import utime
from driver import UART
import math

# 串口实例化
#ttl串口
uart0 = UART()
uart0.open("serial1")
#rs232串口
uart1 = UART()
uart1.open("serial2")
if __name__ == '__main__':
    print("Initial start")
    utime.sleep(1)
    while True:
        # 创建一个writeBuf字节数组，用于串口读
        resultSize = 0
        result = bytearray(50)  # RS232串口接收数据
        resultSize = uart1.read(result)
        # print("read data length", resultSize)
        # print("read data",result)
        # print("read data",result.decode('utf-8'))
        utime.sleep_ms(1000)
        if(resultSize > 0):
            # TTL串口发送接收到的数据
            strResult=result[0:resultSize].decode('utf-8')
            print("read data",strResult)
            list= strResult.split(' ')
            print("read data------------")
            print(list)
            print('----------')
            lengthList=len(list)
            print('----lengthList------',lengthList)
            numberKg=list[lengthList-1]
            kg=numberKg.strip('kg\r\n')
            print(kg)
            if(numberKg):
                # 转换结果方便计算
                tzNumber=float(kg)+0.1
                # 计算体重+0.1kg
                #转回string类型
                tzStr=str(tzNumber)
                print(tzStr)
                lis=tzStr.split('.')
                #拼接计算后的list[2]
                list[lengthList-1]=lis[0]+'.'+lis[1][0]+'kg\r\n'
                print('-----666-')
                print(list)
                #转为原始数据字符串
                list2=' '.join(list)
                print('----777------------')
                print(list2)
                print('new result',list2)
                #转成bytearray发送到串口
                sendByarray=bytearray(list2.encode("utf-8"))
                uart0.write(sendByarray)
                print('sund succer-----')
                utime.sleep_ms(1000)
                #ST,GS,    17.5,kg .encode()
                #ST,GS    60.5kg 


        print("this is usb reply")  # usb口作为交互口，利用print打印消息