text: from platypush.backend.sensor import SensorBackend
  
  
  class SensorMcp3008Backend(SensorBackend):
      """
      Backend to poll analog sensor values from an MCP3008 chipset
      (https://learn.adafruit.com/raspberry-pi-analog-to-digital-converters/mcp3008)
  
      Requires:
  
          * ``adafruit-mcp3008`` (``pip install adafruit-mcp3008``)
          * The :mod:`platypush.plugins.gpio.sensor.mcp3008` plugin configured
  
      Triggers:
  
          * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
          * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
              gone above a configured threshold
          * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
              gone below a configured threshold
  
      """
  
      def __init__(self, **kwargs):
          super().__init__(plugin='gpio.sensor.mcp3008', **kwargs)
  
  
  # vim:sw=4:ts=4:et:
  