loc[s] is None else loc[s] for s in loc}
val = (loc['spreading_factor'] << 4) | (loc['tx_cont_mode'] << 3) | (loc['rx_crc'] << 2) | current['symb_timout_lsb']
return self.spi.xfer([REG.LORA.MODEM_CONFIG_2 | 0x80, val])[1]
def set_spreading_factor(self, spreading_factor):
self.set_modem_config_2(spreading_factor=spreading_factor)
def set_rx_crc(self, rx_crc):
self.set_modem_config_2(rx_crc=rx_crc)
def get_modem_config_3(self):
val = self.spi.xfer([REG.LORA.MODEM_CONFIG_3, 0])[1]
return dict(
low_data_rate_optim = val >> 3 & 0x01,
agc_auto_on = val >> 2 & 0x01
)
def set_modem_config_3(self, low_data_rate_optim=None, agc_auto_on=None):
loc = locals()
current = self.get_modem_config_3()
loc = {s: current[s] if loc[s] is None else loc[s] for s in loc}
val = (loc['low_data_rate_optim'] << 3) | (loc['agc_auto_on'] << 2)
return self.spi.xfer([REG.LORA.MODEM_CONFIG_3 | 0x80, val])[1]
@setter(REG.LORA.INVERT_IQ)
def set_invert_iq(self, invert):
""" Invert the LoRa I and Q signals
:param invert: 0: normal mode, 1: I and Q inverted
:return: New value of register
"""
return 0x27 | (invert & 0x01) << 6
@getter(REG.LORA.INVERT_IQ)
def get_invert_iq(self, val):
""" Get the invert the I and Q setting
:return: 0: normal mode, 1: I and Q inverted
"""
return (val >> 6) & 0x01
def get_agc_auto_on(self):
return self.get_modem_config_3()['agc_auto_on']
def set_agc_auto_on(self, agc_auto_on):
self.set_modem_config_3(agc_auto_on=agc_auto_on)
def get_low_data_rate_optim(self):
return self.set_modem_config_3()['low_data_rate_optim']
def set_low_data_rate_optim(self, low_data_rate_optim):
self.set_modem_config_3(low_data_rate_optim=low_data_rate_optim)
def get_symb_timeout(self):
SYMB_TIMEOUT_MSB = REG.LORA.MODEM_CONFIG_2
msb, lsb = self.spi.xfer([SYMB_TIMEOUT_MSB, 0, 0])[1:] # the MSB bits are stored in REG.LORA.MODEM_CONFIG_2
msb = msb & 0b11
return lsb + 256 * msb
def set_symb_timeout(self, timeout):
bkup_reg_modem_config_2 = self.spi.xfer([REG.LORA.MODEM_CONFIG_2, 0])[1]
msb = timeout >> 8 & 0b11 # bits 8-9
lsb = timeout - 256 * msb # bits 0-7
reg_modem_config_2 = bkup_reg_modem_config_2 & 0xFC | msb # bits 2-7 of bkup_reg_modem_config_2 ORed with the two msb bits
old_msb = self.spi.xfer([REG.LORA.MODEM_CONFIG_2 | 0x80, reg_modem_config_2])[1] & 0x03
old_lsb = self.spi.xfer([REG.LORA.SYMB_TIMEOUT_LSB | 0x80, lsb])[1]
return old_lsb + 256 * old_msb
def get_preamble(self):
msb, lsb = self.spi.xfer([REG.LORA.PREAMBLE_MSB, 0, 0])[1:]
return lsb + 256 * msb
def set_preamble(self, preamble):
msb = preamble >> 8
lsb = preamble - msb * 256
old_msb, old_lsb = self.spi.xfer([REG.LORA.PREAMBLE_MSB | 0x80, msb, lsb])[1:]
return old_lsb + 256 * old_msb
@getter(REG.LORA.PAYLOAD_LENGTH)
def get_payload_length(self, val):
return val
@setter(REG.LORA.PAYLOAD_LENGTH)
def set_payload_length(self, payload_length):
return payload_length
@getter(REG.LORA.MAX_PAYLOAD_LENGTH)
def get_max_payload_length(self, val):
return val
@setter(REG.LORA.MAX_PAYLOAD_LENGTH)
def set_max_payload_length(self, max_payload_length):
return max_payload_length
@getter(REG.LORA.HOP_PERIOD)
def get_hop_period(self, val):
return val
@setter(REG.LORA.HOP_PERIOD)
def set_hop_period(self, hop_period):
return hop_period
def get_fei(self):
msb, mid, lsb = self.spi.xfer([REG.LORA.FEI_MSB, 0, 0, 0])[1:]
msb &= 0x0F
freq_error = lsb + 256 * (mid + 256 * msb)
return freq_error
@getter(REG.LORA.DETECT_OPTIMIZE)
def get_detect_optimize(self, val):
""" Get LoRa detection optimize setting
:return: detection optimize setting 0x03: SF7-12, 0x05: SF6
"""
return val & 0b111
@setter(REG.LORA.DETECT_OPTIMIZE)
def set_detect_optimize(self, detect_optimize):
""" Set LoRa detection optimize
:param detect_optimize 0x03: SF7-12, 0x05: SF6
:return: New register value
"""
assert detect_optimize == 0x03 or detect_optimize == 0x05
return detect_optimize & 0b111
@getter(REG.LORA.DETECTION_THRESH)
def get_detection_threshold(self, val):
""" Get LoRa detection threshold setting
:return: detection threshold 0x0A: SF7-12, 0x0C: SF6
"""
return val
@setter(REG.LORA.DETECTION_THRESH)
def set_detection_threshold(self, detect_threshold):
""" Set LoRa detection optimize
:param detect_threshold 0x0A: SF7-12, 0x0C: SF6
:return: New register value
"""
assert detect_threshold == 0x0A or detect_threshold == 0x0C
return detect_threshold
@getter(REG.LORA.SYNC_WORD)
def get_sync_word(self, sync_word):
return sync_word
@setter(REG.LORA.SYNC_WORD)
def set_sync_word(self, sync_word):
return sync_word
@getter(REG.LORA.DIO_MAPPING_1)
def get_dio_mapping_1(self, mapping):
""" Get mapping of pins DIO0 to DIO3. Object variable dio_mapping will be set.
