sg90.py 文件源码

def ADC_Read(channel):
    value = 0;
    for i in range(0,4):
        if((channel >> (3 - i)) & 0x01):
            GPIO.output(Address,GPIO.HIGH)
        else:
            GPIO.output(Address,GPIO.LOW)
        GPIO.output(Clock,GPIO.HIGH)
        GPIO.output(Clock,GPIO.LOW)
    for i in range(0,6):
        GPIO.output(Clock,GPIO.HIGH)
        GPIO.output(Clock,GPIO.LOW)
    time.sleep(0.001)
    for i in range(0,10):
        GPIO.output(Clock,GPIO.HIGH)
        value <<= 1
        if(GPIO.input(DataOut)):
            value |= 0x01
        GPIO.output(Clock,GPIO.LOW)
    return value