树莓派点亮小灯泡

标签：bytes   write   type   count   warning   recv   NPU   signed   ttyu   

import serial
import time
import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(23, GPIO.OUT)
GPIO.setup(24, GPIO.OUT)
GPIO.setup(25, GPIO.OUT)

GPIO.output(23, GPIO.LOW)
GPIO.output(24, GPIO.LOW)
GPIO.output(25, GPIO.LOW)


ser = serial.Serial("/dev/ttyUSB0",9600)
ser.flushInput()
# ser.write("play,001,$")

def main():
    while True:
        count = ser.inWaiting()
        if count !=0:
            print(count)
            recv = int.from_bytes(ser.read(count), byteorder='big', signed=False)
            print(recv)
            print(type(recv))
            if(recv == 2):
                GPIO.output(23, GPIO.HIGH) 
                GPIO.output(24, GPIO.LOW)
                GPIO.output(25, GPIO.LOW)
                print("hong deng")
            if(recv == 3):
                GPIO.output(23, GPIO.LOW)
                GPIO.output(24, GPIO.LOW)
                GPIO.output(25, GPIO.HIGH)
                print("lv deng")
            if(recv == 4):
                GPIO.output(23, GPIO.LOW)
                GPIO.output(24, GPIO.HIGH)
                GPIO.output(25, GPIO.LOW) 
                print("lan deng")
            ser.flushInput()
        time.sleep(0.1)
        

if __name__ == '__main__':
    main()

树莓派点亮小灯泡

标签：bytes   write   type   count   warning   recv   NPU   signed   ttyu   

原文地址：https://www.cnblogs.com/wjw1014/p/12013395.html