:param mapping: Register value
:type mapping: int
:return: Value of the mapping list
:rtype: list[int]
"""
self.dio_mapping = [mapping>>6 & 0x03, mapping>>4 & 0x03, mapping>>2 & 0x03, mapping>>0 & 0x03] \
+ self.dio_mapping[4:6]
return self.dio_mapping
@setter(REG.LORA.DIO_MAPPING_1)
def set_dio_mapping_1(self, mapping):
""" Set mapping of pins DIO0 to DIO3. Object variable dio_mapping will be set.
:param mapping: Register value
:type mapping: int
:return: New value of the register
:rtype: int
"""
self.dio_mapping = [mapping>>6 & 0x03, mapping>>4 & 0x03, mapping>>2 & 0x03, mapping>>0 & 0x03] \
+ self.dio_mapping[4:6]
return mapping
@getter(REG.LORA.DIO_MAPPING_2)
def get_dio_mapping_2(self, mapping):
""" Get mapping of pins DIO4 to DIO5. Object variable dio_mapping will be set.
:param mapping: Register value
:type mapping: int
:return: Value of the mapping list
:rtype: list[int]
"""
self.dio_mapping = self.dio_mapping[0:4] + [mapping>>6 & 0x03, mapping>>4 & 0x03]
return self.dio_mapping
@setter(REG.LORA.DIO_MAPPING_2)
def set_dio_mapping_2(self, mapping):
""" Set mapping of pins DIO4 to DIO5. Object variable dio_mapping will be set.
:param mapping: Register value
:type mapping: int
:return: New value of the register
:rtype: int
"""
assert mapping & 0b00001110 == 0
self.dio_mapping = self.dio_mapping[0:4] + [mapping>>6 & 0x03, mapping>>4 & 0x03]
return mapping
def get_dio_mapping(self):
""" Utility function that returns the list of current DIO mappings. Object variable dio_mapping will be set.
:return: List of current DIO mappings
:rtype: list[int]
"""
self.get_dio_mapping_1()
return self.get_dio_mapping_2()
def set_dio_mapping(self, mapping):
""" Utility function that returns the list of current DIO mappings. Object variable dio_mapping will be set.
:param mapping: DIO mapping list
:type mapping: list[int]
:return: New DIO mapping list
:rtype: list[int]
"""
mapping_1 = (mapping[0] & 0x03) << 6 | (mapping[1] & 0x03) << 4 | (mapping[2] & 0x3) << 2 | mapping[3] & 0x3
mapping_2 = (mapping[4] & 0x03) << 6 | (mapping[5] & 0x03) << 4
self.set_dio_mapping_1(mapping_1)
return self.set_dio_mapping_2(mapping_2)
@getter(REG.LORA.VERSION)
def get_version(self, version):
""" Version code of the chip.
Bits 7-4 give the full revision number; bits 3-0 give the metal mask revision number.
:return: Version code
:rtype: int
"""
return version
@getter(REG.LORA.TCXO)
def get_tcxo(self, tcxo):
""" Get TCXO or XTAL input setting
0 -> "XTAL": Crystal Oscillator with external Crystal
1 -> "TCXO": External clipped sine TCXO AC-connected to XTA pin
:param tcxo: 1=TCXO or 0=XTAL input setting
:return: TCXO or XTAL input setting
:type: int (0 or 1)
"""
return tcxo & 0b00010000
@setter(REG.LORA.TCXO)
def set_tcxo(self, tcxo):
""" Make TCXO or XTAL input setting.
0 -> "XTAL": Crystal Oscillator with external Crystal
1 -> "TCXO": External clipped sine TCXO AC-connected to XTA pin
:param tcxo: 1=TCXO or 0=XTAL input setting
:return: new TCXO or XTAL input setting
"""
return (tcxo >= 1) << 4 | 0x09 # bits 0-3 must be 0b1001
@getter(REG.LORA.PA_DAC)
def get_pa_dac(self, pa_dac):
""" Enables the +20dBm option on PA_BOOST pin
False -> Default value
True -> +20dBm on PA_BOOST when OutputPower=1111
:return: True/False if +20dBm option on PA_BOOST on/off
:rtype: bool
"""
pa_dac &= 0x07 # only bits 0-2
if pa_dac == 0x04:
return False
elif pa_dac == 0x07:
return True
else:
raise RuntimeError("Bad PA_DAC value %s" % hex(pa_dac))
@setter(REG.LORA.PA_DAC)
def set_pa_dac(self, pa_dac):
""" Enables the +20dBm option on PA_BOOST pin
False -> Default value
True -> +20dBm on PA_BOOST when OutputPower=1111
:param pa_dac: 1/0 if +20dBm option on PA_BOOST on/off
:return: New pa_dac register value
:rtype: int
"""
return 0x87 if pa_dac else 0x84
def rx_chain_calibration(self, freq=868.):
""" Run the image calibration (see Semtech documentation section 4.2.3.8)
:param freq: Frequency for the HF calibration
:return: None
"""
# backup some registers
op_mode_bkup = self.get_mode()
pa_config_bkup = self.get_register(REG.LORA.PA_CONFIG)
freq_bkup = self.get_freq()
# for image calibration device must be in FSK standby mode
self.set_mode(MODE.FSK_STDBY)
# cut the PA
self.set_register(REG.LORA.PA_CONFIG, 0x00)
# calibration for the LF band
image_cal = (self.get_register(REG.FSK.IMAGE_CAL) & 0xBF) | 0x40
self.set_register(REG.FSK.IMAGE_CAL, image_cal)
while (self.get_register(REG.FSK.IMAGE_CAL) & 0x20) == 0x20:
pass
# Set a Frequency in HF band
self.set_freq(freq)
# calibration for the HF band
image_cal = (self.get_register(REG.FSK.IMAGE_CAL) & 0xBF) | 0x40
self.set_register(REG.FSK.IMAGE_CAL, image_cal)
while (self.get_register(REG.FSK.IMAGE_CAL) & 0x20) == 0x20:
pass
# put back the saved parameters
self.set_mode(op_mode_bkup)
self.set_register(REG.LORA.PA_CONFIG, pa_config_bkup)
self.set_freq(freq_bkup)
def dump_registers(self):
""" Returns a list of [reg_addr, reg_name, reg_value] tuples. Chip is put into mode SLEEP.
