import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM) #引脚采用BCM编号方式
GPIO.setup(18, GPIO.OUT) #18号引脚设置为输出模式
GPIO.output(18, GPIO.LOW)
while True:
GPIO.output(18, GPIO.HIGH)
time.sleep(0.3)
GPIO.output(18, GPIO.LOW)
time.sleep(0.3)
错误:led.py:5: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(18, GPIO.OUT) #18号引脚设置为输出模式