log_lm393smd.py 文件源码

def read_soil_moist_digital(gpio_pin):
    reading = False
    soil_value = None
    count = 0
    while reading == False:
        GPIO.setup(gpio_pin, GPIO.IN)
        try:
            soil_value = GPIO.input(gpio_pin)
        except Exception as e:
            print("!!! couldn't read sensor, error " + str(e))
            time.sleep(1)
        if not soil_value == None:
            print(" The sensor " +  str(gpio_pin) + " returned a value of; " + str(soil_value))
            return soil_value
        count = count + 1
        if count >= 10:
            print("Sensor failed to read ten times, giving up...")
            return 'none'