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c# SerialPort HEX there is no data received - Dolen

 1 year ago
source link: https://www.cnblogs.com/sayshap/p/16468077.html
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c# SerialPort HEX there is no data received

C#窗口程序进行串口通信，按照串口通信协议，设置com口，波特率，停止位，校验位，数据位，本地虚拟串口调试ok，但是和外设调试时，发送HEX模式数据命令，没有数据返回，

所以关键问题在于HEX模式，发送命令格式也必须是HEX模式下，废话不多说，上代码：

        public byte[] HexStringToBytes(string hs)
        {
            string[] strArr = hs.Trim().Split(' ');
            byte[] b = new byte[strArr.Length];
            //逐个字符变为16进制字节数据
            for (int i = 0; i < strArr.Length; i++)
            {
                b[i] = (byte)int.Parse(strArr[i], System.Globalization.NumberStyles.HexNumber);
            }
            //按照指定编码将字节数组变为字符串
            return b;
        }

关键代码：

int.Parse(strArr[i], System.Globalization.NumberStyles.HexNumber);

之前无论如何也无法接收到数据，通过此段代码轻松解决HEX模式无响应值的问题。


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