:return: List of [reg_addr, reg_name, reg_value] tuples
:rtype: list[tuple]
"""
self.set_mode(MODE.SLEEP)
values = self.get_all_registers()
skip_set = set([REG.LORA.FIFO])
result_list = []
for i, s in REG.LORA.lookup.iteritems():
if i in skip_set:
continue
v = values[i]
result_list.append((i, s, v))
return result_list
def get_register(self, register_address):
return self.spi.xfer([register_address & 0x7F, 0])[1]
def set_register(self, register_address, val):
return self.spi.xfer([register_address | 0x80, val])[1]
def get_all_registers(self):
# read all registers
reg = [0] + self.spi.xfer([1]+[0]*0x3E)[1:]
self.mode = reg[1]
return reg
def __del__(self):
self.set_mode(MODE.SLEEP)
if self.verbose:
sys.stderr.write("MODE=SLEEP\n")
def __str__(self):
# don't use __str__ while in any mode other that SLEEP or STDBY
assert(self.mode == MODE.SLEEP or self.mode == MODE.STDBY)
onoff = lambda i: 'ON' if i else 'OFF'
f = self.get_freq()
cfg1 = self.get_modem_config_1()
cfg2 = self.get_modem_config_2()
cfg3 = self.get_modem_config_3()
pa_config = self.get_pa_config(convert_dBm=True)
ocp = self.get_ocp(convert_mA=True)
lna = self.get_lna()
s = "SX127x LoRa registers:\n"
s += " mode %s\n" % MODE.lookup[self.get_mode()]
s += " freq %f MHz\n" % f
s += " coding_rate %s\n" % CODING_RATE.lookup[cfg1['coding_rate']]
s += " bw %s\n" % BW.lookup[cfg1['bw']]
s += " spreading_factor %s chips/symb\n" % (1 << cfg2['spreading_factor'])
s += " implicit_hdr_mode %s\n" % onoff(cfg1['implicit_header_mode'])
s += " rx_payload_crc %s\n" % onoff(cfg2['rx_crc'])
s += " tx_cont_mode %s\n" % onoff(cfg2['tx_cont_mode'])
s += " preamble %d\n" % self.get_preamble()
s += " low_data_rate_opti %s\n" % onoff(cfg3['low_data_rate_optim'])
s += " agc_auto_on %s\n" % onoff(cfg3['agc_auto_on'])
s += " symb_timeout %s\n" % self.get_symb_timeout()
s += " freq_hop_period %s\n" % self.get_hop_period()
s += " hop_channel %s\n" % self.get_hop_channel()
s += " payload_length %s\n" % self.get_payload_length()
s += " max_payload_length %s\n" % self.get_max_payload_length()
s += " irq_flags_mask %s\n" % self.get_irq_flags_mask()
s += " irq_flags %s\n" % self.get_irq_flags()
s += " rx_nb_byte %d\n" % self.get_rx_nb_bytes()
s += " rx_header_cnt %d\n" % self.get_rx_header_cnt()
s += " rx_packet_cnt %d\n" % self.get_rx_packet_cnt()
s += " pkt_snr_value %f\n" % self.get_pkt_snr_value()
s += " pkt_rssi_value %d\n" % self.get_pkt_rssi_value()
s += " rssi_value %d\n" % self.get_rssi_value()
s += " fei %d\n" % self.get_fei()
s += " pa_select %s\n" % PA_SELECT.lookup[pa_config['pa_select']]
s += " max_power %f dBm\n" % pa_config['max_power']
s += " output_power %f dBm\n" % pa_config['output_power']
s += " ocp %s\n" % onoff(ocp['ocp_on'])
s += " ocp_trim %f mA\n" % ocp['ocp_trim']
s += " lna_gain %s\n" % GAIN.lookup[lna['lna_gain']]
s += " lna_boost_lf %s\n" % bin(lna['lna_boost_lf'])
s += " lna_boost_hf %s\n" % bin(lna['lna_boost_hf'])
s += " detect_optimize %#02x\n" % self.get_detect_optimize()
s += " detection_thresh %#02x\n" % self.get_detection_threshold()
s += " sync_word %#02x\n" % self.get_sync_word()
s += " dio_mapping 0..5 %s\n" % self.get_dio_mapping()
s += " tcxo %s\n" % ['XTAL', 'TCXO'][self.get_tcxo()]
s += " pa_dac %s\n" % ['default', 'PA_BOOST'][self.get_pa_dac()]
s += " fifo_addr_ptr %#02x\n" % self.get_fifo_addr_ptr()
s += " fifo_tx_base_addr %#02x\n" % self.get_fifo_tx_base_addr()
s += " fifo_rx_base_addr %#02x\n" % self.get_fifo_rx_base_addr()
s += " fifo_rx_curr_addr %#02x\n" % self.get_fifo_rx_current_addr()
s += " fifo_rx_byte_addr %#02x\n" % self.get_fifo_rx_byte_addr()
s += " status %s\n" % self.get_modem_status()
s += " version %#02x\n" % self.get_version()
return s

@ -0,0 +1,76 @@
""" Defines LoRaArgumentParser which extends argparse.ArgumentParser with standard config parameters for the SX127x. """
# -*- coding: utf-8 -*-
# Copyright 2018 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
import argparse
class LoRaArgumentParser(argparse.ArgumentParser):
""" This class extends argparse.ArgumentParser.
