forked from platypush/platypush
47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
import time
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from platypush.backend import Backend
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from platypush.context import get_plugin
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from platypush.message.event.sensor import SensorDataChangeEvent
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from platypush.plugins.gpio.sensor.mcp3008 import GpioSensorMcp3008Plugin
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class SensorMcp3008Backend(Backend):
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last_measurement = {}
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def __init__(self, poll_seconds, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.poll_seconds = poll_seconds
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self.logger.info('Initialized MCP3008 analog sensors backend')
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def send_message(self, msg):
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pass
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def run(self):
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super().run()
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plugin = get_plugin('gpio.sensor.mcp3008')
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while not self.should_stop():
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try:
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measurement = plugin.get_measurement().output
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except:
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plugin = get_plugin('gpio.sensor.mcp3008', reload=True)
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new_measurement = {}
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for key in measurement.keys():
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if key not in self.last_measurement \
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or measurement[key] != self.last_measurement[key]:
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new_measurement[key] = measurement[key]
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if new_measurement:
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self.bus.post(SensorDataChangeEvent(sensors=new_measurement))
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self.last_measurement = measurement
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time.sleep(self.poll_seconds)
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# vim:sw=4:ts=4:et:
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