mirror of https://github.com/merbanan/rtl_433.git
96 lines
2.7 KiB
Python
Executable File
96 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Custom data handling example for rtl_433's HTTP (chunked) streaming API of JSON events."""
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# Start rtl_433 (`rtl_433 -F http`), then this script.
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# Needs the Requests package to be installed.
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import requests
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import json
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from time import sleep
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# You can run rtl_433 and this script on different machines,
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# start rtl_433 with `-F http:0.0.0.0`, and change
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# to e.g. `HTTP_HOST = "192.168.1.100"` (use your server ip) below.
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HTTP_HOST = "127.0.0.1"
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HTTP_PORT = 8433
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def stream_events():
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url = f'http://{HTTP_HOST}:{HTTP_PORT}/events'
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headers = {'Accept': 'application/json'}
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# You will receive JSON events, one per line terminated with CRLF.
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# On Events and Stream endpoints a keep-alive of CRLF will be send every 60 seconds.
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response = requests.get(url, headers=headers, timeout=70, stream=True)
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print(f'Connected to {url}')
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for chunk in response.iter_content(chunk_size=None):
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yield chunk
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def handle_event(line):
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try:
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# Decode the message as JSON
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data = json.loads(line)
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#
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# Change for your custom handling below, this is a simple example
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#
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label = data["model"]
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if "channel" in data:
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label += ".CH" + str(data["channel"])
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elif "id" in data:
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label += ".ID" + str(data["id"])
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# E.g. match `model` and `id` to a descriptive name.
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if data["model"] == "LaCrosse-TX" and data["id"] == 123:
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label = "Living Room"
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if "battery_ok" in data:
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if data["battery_ok"] == 0:
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print(label + ' Battery empty!')
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if "temperature_C" in data:
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print(label + ' Temperature ', data["temperature_C"])
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if "humidity" in data:
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print(label + ' Humidity ', data["humidity"])
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except KeyError:
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# Ignore unknown message data and continue
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pass
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except ValueError as e:
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# Warn on decoding errors
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print(f'Event format not recognized: {e}')
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def rtl_433_listen():
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"""Listen to all messages in a loop forever."""
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# Loop forever
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while True:
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try:
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# Open the HTTP (chunked) streaming API of JSON events
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for chunk in stream_events():
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# print(chunk)
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chunk = chunk.rstrip()
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if not chunk:
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# filter out keep-alive empty lines
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continue
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# Decode the JSON message
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handle_event(chunk)
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except requests.ConnectionError:
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print('Connection failed, retrying...')
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sleep(5)
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if __name__ == "__main__":
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try:
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rtl_433_listen()
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except KeyboardInterrupt:
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print('\nExiting.')
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pass
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