Some commonly used LoRa config parameters are defined
* ocp
* spreading factor
* frequency
* bandwidth
* preamble
Call the parse_args with an additional parameter referencing a LoRa object. The args will be used to configure
the LoRa.
"""
bw_lookup = dict(BW7_8=0, BW10_4=1, BW15_6=2, BW20_8=3, BW31_25=4, BW41_7=5, BW62_5=6, BW125=7, BW250=8, BW500=9)
cr_lookup = dict(CR4_5=1, CR4_6=2,CR4_7=3,CR4_8=4)
def __init__(self, description):
argparse.ArgumentParser.__init__(self, description=description)
self.add_argument('--ocp', '-c', dest='ocp', default=100, action="store", type=float,
help="Over current protection in mA (45 .. 240 mA)")
self.add_argument('--sf', '-s', dest='sf', default=7, action="store", type=int,
help="Spreading factor (6...12). Default is 7.")
self.add_argument('--freq', '-f', dest='freq', default=869., action="store", type=float,
help="Frequency")
self.add_argument('--bw', '-b', dest='bw', default='BW125', action="store", type=str,
help="Bandwidth (one of BW7_8 BW10_4 BW15_6 BW20_8 BW31_25 BW41_7 BW62_5 BW125 BW250 BW500).\nDefault is BW125.")
self.add_argument('--cr', '-r', dest='coding_rate', default='CR4_5', action="store", type=str,
help="Coding rate (one of CR4_5 CR4_6 CR4_7 CR4_8).\nDefault is CR4_5.")
self.add_argument('--preamble', '-p', dest='preamble', default=8, action="store", type=int,
help="Preamble length. Default is 8.")
def parse_args(self, lora):
""" Parse the args, perform some sanity checks and configure the LoRa accordingly.
:param lora: Reference to LoRa object
:return: args
"""
args = argparse.ArgumentParser.parse_args(self)
args.bw = self.bw_lookup.get(args.bw, None)
args.coding_rate = self.cr_lookup.get(args.coding_rate, None)
# some sanity checks
assert(args.bw is not None)
assert(args.coding_rate is not None)
assert(args.sf >=6 and args.sf <= 12)
# set the LoRa object
lora.set_freq(args.freq)
lora.set_preamble(args.preamble)
lora.set_spreading_factor(args.sf)
lora.set_bw(args.bw)
lora.set_coding_rate(args.coding_rate)
lora.set_ocp_trim(args.ocp)
return args

@ -0,0 +1 @@
__all__ = ['SX127x']

@ -0,0 +1,135 @@
""" Defines the BOARD class that contains the board pin mappings and RF module HF/LF info. """
# -*- coding: utf-8 -*-
# Copyright 2015-2018 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
import RPi.GPIO as GPIO
import spidev
import time
class BOARD:
""" Board initialisation/teardown and pin configuration is kept here.
Also, information about the RF module is kept here.
This is the Raspberry Pi board with one LED and a modtronix inAir9B.
"""
# Note that the BCOM numbering for the GPIOs is used.
DIO0 = 5 # RaspPi GPIO 5
DIO1 = 23 # RaspPi GPIO 23
DIO2 = 24 # RaspPi GPIO 24
DIO3 = 25 # RaspPi GPIO 25
LED = 13 # RaspPi GPIO 18 connects to the LED on the proto shield
# Made it GPIO 13, as pin 18 is in use by Direwolf (M. Konstapel 2022-01-27)
SWITCH = 4 # RaspPi GPIO 4 connects to a switch
# The spi object is kept here
spi = None
# tell pySX127x here whether the attached RF module uses low-band (RF*_LF pins) or high-band (RF*_HF pins).
# low band (called band 1&2) are 137-175 and 410-525
# high band (called band 3) is 862-1020
low_band = True
@staticmethod
def setup():
""" Configure the Raspberry GPIOs
:rtype : None
"""
GPIO.setmode(GPIO.BCM)
# LED
GPIO.setup(BOARD.LED, GPIO.OUT)
GPIO.output(BOARD.LED, 0)
# switch
GPIO.setup(BOARD.SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
# DIOx
for gpio_pin in [BOARD.DIO0, BOARD.DIO1, BOARD.DIO2, BOARD.DIO3]:
GPIO.setup(gpio_pin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
# blink 2 times to signal the board is set up
BOARD.blink(.1, 2)
@staticmethod
def teardown():
""" Cleanup GPIO and SpiDev """
GPIO.cleanup()
BOARD.spi.close()
@staticmethod
def SpiDev(spi_bus=0, spi_cs=0):
""" Init and return the SpiDev object
:return: SpiDev object
:param spi_bus: The RPi SPI bus to use: 0 or 1
:param spi_cs: The RPi SPI chip select to use: 0 or 1
:rtype: SpiDev
"""
BOARD.spi = spidev.SpiDev()
BOARD.spi.open(spi_bus, spi_cs)
BOARD.spi.max_speed_hz = 5000000 # SX127x can go up to 10MHz, pick half that to be safe
return BOARD.spi
@staticmethod
def add_event_detect(dio_number, callback):
""" Wraps around the GPIO.add_event_detect function
:param dio_number: DIO pin 0...5
:param callback: The function to call when the DIO triggers an IRQ.
