![0_1722048068295_8IPUR$DJSGLU3X4S4{DLUL.png

state=0  #状态标识
rx_buff=[0]*2   #数据接收缓存区
id_tixu=0x0000  #定义ID号接收缓存区
def read_data():
    global id_tixu
    global state    
    if uart.any():  #进行串口数据的接收
            #res=uart.read(1)  #表示为读取一个十六进制数,这里的uart必须是例化的
            #state表示处理接收到的第几位数据
            for i in range(5):
                if state == 0:
                    res=uart.read(1)
                    res = ustruct.unpack("B", res)  #表示将res数据按照B格式进行解包
                    res = hex(res)
                    data = res[0:4]
                    if data == '0xFF': #帧头1
                        state = 1
                elif state == 1:
                    res=uart.read(1)
                    res = ustruct.unpack("B", res)
                    res = hex(res)
                    for i in range(4):
                        data = res[0:4]
                    id_tixu=data
                    print(id_tixu)
                    state = 2
                elif state == 2:
                    res=uart.read(2)
                    res = ustruct.unpack("B", res)
                    res = hex(res)
                    res = int(res)
                    rx_buff[0]=res  #数据1
                    Find_Task=rx_buff[0]
                    print(Find_Task)
                    state = 3
                elif state == 3:
                    #res=uart.read(1)
                    res=uart.read(2)
                    res = ustruct.unpack("B", res)
                    res = hex(res)
                    res = int(res)
                    rx_buff[1]=res  #数据2
                    Target_Num=rx_buff[1]
                    print(Target_Num)
                    state = 4
                elif state == 4:
                    res=uart.read(1)
                    res = ustruct.unpack("B", res)
                    res = hex(res)
                    data = res[0:4]
                    if data == '0xFE': #帧尾
                        state = 0
                        #数据处理处
                        print(rx_buff)
                    else:
                        state = 0