chickenhouse/src/open.py

'''
Created on Dec 23, 2016

@author: klaehn
'''
import sys
from time import sleep

from data_buffer import DataBuffer
from gate.gate_handler import GateHandler
from power_sensor import PowerSensor

POWER_SENSOR_I2C_BUS = 1
POWER_SENSOR_I2C_ADDRESS = 0x40

CONSECUTIVE_POWER_READS = 1000

MAX_ENGINE_POWER = {"up":330, "down":290}

def main(argv):
    gate_handler = GateHandler()
    power_sensor = PowerSensor(POWER_SENSOR_I2C_BUS, POWER_SENSOR_I2C_ADDRESS)
    power_data = DataBuffer(CONSECUTIVE_POWER_READS)
    gate_handler.open()
    try:
        while True:
            power_data.push(power_sensor.power_mw())
            average = power_data.average()
            print "average power: " + str(average) + " mW"
            if average != None:
                if average > MAX_ENGINE_POWER["up"]:
                    gate_handler.close()
                    sleep(2)
                    gate_handler.stop()
                    print "Gate successfully opened"
                    return 0

    except KeyboardInterrupt:
        print "Closing procedure interrupted."
        return 1


if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))