gpio2osc.py 文件源码

def RCtime (PiPin):
    measurement = 0
    # Discharge capacitor
    GPIO.setup(PiPin, GPIO.OUT)
    GPIO.output(PiPin, GPIO.LOW)
    time.sleep(0.1)

    GPIO.setup(PiPin, GPIO.IN)
    # Count loops until voltage across
    # capacitor reads high on GPIO
    start = time.time()
    while (GPIO.input(PiPin) == GPIO.LOW):
        measurement += 1

    end = time.time()
    # print end - start
    # return measurement
    return str(end - start)

# Connects the socket