pn532/trainControl.py

import time
import serial
import serial.tools.list_ports
from flask import Flask, request
import requests
from threading import Thread
app = Flask(__name__)



# 火车控制变量
ser = None

#串口打开
def openSer():

    ser = serial.Serial("COM5", 9600, timeout=0.5)
    # 字节大小
    ser.bytesize = 8
    # 无校验
    ser.parity = serial.PARITY_NONE
    # 停止位
    ser.stopbits = 1
    print("已连接端口：" + str(ser.name) + "\n")

    return ser


# 读取串口消息
def recv(serial):
    while True:
        data = serial.read_all()
        if data == '':
            continue
        else:
            break
        sleep(0.02)
    return data


step = 0
# 左右转向的指令
TO_L = b'\xc0\xc1\xed\xa5'
TO_R = b'\xc0\xc2\xed\xa5'


def start(ser):
    print("火车上报监听开启")
    while True:
        data = recv(ser)
        print("火车上报位置信息为 : ", data)
        if data == b'\xc0\x1c\xed\xc0\xb1\xed' or data == b'\xc0\xb1\xed':
            print("火车在左上报")
            res = requests.get("http://127.0.0.1:8082/api/train/updateTrainLocal?local=l")
            print(res.text)
        if data == b'\xc0,\xed\xc0\xb2\xed' or data == b'\xc0\xb2\xed':
            print("火车在右上报")
            res = requests.get("http://127.0.0.1:8082/api/train/updateTrainLocal?local=r")
            print(res.text)
        if data == b'\xc0\xb1\xedZ\xa5':
            res = requests.get("http://127.0.0.1:8082/api/train/updateTrainLocal?local=l")
            print(res.text)
            print("火车复位上报")
        time.sleep(0.1)


#执行运动
@app.route('/train/<action>')
def moving(action):
    print(action)
    global ser
    if action == "2l":
        # ser = openSer()
        ser.write(TO_L)
    if action == "2r":
        # ser = openSer()
        ser.write(TO_R)
    return "success"


@app.route('/start')
def startListing():
    global ser
    ser = openSer()
    t = Thread(target=start, args=(ser,))
    t.start()
    return "success"

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=9000, debug=True)