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