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115 lines
3.8 KiB
115 lines
3.8 KiB
"""
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A bridge between APRS messaging and MQTT, designed to control my lora_aprs_node_pico
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(C)2022 M.T. Konstapel https://meezenest.nl/mees
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This file is part of aprs-mqtt-bridge.
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aprs-mqtt-bridge is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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aprs-mqtt-bridge is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with aprs-mqtt-bridge. If not, see <https://www.gnu.org/licenses/>.
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"""
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import sys
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import random
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import time
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import config_with_yaml as config
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from paho.mqtt import client as mqtt_client
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configuration_file = "aprs-mqtt-bridge.yml"
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# This is where we keep our settings
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class mqtt_settings:
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pass
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mqtt = mqtt_settings()
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def connect_mqtt():
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def on_connect(client, userdata, flags, rc):
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if rc == 0:
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print("Connected to MQTT Broker!")
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else:
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print("Failed to connect, return code %d\n", rc)
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# Set Connecting Client ID
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client = mqtt_client.Client(mqtt.client_id)
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#client.username_pw_set(username, password)
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client.on_connect = on_connect
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client.connect(mqtt.broker, mqtt.port)
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return client
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def publish(client, topic, message):
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result = client.publish(topic, message)
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status = result[0]
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if status == 0:
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print(f"Send `{message}` to topic `{topic}`")
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else:
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print(f"Failed to send message to topic {topic}")
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def subscribe(client: mqtt_client, topic):
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def on_message(client, userdata, message):
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print(f"Received `{message.payload.decode()}` from `{message.topic}` topic")
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client.subscribe(topic)
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client.on_message = on_message
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def read_config():
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try:
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cfg = config.load(configuration_file)
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except:
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print ("Configuration file ./" + configuration_file + " not found.")
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sys.exit(1)
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try:
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mqtt.broker = cfg.getProperty("global.broker")
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except:
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print ("Error in configuration file: no broker defined.")
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sys.exit(1)
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try:
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mqtt.port = cfg.getPropertyWithDefault("global.port", 1883)
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except:
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print ("Error in configuration file: no port defined.")
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sys.exit(1)
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try:
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mqtt.topic = cfg.getPropertyWithDefault("global.topic", "aprs-mqtt-bridge")
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except:
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print ("Error in configuration file: no topic defined.")
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sys.exit(1)
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try:
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mqtt.transmit_rate = cfg.getPropertyWithDefault("global.transmit_rate", 30)
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except:
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print ("Error in configuration file: no transmit_rate defined.")
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sys.exit(1)
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try:
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mqtt.retry = cfg.getPropertyWithDefault("global.retry", 3)
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except:
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print ("Error in configuration file: no retry defined.")
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sys.exit(1)
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mqtt.client_id = f'{mqtt.topic}-{random.randint(0, 1000)}'
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print (mqtt.broker)
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print (mqtt.topic)
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print (mqtt.port)
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print (mqtt.client_id)
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print (cfg)
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def run():
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read_config()
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client = connect_mqtt()
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topic = mqtt.topic + '/set'
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subscribe(client,topic)
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client.loop_start()
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while True:
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time.sleep(1)
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topic = mqtt.topic + '/result'
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publish(client,topic,'test')
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if __name__ == '__main__':
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run()
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