Last version with RPi-LoRa-KISS-TNC included

CHANGELOG.md

@@ -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!

README.md

@@ -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")
+[Main page](screenshots/screenshot_main_page.png)
-![Send message](./screenshots/screenshot_send_message.png "Send message")
+[Send message](screenshots/screenshot_send_message.png)
-![Telemetry](./screenshots/screenshot_telemetry.png "Telemetry")
+[Telemetry](screenshots/screenshot_telemetry.png)

RPi-LoRa-KISS-TNC/CHANGELOG.md

@@ -0,0 +1,24 @@
+# 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!

RPi-LoRa-KISS-TNC/LoraAprsKissTnc.py

@@ -51,9 +51,45 @@ 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)
-        self.set_coding_rate(codingrate)
+        
+        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)
@@ -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:

RPi-LoRa-KISS-TNC/README.md

@@ -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

RPi-LoRa-KISS-TNC/RPi-LoRa-KISS-TNC.ini

@@ -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

RPi-LoRa-KISS-TNC/Start_lora-tnc.py

@@ -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()

start_aprs_server.sh

@@ -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