:return: None
"""
GPIO.add_event_detect(dio_number, GPIO.RISING, callback=callback)
@staticmethod
def add_events(cb_dio0, cb_dio1, cb_dio2, cb_dio3, cb_dio4, cb_dio5, switch_cb=None):
BOARD.add_event_detect(BOARD.DIO0, callback=cb_dio0)
BOARD.add_event_detect(BOARD.DIO1, callback=cb_dio1)
BOARD.add_event_detect(BOARD.DIO2, callback=cb_dio2)
BOARD.add_event_detect(BOARD.DIO3, callback=cb_dio3)
# the modtronix inAir9B does not expose DIO4 and DIO5
if switch_cb is not None:
GPIO.add_event_detect(BOARD.SWITCH, GPIO.RISING, callback=switch_cb, bouncetime=300)
@staticmethod
def led_on(value=1):
""" Switch the proto shields LED
:param value: 0/1 for off/on. Default is 1.
:return: value
:rtype : int
"""
GPIO.output(BOARD.LED, value)
return value
@staticmethod
def led_off():
""" Switch LED off
:return: 0
"""
GPIO.output(BOARD.LED, 0)
return 0
@staticmethod
def blink(time_sec, n_blink):
if n_blink == 0:
return
BOARD.led_on()
for i in range(n_blink):
time.sleep(time_sec)
BOARD.led_off()
time.sleep(time_sec)
BOARD.led_on()
BOARD.led_off()

@ -0,0 +1,190 @@
""" Defines constants (modes, bandwidths, registers, etc.) needed by SX127x. """
# -*- coding: utf-8 -*-
# Copyright 2015-2018 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
def add_lookup(cls):
""" A decorator that adds a lookup dictionary to the class.
The lookup dictionary maps the codes back to the names. This is used for pretty-printing. """
varnames = filter(str.isupper, cls.__dict__.keys())
lookup = dict(map(lambda varname: (cls.__dict__.get(varname, None), varname), varnames))
setattr(cls, 'lookup', lookup)
return cls
@add_lookup
class MODE:
SLEEP = 0x80
STDBY = 0x81
FSTX = 0x82
TX = 0x83
FSRX = 0x84
RXCONT = 0x85
RXSINGLE = 0x86
CAD = 0x87
FSK_STDBY= 0x01 # needed for calibration
@add_lookup
class BW:
BW7_8 = 0
BW10_4 = 1
BW15_6 = 2
BW20_8 = 3
BW31_25 = 4
BW41_7 = 5
BW62_5 = 6
BW125 = 7
BW250 = 8
BW500 = 9
@add_lookup
class CODING_RATE:
CR4_5 = 1
CR4_6 = 2
CR4_7 = 3
CR4_8 = 4
@add_lookup
class GAIN:
NOT_USED = 0b000
G1 = 0b001
G2 = 0b010
G3 = 0b011
G4 = 0b100
G5 = 0b101
G6 = 0b110
@add_lookup
class PA_SELECT:
RFO = 0
PA_BOOST = 1
@add_lookup
class PA_RAMP:
RAMP_3_4_ms = 0
RAMP_2_ms = 1
RAMP_1_ms = 2
RAMP_500_us = 3
RAMP_250_us = 4
RAMP_125_us = 5
RAMP_100_us = 6
RAMP_62_us = 7
RAMP_50_us = 8
RAMP_40_us = 9
RAMP_31_us = 10
RAMP_25_us = 11
RAMP_20_us = 12
RAMP_15_us = 13
RAMP_12_us = 14
RAMP_10_us = 15
class MASK:
class IRQ_FLAGS:
RxTimeout = 7
RxDone = 6
PayloadCrcError = 5
ValidHeader = 4
TxDone = 3
CadDone = 2
FhssChangeChannel = 1
CadDetected = 0
class REG:
@add_lookup
class LORA:
FIFO = 0x00
OP_MODE = 0x01
FR_MSB = 0x06
FR_MID = 0x07
FR_LSB = 0x08
PA_CONFIG = 0x09
PA_RAMP = 0x0A
OCP = 0x0B
LNA = 0x0C
FIFO_ADDR_PTR = 0x0D
FIFO_TX_BASE_ADDR = 0x0E
FIFO_RX_BASE_ADDR = 0x0F
FIFO_RX_CURR_ADDR = 0x10
IRQ_FLAGS_MASK = 0x11
IRQ_FLAGS = 0x12
RX_NB_BYTES = 0x13
RX_HEADER_CNT_MSB = 0x14
RX_PACKET_CNT_MSB = 0x16
MODEM_STAT = 0x18
PKT_SNR_VALUE = 0x19
PKT_RSSI_VALUE = 0x1A
RSSI_VALUE = 0x1B
HOP_CHANNEL = 0x1C
MODEM_CONFIG_1 = 0x1D
MODEM_CONFIG_2 = 0x1E
SYMB_TIMEOUT_LSB = 0x1F
PREAMBLE_MSB = 0x20
PAYLOAD_LENGTH = 0x22
MAX_PAYLOAD_LENGTH = 0x23
HOP_PERIOD = 0x24
FIFO_RX_BYTE_ADDR = 0x25
MODEM_CONFIG_3 = 0x26
PPM_CORRECTION = 0x27
FEI_MSB = 0x28
DETECT_OPTIMIZE = 0X31
INVERT_IQ = 0x33
DETECTION_THRESH = 0X37
SYNC_WORD = 0X39
DIO_MAPPING_1 = 0x40
DIO_MAPPING_2 = 0x41
