#!/usr/bin/python3
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setup(18, GPIO.OUT)
GPIO.output(18, GPIO.LOW)
blinks = 0
print('开始闪烁')
while (blinks < 5):
GPIO.output(18, GPIO.HIGH)
time.sleep(1.0)
GPIO.output(18, GPIO.LOW)
time.sleep(1.0)
blinks = blinks + 1
GPIO.output(18, GPIO.LOW)
GPIO.cleanup()
print('结束闪烁')
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