Code C# – RS232 – HEX – Checksum

Sử dụng RS232 (truyền thông nối tiếp) trong C#

Sử dụng:

using System.IO.Ports;

2. Khai báo

SerialPort sp = new SerialPort();

3. code

sp.PortName = "COM5";
sp.BaudRate = 9600;
sp.Parity = Parity.None;
sp.DataBits = 8;
sp.StopBits = StopBits.One;
sp.Open();
byte[] bytestosend4 = { 0xA0, 0x02, 0x00, 0xA2 };
sp.Write(bytestosend, 0, 4);
sp.Close();

     int checksum(byte[] byteArray)
    {

        int result = 0;          
        foreach (byte value in byteArray)
        {
            result += value;
        }
        return result;
    }