apunteak/haizemailea/fan_control

#!/usr/bin/python3

import RPi.GPIO as GPIO
import subprocess
import time

class FanStatus(object):

    ON_THRESHOLD = 50  # 50 (gradu zentigradu) Haizemailea pizten da.
    OFF_THRESHOLD = 43  # 43 (gradu zentrigadu) Haizemailea itzaltzen da.
    SLEEP_INTERVAL = 20  # (segundoak) Tenperatura neurketa maiztasuna.

    def __init__(self):
        super(FanStatus, self).__init__()
        self.FanPin = 27    # pin13

    def setup(self):
        GPIO.setwarnings(False)
        GPIO.setmode(GPIO.BCM)
        GPIO.setup(self.FanPin, GPIO.OUT)

    def get_temp(self):
        output = subprocess.run(['vcgencmd', 'measure_temp'], capture_output=True)
        temp_str = output.stdout.decode()
        try:
           return float(temp_str.split('=')[1].split('\'')[0])
        except (IndexError, ValueError):
           raise RuntimeError('Akatsa tenperatura eskuratzerakoan')

    def main(self):
        # Piztu/Itzaldu balioak egokiak direla ziurtatu
        if self.OFF_THRESHOLD >= self.ON_THRESHOLD:
            raise RuntimeError('Konfiguraketa akatsa -> ITZALTZE tenperatura PIZTE tenperatura baina txikiagoa izan behar da!')

        while True:
            temp = f_status.get_temp()
            if temp > self.ON_THRESHOLD and not GPIO.input(self.FanPin):
                GPIO.output(self.FanPin, True)
            elif GPIO.input(self.FanPin) and temp < self.OFF_THRESHOLD:
                GPIO.output(self.FanPin, False)
            time.sleep(self.SLEEP_INTERVAL)

    def destroy(self):
        GPIO.cleanup()

f_status = FanStatus()

if __name__ == '__main__':
    f_status.setup()
    try:
        f_status.main()
    except KeyboardInterrupt:
        f_status.destroy()