VERSION = 0x42
TCXO = 0x4B
PA_DAC = 0x4D
AGC_REF = 0x61
AGC_THRESH_1 = 0x62
AGC_THRESH_2 = 0x63
AGC_THRESH_3 = 0x64
PLL = 0x70
@add_lookup
class FSK:
LNA = 0x0C
RX_CONFIG = 0x0D
RSSI_CONFIG = 0x0E
PREAMBLE_DETECT = 0x1F
OSC = 0x24
SYNC_CONFIG = 0x27
SYNC_VALUE_1 = 0x28
SYNC_VALUE_2 = 0x29
SYNC_VALUE_3 = 0x2A
SYNC_VALUE_4 = 0x2B
SYNC_VALUE_5 = 0x2C
SYNC_VALUE_6 = 0x2D
SYNC_VALUE_7 = 0x2E
SYNC_VALUE_8 = 0x2F
PACKET_CONFIG_1 = 0x30
FIFO_THRESH = 0x35
IMAGE_CAL = 0x3B
DIO_MAPPING_1 = 0x40
DIO_MAPPING_2 = 0x41

@ -0,0 +1,49 @@
#!/usr/bin/env python2.7
""" This is a utility script for the SX127x (LoRa mode). It dumps all registers. """
# Copyright 2015 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
from SX127x.LoRa import *
from SX127x.board_config import BOARD
import argparse
BOARD.setup()
parser = argparse.ArgumentParser(description='LoRa utility functions')
parser.add_argument('--dump', '-d', dest='dump', default=False, action="store_true", help="dump all registers")
args = parser.parse_args()
lora = LoRa(verbose=False)
if args.dump:
print("LoRa register dump:\n")
print("%02s %18s %2s %8s" % ('i', 'reg_name', 'v', 'v'))
print("-- ------------------ -- --------")
for reg_i, reg_name, val in lora.dump_registers():
print("%02X %18s %02X %s" % (reg_i, reg_name, val, format(val, '#010b')[2:]))
print("")
else:
print(lora)
BOARD.teardown()

@ -0,0 +1,118 @@
#!/usr/bin/env python3
""" A simple continuous receiver class. """
# Copyright 2015 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
from time import sleep
from SX127x.LoRa import *
from SX127x.LoRaArgumentParser import LoRaArgumentParser
from SX127x.board_config import BOARD
BOARD.setup()
parser = LoRaArgumentParser("Continous LoRa receiver.")
class LoRaRcvCont(LoRa):
def __init__(self, verbose=False):
super(LoRaRcvCont, self).__init__(verbose)
self.set_mode(MODE.SLEEP)
self.set_dio_mapping([0] * 6)
def on_rx_done(self):
BOARD.led_on()
print("\nRxDone")
self.clear_irq_flags(RxDone=1)
payload = self.read_payload(nocheck=True)
print(bytes(payload).decode())
self.set_mode(MODE.SLEEP)
self.reset_ptr_rx()
BOARD.led_off()
self.set_mode(MODE.RXCONT)
def on_tx_done(self):
print("\nTxDone")
print(self.get_irq_flags())
def on_cad_done(self):
print("\non_CadDone")
print(self.get_irq_flags())
def on_rx_timeout(self):
print("\non_RxTimeout")
print(self.get_irq_flags())
def on_valid_header(self):
print("\non_ValidHeader")
print(self.get_irq_flags())
def on_payload_crc_error(self):
print("\non_PayloadCrcError")
print(self.get_irq_flags())
def on_fhss_change_channel(self):
print("\non_FhssChangeChannel")
print(self.get_irq_flags())
def start(self):
self.reset_ptr_rx()
self.set_mode(MODE.RXCONT)
while True:
sleep(.5)
rssi_value = self.get_rssi_value()
status = self.get_modem_status()
sys.stdout.flush()
sys.stdout.write("\r%d %d %d" % (rssi_value, status['rx_ongoing'], status['modem_clear']))
lora = LoRaRcvCont(verbose=False)
args = parser.parse_args(lora)
lora.set_mode(MODE.STDBY)
lora.set_pa_config(pa_select=1)
#lora.set_rx_crc(True)
#lora.set_coding_rate(CODING_RATE.CR4_6)
#lora.set_pa_config(max_power=0, output_power=0)
#lora.set_lna_gain(GAIN.G1)
#lora.set_implicit_header_mode(False)
#lora.set_low_data_rate_optim(True)
#lora.set_pa_ramp(PA_RAMP.RAMP_50_us)
#lora.set_agc_auto_on(True)
print(lora)
assert(lora.get_agc_auto_on() == 1)
try: input("Press enter to start...")
