Need sensor code

[dfarrell07]

Currently, there is no sensor code. Someone should pick this up.

[dfarrell07]

Each process now receives a serial interface object at process spawn, which can be used to poll any sensor. Nav will handle collecting, packaging and passing sensor values, along with the results of a move returned by comm from the low-level code, to localizer after each move command returns from comm. Given these architectural changes, is there any need for dedicated sensor code @napratin @jschornick @rlsnow @rsrinath85? Can we close this issue and delete the sensor package?

[dfarrell07]

The following functions in comm.SerialCommand handle this use case. Therefore, we don't need sensor code and this issue can be closed.

  def getAllSensorData(self):
    return self.runCommand("sensors")  # return the entire dict full of sensor data

  def getSensorData(self, sensorId):
    """Fetches current value of a sensor. Handles only scalar sensors, i.e. ones that return a single int value."""
    response = self.runCommand("sensor {sensorId}".format(sensorId=sensorId))
    # TODO timestamp sensor data here?
    return int(response.get('data', -1))  # NOTE this only handles single-value data

  def getSensorDataByName(self, sensorName):
    sensorId = sensors.get(sensorName, None)
    if sensorId is not None:
      return self.getSensorValue(sensorId)
    else:
      return -1