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  • 串口发送16进制字节数组

            /// <summary>
            /// 字符串转16进制字节数组
            /// </summary>
            /// <param name="hexString">例如20 1A</param>
            /// <returns></returns>
            public static byte[] strToHexByte(string hexString)
            {
                hexString = hexString.Replace(" ", "");
                if ((hexString.Length % 2) != 0)
                    hexString += " ";
                byte[] returnBytes = new byte[hexString.Length / 2];
                for (int i = 0; i < returnBytes.Length; i++)
                    returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
                return returnBytes;
            }

            /// <summary>
            /// 字节数组转16进制字符串
            /// </summary>
            /// <param name="bytes"></param>
            /// <returns></returns>
            public static string byteToHexStr(byte[] bytes)
            {
                string returnStr = "";
                if (bytes != null)
                {
                    //for (int i = 0; i < bytes.Length; i++)
                    //{
                    //    returnStr += bytes[i].ToString("X2") + " ";
                    //}
                    foreach (byte byteData in bytes)
                    {
                        returnStr += byteData.ToString("X2") + " ";//X为 十六进制 2为 每次都是两位数 比如0x0A
                    }
                }
                return returnStr.Trim();
            }

    串口字节发送,

                byte[] SendBuf = strToHexByte(textBox3.Text);
               
                _serialPort.Write(SendBuf, 0, SendBuf.Length);

    串口字符串发送

              _serialPort.Write(textBox2.Text + " ");        

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  • 原文地址:https://www.cnblogs.com/liujicai/p/3568678.html
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