except: pass
try:
lora.start()
except KeyboardInterrupt:
sys.stdout.flush()
print("")
sys.stderr.write("KeyboardInterrupt\n")
finally:
sys.stdout.flush()
print("")
lora.set_mode(MODE.SLEEP)
print(lora)
BOARD.teardown()

@ -0,0 +1,29 @@
#!/usr/bin/env python3
# used for testing socket_transceiver.py
# connects to socket and allows user to send ascii payload
import socket
def sock_client():
host = '127.0.0.1'
port = 20000
sock = socket.socket()
sock.connect((host,port))
message = input('>> ')
while message != 'quit':
sock.send(bytearray(message,'utf-8'))
data = bytearray(sock.recv(1024)).decode('ascii')
print ('From LoRa: ' + data)
message = input('>> ')
sock.close()
if __name__ == '__main__':
sock_client()

@ -0,0 +1,127 @@
#!/usr/bin/env python3
""" An asynchronous socket <-> LoRa interface """
# MIT License
#
# Copyright (c) 2016 bjcarne
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import sys, asyncore
from time import time
from SX127x.LoRa import *
from SX127x.board_config import BOARD
BOARD.setup()
class Server(asyncore.dispatcher):
def __init__(self, host, port):
asyncore.dispatcher.__init__(self)
self.create_socket()
self.set_reuse_addr()
self.bind((host, port))
self.listen(1)
def handle_accepted(self, sock, addr):
print("Connection from %s:%s" % sock.getpeername())
self.conn = Handler(sock)
class Handler(asyncore.dispatcher):
def __init__(self, sock):
asyncore.dispatcher.__init__(self, sock)
self.databuffer = b""
self.tx_wait = 0
# when data is available on socket send to LoRa
def handle_read(self):
if not self.tx_wait:
data = self.recv(127)
print('Send:' + str(data))
lora.write_payload(list(data))
lora.set_dio_mapping([1,0,0,0,0,0]) # set DIO0 for txdone
lora.set_mode(MODE.TX)
self.tx_wait = 1
# when data for the socket, send
def handle_write(self):
if self.databuffer:
self.send(self.databuffer)
self.databuffer = b""
def handle_close(self):
print("Client disconnected")
self.close()
class LoRaSocket(LoRa):
def __init__(self, verbose=False):
super(LoRaSocket, self).__init__(verbose)
self.set_mode(MODE.SLEEP)
self.set_pa_config(pa_select=1)
self.set_max_payload_length(128) # set max payload to max fifo buffer length
self.payload = []
self.set_dio_mapping([0] * 6) #initialise DIO0 for rxdone
# when LoRa receives data send to socket conn
def on_rx_done(self):
payload = self.read_payload(nocheck=True)
if len(payload) == 127:
self.payload[len(self.payload):] = payload
else:
self.payload[len(self.payload):] = payload
print('Recv:' + str(bytes(self.payload)))
server.conn.databuffer = bytes(self.payload) #send to socket conn
self.payload = []
self.clear_irq_flags(RxDone=1) # clear rxdone IRQ flag
self.reset_ptr_rx()
self.set_mode(MODE.RXCONT)
# after data sent by LoRa reset to receive mode
def on_tx_done(self):
self.clear_irq_flags(TxDone=1) # clear txdone IRQ flag
self.set_dio_mapping([0] * 6)
self.set_mode(MODE.RXCONT)
server.conn.tx_wait = 0
if __name__ == '__main__':
server = Server('localhost', 20000)
lora = LoRaSocket(verbose=False)
print(lora)
try:
asyncore.loop()
except KeyboardInterrupt:
sys.stderr.write("\nKeyboardInterrupt\n")
finally:
lora.set_mode(MODE.SLEEP)
print("Closing socket connection")
server.close()
BOARD.teardown()

@ -0,0 +1,132 @@
#!/usr/bin/env python2.7
""" This script runs a small number of unit tests. """
# Copyright 2015 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
from SX127x.LoRa import *
from SX127x.board_config import BOARD
import unittest
def get_reg(reg_addr):
return lora.get_register(reg_addr)
def SaveState(reg_addr, n_registers=1):
""" This decorator wraps a get/set_register around the function (unittest) call.
:param reg_addr: Start of register addresses
:param n_registers: Number of registers to save. (Useful for MSB/LSB register pairs, etc.)
:return:
"""
def decorator(func):
def wrapper(self):
reg_bkup = lora.get_register(reg_addr)
func(self)
lora.set_register(reg_addr, reg_bkup)
return wrapper
return decorator
class TestSX127x(unittest.TestCase):
def test_setter_getter(self):
bkup = lora.get_payload_length()
for l in [1,50, 128, bkup]:
lora.set_payload_length(l)
self.assertEqual(lora.get_payload_length(), l)
@SaveState(REG.LORA.OP_MODE)
def test_mode(self):
mode = lora.get_mode()
for m in [MODE.STDBY, MODE.SLEEP, mode]:
lora.set_mode(m)
self.assertEqual(lora.get_mode(), m)
@SaveState(REG.LORA.FR_MSB, n_registers=3)
def test_set_freq(self):
freq = lora.get_freq()
for f in [433.5, 434.5, 434.0, freq]:
lora.set_freq(f)
self.assertEqual(lora.get_freq(), f)
@SaveState(REG.LORA.MODEM_CONFIG_3)
def test_set_agc_on(self):
lora.set_agc_auto_on(True)
self.assertEqual((get_reg(REG.LORA.MODEM_CONFIG_3) & 0b100) >> 2, 1)
lora.set_agc_auto_on(False)
self.assertEqual((get_reg(REG.LORA.MODEM_CONFIG_3) & 0b100) >> 2, 0)
@SaveState(REG.LORA.MODEM_CONFIG_3)
def test_set_low_data_rate_optim(self):
lora.set_low_data_rate_optim(True)
self.assertEqual((get_reg(REG.LORA.MODEM_CONFIG_3) & 0b1000) >> 3, 1)
lora.set_low_data_rate_optim(False)
self.assertEqual((get_reg(REG.LORA.MODEM_CONFIG_3) & 0b1000) >> 3, 0)
@SaveState(REG.LORA.DIO_MAPPING_1, 2)
def test_set_dio_mapping(self):
dio_mapping = [1] * 6
lora.set_dio_mapping(dio_mapping)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_1), 0b01010101)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_2), 0b01010000)
self.assertEqual(lora.get_dio_mapping(), dio_mapping)
dio_mapping = [2] * 6
lora.set_dio_mapping(dio_mapping)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_1), 0b10101010)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_2), 0b10100000)
self.assertEqual(lora.get_dio_mapping(), dio_mapping)
dio_mapping = [0] * 6
lora.set_dio_mapping(dio_mapping)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_1), 0b00000000)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_2), 0b00000000)
self.assertEqual(lora.get_dio_mapping(), dio_mapping)
dio_mapping = [0,1,2,0,1,2]
lora.set_dio_mapping(dio_mapping)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_1), 0b00011000)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_2), 0b01100000)
self.assertEqual(lora.get_dio_mapping(), dio_mapping)
dio_mapping = [1,2,0,1,2,0]
lora.set_dio_mapping(dio_mapping)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_1), 0b01100001)
self.assertEqual(get_reg(REG.LORA.DIO_MAPPING_2), 0b10000000)
self.assertEqual(lora.get_dio_mapping(), dio_mapping)
# def test_set_lna_gain(self):
# bkup_lna_gain = lora.get_lna()['lna_gain']
# for target_gain in [GAIN.NOT_USED, GAIN.G1, GAIN.G2, GAIN.G6, GAIN.NOT_USED, bkup_lna_gain]:
# print(target_gain)
# lora.set_lna_gain(target_gain)
# actual_gain = lora.get_lna()['lna_gain']
# self.assertEqual(GAIN.lookup[actual_gain], GAIN.lookup[target_gain])
if __name__ == '__main__':
BOARD.setup()
lora = LoRa(verbose=False)
unittest.main()
BOARD.teardown()

@ -0,0 +1,138 @@
#!/usr/bin/env python
""" A simple beacon transmitter class to send a 1-byte message (0x0f) in regular time intervals. """
