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Last version with RPi-LoRa-KISS-TNC included

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marcel
2022-01-31 15:33:34 +01:00
parent 118d7f4009
commit e2b8a4b085
9 changed files with 156 additions and 17 deletions
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21
CHANGELOG.md Normal file
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@@ -0,0 +1,21 @@
# 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 support fo an SX1278 connected to the RPi GPIO
### Deprecated
- RPi-LoRa-KISS-TNC shall be moved to a seperate repository
### Fixed
- LoRa APRS header (<\xff\x01) was not added to the payload, due to an indentation fault. Long live Python!

16
README.md
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@@ -9,7 +9,7 @@ It runs on a Raspberry Pi Zero with Raspberry Pi OS Bullseye.
It can:
* Function as a normal digipeater (mono, dual or cross band)
* Function as a normal digipeater (mono, dual, threefold or cross band)
* Work as an IGate (RX only or RX/TX)
* Send and receive APRS messages
* Display some basic statistics like heard stations.
@@ -18,9 +18,10 @@ It can:
In has (hardware):
* Two build in 1200bps AFSK modems
* Build in transceiver
* Build in LoRa transceiver (SX1278)
* Build in FM transceiver
* Connector for external (second) transceiver
* Two USB ports for a network adapter and a third modem
* Two USB ports for a network adapter and something else
* Real Time Clock
* Raspberry Pi Zero
@@ -28,11 +29,12 @@ It has (software):
* APRX digipeater software for the basic functions
* Apache2 web server for the user interface
* LoRa KISS TNC support (repository found at https://git.meezenest.nl/marcel/RPi-LoRa-KISS-TNC)
* Custom software (from this repository) for extra functionality
## Changelog
- Added LoRa support for SX1278 module on RPi SPI (available on port ax2)
Can be found [here](CHANGELOG.md)
## Further reading
@@ -40,6 +42,6 @@ Want to know more? The complete guide (and more) is available on https://www.mee
## Screen shots web interface
![Main page](./screenshots/screenshot_main_page.png "Main page")
![Send message](./screenshots/screenshot_send_message.png "Send message")
![Telemetry](./screenshots/screenshot_telemetry.png "Telemetry")
[Main page](screenshots/screenshot_main_page.png)
[Send message](screenshots/screenshot_send_message.png)
[Telemetry](screenshots/screenshot_telemetry.png)

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RPi-LoRa-KISS-TNC/CHANGELOG.md Normal file
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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!

39
RPi-LoRa-KISS-TNC/LoraAprsKissTnc.py
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@@ -51,8 +51,44 @@ class LoraAprsKissTnc(LoRa):
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)
@@ -77,7 +113,8 @@ class LoraAprsKissTnc(LoRa):
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:]
data = self.LORA_APRS_HEADER + data
# 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:

12
RPi-LoRa-KISS-TNC/README.md
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@@ -2,13 +2,15 @@
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.
## 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)
## 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
* A lot
* 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

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RPi-LoRa-KISS-TNC/RPi-LoRa-KISS-TNC.ini Normal file
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@@ -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

24
RPi-LoRa-KISS-TNC/Start_lora-tnc.py
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@@ -21,6 +21,25 @@ 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()
@@ -29,13 +48,14 @@ kissQueue = Queue()
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)
server = KissServer(kissQueue, config_TCP_HOST, config_TCP_PORT_AX25)
server.setDaemon(True)
server.start()
# LoRa transceiver instance
lora = LoraAprsKissTnc(kissQueue, server, verbose=False, appendSignalReport = config.APPEND_SIGNAL_REPORT)
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
aprs_utils/APZMDM::PE1RXF-2
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start_aprs_server.sh
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@@ -64,7 +64,7 @@
###########################
# initializing LoRa modem #
###########################
/home/marcel/ham/RPi-LoRa-KISS-TNC/start_all.sh
# /home/marcel/ham/RPi-LoRa-KISS-TNC/start_all.sh
# Start filter for received messages to PE1RXF (all sufixes)
# Messages addressed to PE1RXF are stored in file /home/marcel/ham/aprs_utils/aprs_received_messages.log