Alpha version of ModBus-MQTT and MQTT-APRS software.

software/mqqt_to_pe1rxf_telemetry/config.yaml

@@ -6,6 +6,7 @@ global:
     #program-log: /home/marcel/rs458.log    # All program output will be written to this file (0 = do not log to file)
     mqtt-server: mqtt.meezenest.nl
     mqtt-port: 1883
+    telemetry-interval: 10              # number of seconds between transmissions
 
 # APRS settings
 aprs:
@@ -14,12 +15,10 @@ aprs:
       to_call: PE1RXF-1                 # Call of the receiver
       destination: APZMDM               # APRS destination
       digipath: 0                       # Digipeater path for weather reports (0 = no path)
-      interval: 30
 #    - port: ax1                         # Linux AX.25 port to which APRS weather report is sent
 #      call: PE1RXF-13                   # Call from which transmissions are made (can be a different call from the call assigned to the AX.25 port)
 #      destination: APZMDM               # APRS destination
 #      digipath: WIDE2-1                      # Digipeater path for weather reports (0 = no path)
-#      interval: 30
 
 # Define the MQTT data to transmit over AX25. The order of the items is the order the data is combined to the telemetry string.
 mqtt:

software/mqqt_to_pe1rxf_telemetry/config_reader.py

@@ -58,6 +58,7 @@ class config_reader:
             tmp = self.config_file_settings['global']['program-log']
             tmp = self.config_file_settings['global']['mqtt-server']
             tmp = self.config_file_settings['global']['mqtt-port']
+            tmp = self.config_file_settings['global']['telemetry-interval']
         except:
             print ("Error in the global section of the configuration file.")
             return 0
@@ -72,7 +73,6 @@ class config_reader:
                 tmp = entry['to_call']
                 tmp = entry['destination']
                 tmp = entry['digipath']
-                tmp = entry['interval']
             except:
                 print ("Error in the aprs section of the configuration file.")
                 return 0

software/mqqt_to_pe1rxf_telemetry/mqtt_to_pe1rxf_telemetry.py

@@ -43,7 +43,7 @@ class MqttHandler:
         self.config = config
         # Define list with length equal to the number of subscriptions defined in the config file
         self.number_of_mqtt_subscriptions = len(config['mqtt']['subscribe'])
-        self.aprs_telemetry_data = ['0.0']*self.number_of_mqtt_subscriptions
+        self.aprs_telemetry_data = [bytes(b'0.0')]*self.number_of_mqtt_subscriptions
 
     def process_message(self, client, userdata, message):
 
@@ -191,16 +191,13 @@ def send_data_to_aprs(weather_data, configuration):
         logging.error("Failed to send data to APRS radio.")
         logging.error(f"Command returned: {e}")
 
+def main():
 
-Configuration, MqttClient, mqtt_handler = setup()
-LoopCounter = 0
+    Configuration, MqttClient, mqtt_handler = setup()
+    LoopCounter = 0
 
-while (1):
-    time.sleep(3) # Sleep for 3 seconds
-
-    # Send APRS telemetry every 10 cycles = every 10 minutes
-    LoopCounter = LoopCounter + 1
-    if LoopCounter >= 1:
+    while (1):
+        time.sleep(Configuration.config_file_settings['global']['telemetry-interval']) # Sleep for number of seconds set in config.yaml
 
         # Send data to LoRa radio via external program (/usr/sbin/beacon). Make sure we use all radios defined in the configuration file.
         for entry in Configuration.config_file_settings['aprs']:
@@ -209,7 +206,6 @@ while (1):
             # We cannot send multiple APRS messages in a short period of time, so we wait 3 deconds between messages.
             time.sleep(3)
 
-        LoopCounter = 0
-
-
+if __name__ == '__main__':
+    main()