# Copyright 2015 Mayer Analytics Ltd.
#
# This file is part of pySX127x.
#
# pySX127x is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# pySX127x is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You can be released from the requirements of the license by obtaining a commercial license. Such a license is
# mandatory as soon as you develop commercial activities involving pySX127x without disclosing the source code of your
# own applications, or shipping pySX127x with a closed source product.
#
# You should have received a copy of the GNU General Public License along with pySX127. If not, see
# <http://www.gnu.org/licenses/>.
import sys
from time import sleep
from SX127x.LoRa import *
from SX127x.LoRaArgumentParser import LoRaArgumentParser
from SX127x.board_config import BOARD
BOARD.setup()
parser = LoRaArgumentParser("A simple LoRa beacon")
parser.add_argument('--single', '-S', dest='single', default=False, action="store_true", help="Single transmission")
parser.add_argument('--wait', '-w', dest='wait', default=1, action="store", type=float, help="Waiting time between transmissions (default is 0s)")
class LoRaBeacon(LoRa):
tx_counter = 0
def __init__(self, verbose=False):
super(LoRaBeacon, self).__init__(verbose)
self.set_mode(MODE.SLEEP)
self.set_dio_mapping([1,0,0,0,0,0])
def on_rx_done(self):
print("\nRxDone")
print(self.get_irq_flags())
print(map(hex, self.read_payload(nocheck=True)))
self.set_mode(MODE.SLEEP)
self.reset_ptr_rx()
self.set_mode(MODE.RXCONT)
def on_tx_done(self):
global args
self.set_mode(MODE.STDBY)
self.clear_irq_flags(TxDone=1)
sys.stdout.flush()
self.tx_counter += 1
sys.stdout.write("\rtx #%d" % self.tx_counter)
if args.single:
print
sys.exit(0)
BOARD.led_off()
sleep(args.wait)
self.write_payload([0x0f])
BOARD.led_on()
self.set_mode(MODE.TX)
def on_cad_done(self):
print("\non_CadDone")
print(self.get_irq_flags())
def on_rx_timeout(self):
print("\non_RxTimeout")
print(self.get_irq_flags())
def on_valid_header(self):
print("\non_ValidHeader")
print(self.get_irq_flags())
def on_payload_crc_error(self):
print("\non_PayloadCrcError")
print(self.get_irq_flags())
def on_fhss_change_channel(self):
print("\non_FhssChangeChannel")
print(self.get_irq_flags())
def start(self):
global args
sys.stdout.write("\rstart")
self.tx_counter = 0
BOARD.led_on()
self.write_payload([0x0f])
self.set_mode(MODE.TX)
while True:
sleep(1)
lora = LoRaBeacon(verbose=False)
args = parser.parse_args(lora)
lora.set_pa_config(pa_select=1)
#lora.set_rx_crc(True)
#lora.set_agc_auto_on(True)
#lora.set_lna_gain(GAIN.NOT_USED)
#lora.set_coding_rate(CODING_RATE.CR4_6)
#lora.set_implicit_header_mode(False)
#lora.set_pa_config(max_power=0x04, output_power=0x0F)
#lora.set_pa_config(max_power=0x04, output_power=0b01000000)
#lora.set_low_data_rate_optim(True)
#lora.set_pa_ramp(PA_RAMP.RAMP_50_us)
print(lora)
#assert(lora.get_lna()['lna_gain'] == GAIN.NOT_USED)
assert(lora.get_agc_auto_on() == 1)
print("Beacon config:")
print(" Wait %f s" % args.wait)
print(" Single tx = %s" % args.single)
print("")
try: input("Press enter to start...")
except: pass
try:
lora.start()
except KeyboardInterrupt:
sys.stdout.flush()
print("")
sys.stderr.write("KeyboardInterrupt\n")
finally:
sys.stdout.flush()
print("")
lora.set_mode(MODE.SLEEP)
print(lora)
BOARD.teardown()

@ -0,0 +1,7 @@
#!/bin/bash
/usr/bin/python3 /home/marcel/ham/RPi-LoRa-KISS-TNC/Start_lora-tnc.py &
sleep 10
sudo /usr/bin/socat PTY,raw,echo=0,link=/tmp/lorakisstnc TCP4:127.0.0.1:10001 &
sleep 3
sudo /usr/sbin/kissattach /tmp/lorakisstnc ax2 &
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