You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
116 lines
3.8 KiB
116 lines
3.8 KiB
1 year ago
|
"""
|
||
|
A bridge between APRS messaging and MQTT, designed to control my lora_aprs_node_pico
|
||
|
|
||
|
(C)2022 M.T. Konstapel https://meezenest.nl/mees
|
||
|
|
||
|
This file is part of aprs-mqtt-bridge.
|
||
|
|
||
|
aprs-mqtt-bridge 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.
|
||
|
|
||
|
aprs-mqtt-bridge 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 aprs-mqtt-bridge. If not, see <https://www.gnu.org/licenses/>.
|
||
|
"""
|
||
|
import sys
|
||
|
import random
|
||
|
import time
|
||
|
import config_with_yaml as config
|
||
|
from paho.mqtt import client as mqtt_client
|
||
|
|
||
|
configuration_file = "aprs-mqtt-bridge.yml"
|
||
|
|
||
|
# This is where we keep our settings
|
||
|
class mqtt_settings:
|
||
|
pass
|
||
|
mqtt = mqtt_settings()
|
||
|
|
||
|
def connect_mqtt():
|
||
|
def on_connect(client, userdata, flags, rc):
|
||
|
if rc == 0:
|
||
|
print("Connected to MQTT Broker!")
|
||
|
else:
|
||
|
print("Failed to connect, return code %d\n", rc)
|
||
|
# Set Connecting Client ID
|
||
|
client = mqtt_client.Client(mqtt.client_id)
|
||
|
#client.username_pw_set(username, password)
|
||
|
client.on_connect = on_connect
|
||
|
client.connect(mqtt.broker, mqtt.port)
|
||
|
return client
|
||
|
|
||
|
def publish(client, topic, message):
|
||
|
result = client.publish(topic, message)
|
||
|
status = result[0]
|
||
|
if status == 0:
|
||
|
print(f"Send `{message}` to topic `{topic}`")
|
||
|
else:
|
||
|
print(f"Failed to send message to topic {topic}")
|
||
|
|
||
|
def subscribe(client: mqtt_client, topic):
|
||
|
def on_message(client, userdata, message):
|
||
|
print(f"Received `{message.payload.decode()}` from `{message.topic}` topic")
|
||
|
|
||
|
client.subscribe(topic)
|
||
|
client.on_message = on_message
|
||
|
|
||
|
def read_config():
|
||
|
try:
|
||
|
cfg = config.load(configuration_file)
|
||
|
except:
|
||
|
print ("Configuration file ./" + configuration_file + " not found.")
|
||
|
sys.exit(1)
|
||
|
try:
|
||
|
mqtt.broker = cfg.getProperty("global.broker")
|
||
|
except:
|
||
|
print ("Error in configuration file: no broker defined.")
|
||
|
sys.exit(1)
|
||
|
try:
|
||
|
mqtt.port = cfg.getPropertyWithDefault("global.port", 1883)
|
||
|
except:
|
||
|
print ("Error in configuration file: no port defined.")
|
||
|
sys.exit(1)
|
||
|
try:
|
||
|
mqtt.topic = cfg.getPropertyWithDefault("global.topic", "aprs-mqtt-bridge")
|
||
|
except:
|
||
|
print ("Error in configuration file: no topic defined.")
|
||
|
sys.exit(1)
|
||
|
try:
|
||
|
mqtt.transmit_rate = cfg.getPropertyWithDefault("global.transmit_rate", 30)
|
||
|
except:
|
||
|
print ("Error in configuration file: no transmit_rate defined.")
|
||
|
sys.exit(1)
|
||
|
try:
|
||
|
mqtt.retry = cfg.getPropertyWithDefault("global.retry", 3)
|
||
|
except:
|
||
|
print ("Error in configuration file: no retry defined.")
|
||
|
sys.exit(1)
|
||
|
|
||
|
mqtt.client_id = f'{mqtt.topic}-{random.randint(0, 1000)}'
|
||
|
|
||
|
print (mqtt.broker)
|
||
|
print (mqtt.topic)
|
||
|
print (mqtt.port)
|
||
|
print (mqtt.client_id)
|
||
|
print (cfg)
|
||
|
|
||
|
def run():
|
||
|
read_config()
|
||
|
|
||
|
client = connect_mqtt()
|
||
|
topic = mqtt.topic + '/set'
|
||
|
subscribe(client,topic)
|
||
|
client.loop_start()
|
||
|
while True:
|
||
|
time.sleep(1)
|
||
|
topic = mqtt.topic + '/result'
|
||
|
publish(client,topic,'test')
|
||
|
|
||
|
if __name__ == '__main__':
|
||
|
run()
|