{
    public class SerialPortCommunication
    {
        string filename = null;

        private Form1 mainForm;                     //Reference to The Main Form
        //long TimeNow=DateTime.Now.ToFileTimeUtc();
        //string UploadedFileName = "C:\\Documents and Settings\\mpeloso\\Desktop\\" + TimeNow.ToString() + ".txt";
        //bool BSLMemAccessWarning=true;
        int _err = 1;
        const int SMALL_RAM_model = 0;              //Ram Model Small
        const int LARGE_RAM_model = 1;              //Ram Model Large
        const int loadedModel = 0x4567;
        const int ERR_VERIFY_FAILED = 98;
        const int ERR_ERASE_CHECK_FAILED = 97;
        const int MAX_FRAME_COUNT = 16;
        const int MAX_ERR_COUNT = 5;
        const int ACTION_PROGRAM = 0x01;
        const int ACTION_VERIFY = 0x02;
        const int ACTION_ERASE_CHECK = 0x04;
        const int ACTION_PASSWD = 0x08;
        const int ACTION_ERASE_CHECK_FAST = 0x10;
        const int ERR_NONE = 0;
        const int BSL_TXPWORD = 0x10;               //Command To Send Password
        const int BSL_TXBLK = 0x12;                 //Command to Transmit Block
        const int BSL_RXBLK = 0x14;                 //Command to Recieve Block
        const int BSL_MERAS = 0x18;                 //Command to Mass Erase
        const int BSL_ECHECK = 0x1C;
        const int BSL_MEMOFFSET = 0x21;
        const int ERR_BSL_SYNC = 99;
        const int ERR_COM = 1;                      //Error Communication
        const int ERR_RX_HDR_TIMEOUT = 6;           //Error Hardware Timeout
        const int ERR_RX_NAK = 7;                   //Error Password Not Accepted
        const int ERR_CMD_NOT_COMPLETED = 8;        //Error Command Not Completed
        const int ERR_CMD_FAILED = 9;               //Error Command Failed
        const int CMD_FAILED = 0x70;
        const int DATA_FRAME = 0x80;
        const int DATA_ACK = 0x90;                  //Data Acknowledged
        const int DATA_NAK = 0xA0;                  //Data Not Accepted
        const int DEFAULT_TIMEOUT = 500;
        const int DEFAULT_PROLONG = 10;
        const int MAX_FRAME_SIZE = 256;
        const int MAX_DATA_BYTES = 250;
        static uint bslerrbuf = 0x021E;
        static int maxData = 240;                          //Keeps the Data Frame from overrunning
        private int byteCtr = 0;                            //Byte Counter
        private byte rxHeader = 0;
        private uint prolongFactor = DEFAULT_PROLONG;
        private uint timeout = DEFAULT_TIMEOUT;
        private int lastError;
        private byte[] blkout = new byte[MAX_DATA_BYTES]; /* Transmit buffer */
        private byte seqNo, reqNo;
        private byte[] rxFrame = new byte[MAX_FRAME_SIZE];
        private byte[] blkin = new byte[MAX_DATA_BYTES]; /* Receive buffer	*/
        private int error = ERR_NONE;
        private int meraseCycles = 20;   
        bool ProgramF = true;      
        bool MSP430X = false;        
        const int MODE_BSL = 1;        
        string passwdFile = null;               
        const ushort protocolMode = MODE_BSL;
        const byte BSL_SYNC = 0x80;
        private   SerialPort _serialPort;                    //Reference to SerialPort 
        private List<SerialPortCommunication> AllPorts;
        public SerialPortCommunication(Form1 parentForm,string PortName)