import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BORAD)
GPIO.setup(AIN2,GPIO.OUT)
GPIO.output(2,GPIO.HIGH)#输出高电平
GPIO.output(2,GPIO.LOW)#输出低电平
time.sleep(0.5)

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BORAD)
GPIO.setup(AIN2,GPIO.OUT)
GPIO.output(2,GPIO.HIGH)#输出高电平
GPIO.output(2,GPIO.LOW)#输出低电平
time.sleep(0.5)