Python 树莓皮发光二极管不闪烁

Python 树莓皮发光二极管不闪烁,python,raspberry-pi,Python,Raspberry Pi,我试图让led每秒闪烁一次。这是我的代码: import RPi.GPIO as gpio try: while True: gpio.output(20, 1) time.sleep(1) gpio.output(20, 0) except KeyboardInterrupt: gpio.cleanup() 问题是,我的LED指示灯刚刚亮起,而且不闪烁。执行gpio.output20,0后,您不会入睡。因此,当它重复wh

我试图让led每秒闪烁一次。这是我的代码:

import RPi.GPIO as gpio
try:
    while True:
        gpio.output(20, 1)
        time.sleep(1)
        gpio.output(20, 0)
except KeyboardInterrupt:
        gpio.cleanup()

问题是,我的LED指示灯刚刚亮起,而且不闪烁。

执行gpio.output20,0后,您不会入睡。因此,当它重复while循环时,它会立即打开。这样做:

while True:
    gpio.output(20, 1)
    time.sleep(1)
    gpio.output(20, 0)
    time.sleep(1)