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442 arune 1
using System;
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using System.Collections.Generic;
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using System.Text;
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public class CanPacket {
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    private byte pktclass = 0;
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//  private byte type = 0;
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//  private byte sid = 0;
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//  private byte rid = 0;
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    private byte data_length = 0;
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    private uint id = 0;
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    private byte[] data = new byte[8];
450 arune 13
    private byte ext = 1;
442 arune 14
    private byte rtr = 0;
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450 arune 16
    public CanPacket() {
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    }
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442 arune 20
    public CanPacket(byte[] raw,uint startIndex) {
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        // 17 bytes, a packet.
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        // UART_START_BYTE id[0] id[1] id[2] id[3] extended remote_request data_length d[0] d[1] d[2] d[3] d[4] d[5] d[6] d[7] UART_END_BYTE
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        /*
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        * 000CCCCx TTTTTTTT SSSSSSSS RRRRRRRR
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        *
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        * <CLASS> = 00011110 00000000 00000000 00000000 = 0x1E000000    NMT, ...
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        * <TYPE>  = 00000000 11111111 00000000 00000000 = 0x00FF0000    NMT[CAN_NMT_PGM_START, CAN_ID_NMT_PGM_ACK, ...]
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        * <SID>   = 00000000 00000000 11111111 00000000 = 0x0000FF00    Sender ID
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        * <RID>   = 00000000 00000000 00000000 11111111 = 0x000000FF    Receiver ID
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        *
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        */
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        uint addr = (((uint)raw[startIndex + 3]) << 24) + (((uint)raw[startIndex + 2]) << 16) + (((uint)raw[startIndex + 1]) << 8) + (((uint)raw[startIndex + 0]));
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        this.id = addr;
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        this.pktclass = (byte)((addr & 0x1E000000) >> 25);
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//      this.type =  (byte)((addr & 0x00FF0000) >> 16);
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//      this.sid =    (byte)((addr & 0x0000FF00) >> 8);
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//      this.rid =    (byte)((addr & 0x000000FF));
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        this.data_length = raw[startIndex + 6];
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        ext = (byte)(0x0f & raw[startIndex + 4]);
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        rtr = (byte)(0x0f & raw[startIndex + 5]);
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        for (int i = 0; i < 8; i++) this.data[i] = raw[startIndex + 7 + i];
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    }
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    public CanPacket(string raw) {
450 arune 50
        //denna funktion fungerar sådär, se till att bygga en bättre parser
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442 arune 52
        //1e00007f 1 0 04 03 02 01 96 3f 76 15
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        string [] split = null;
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        split = raw.Split( new Char [] {' '} );
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        if ((split.Length >= 3) && (split.Length <= 11)) {
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            try {
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                id = System.Convert.ToUInt32(split[0].Trim(), 16);
457 arune 58
            }
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            catch {
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                Console.WriteLine("overflow 1");
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            }
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            try {
442 arune 63
                ext = (byte)(System.Convert.ToUInt32(split[1].Trim(), 16)&0xFF);
457 arune 64
            }
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            catch {
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                Console.WriteLine("overflow 2");
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            }
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            try {
442 arune 69
                rtr = (byte)(System.Convert.ToUInt32(split[2].Trim(), 16)&0xFF);
457 arune 70
            }
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            catch {
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                Console.WriteLine("overflow 3");
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            }
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            try {
442 arune 75
                //testa ext och rtr!
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                for (int i = 0; i < split.Length-3; i++) {
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                    string dummy = split[i+3].Trim();
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                    if (dummy.Length == 0) break;
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                    data_length = (byte)((i+1)&0xFF);
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                    //Console.WriteLine("i: " + i + " i+3: " + (i+3) + " split[i+3]: " +split[i+3]);
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                    data[i] = (byte)(System.Convert.ToUInt32(dummy, 16)&0xFF);
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                }
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            }
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            catch {
457 arune 86
                Console.WriteLine("overflow 4");
442 arune 87
            }
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        }
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    }
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    public override int GetHashCode() {
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        return base.GetHashCode();
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    }
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    public override bool  Equals(Object obj) {
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        CanPacket cpm = (CanPacket)obj;
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        byte[] bytes = cpm.getData();
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        for(int i=0;i<8;i++) if (this.data[i]!=bytes[i]) return false;
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        return (this.id==cpm.getId() && this.data_length==cpm.getDataLength());
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    }
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    public uint getId() { return this.id; }
450 arune 108
    public void setId(uint id) { this.id = id; }
457 arune 109
    public byte getPktClass(){ return this.pktclass; }
450 arune 110
    public void setDataLength(byte datalength){ this.data_length=datalength; }
442 arune 111
    public byte getDataLength(){ return this.data_length; }
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    public byte[] getData(){ return this.data; }
450 arune 113
    public void setExt(byte ext) { this.ext = ext; }
453 arune 114
 
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    public void setData(byte[] data){ this.data = data; }
442 arune 116
 
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//  public override string ToString() {
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//      string str = "";
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//      str = "pktclass: "+pktclass.ToString()+", type: "+type.ToString()+", sid: "+sid.ToString()+", rid: "+rid.ToString()+",data_length: "+data_length.ToString()+", data: ";
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//      for (int i = 0; i < 8; i++) str+=data[i].ToString()+" ";
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//      return str;
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//  }
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    public string toRawString() {
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        string returnstring = "PKT " + String.Format("{0:x8}", id);
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        returnstring = returnstring + " " + String.Format("{0:x1}", ext) + " " + String.Format("{0:x1}", rtr);
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        for (int i = 0; i < data_length; i++) {
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            returnstring = returnstring + " " + String.Format("{0:x2}", data[i]);
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        }
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        //returnstring = returnstring + "\n";
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        return returnstring;
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    }
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    public byte[] getBytes() {
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        byte[] bytes = new byte[15];
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        // 17 bytes, a packet.
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        // UART_START_BYTE id[0] id[1] id[2] id[3] extended remote_request data_length d[0] d[1] d[2] d[3] d[4] d[5] d[6] d[7] UART_END_BYTE
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        /*
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        * 000CCCCx TTTTTTTT SSSSSSSS RRRRRRRR
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        *
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        * <CLASS> = 00011110 00000000 00000000 00000000 = 0x1E000000    NMT, ...
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        * <TYPE>  = 00000000 11111111 00000000 00000000 = 0x00FF0000    NMT[CAN_NMT_PGM_START, CAN_ID_NMT_PGM_ACK, ...]
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        * <SID>   = 00000000 00000000 11111111 00000000 = 0x0000FF00    Sender ID
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        * <RID>   = 00000000 00000000 00000000 11111111 = 0x000000FF    Receiver ID
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        *
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        */
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152
 
153
        bytes[3] = (byte)((id & 0xFF000000) >> 24);
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        bytes[2] = (byte)((id & 0x00FF0000) >> 16);
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        bytes[1] = (byte)((id & 0x0000FF00) >> 8);
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        bytes[0] = (byte)((id & 0x000000FF));
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        bytes[4]=ext;
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        bytes[5]=rtr;
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        bytes[6]=this.data_length;
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        for(int i=0;i<8;i++) bytes[i+7]=this.data[i];
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        return bytes;
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    }
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}