/// <summary>
/// State Handler for the state machine
/// </summary>
//Arun Geo Thomas
public void stateHandler()
{
ReadData();
switch (currentStateR)
{
case States.checkStartByte:
if (currentByte != Packet.START_BYTE)
{
nextState = States.checkStartByte;
}
else
{
nextState = States.getMsgSize;
}
break;
case States.getMsgSize:
msgSize = currentByte;
nextState = States.checkMessageType;
if ((msgSize >= maxMsgSize) | msgSize <= 0)
{
if (currentByte == Packet.START_BYTE)
{
nextState = States.getMsgSize;
}
else
{
nextState = States.checkStartByte;
}
}
break;
case States.checkMessageType:
if ((currentByte == Packet.T_MODE) || (currentByte == Packet.T_CONTROL) || (currentByte == Packet.T_DATA) || (currentByte == Packet.T_EXIT) || (currentByte == Packet.T_adMSG) || (currentByte == Packet.T_HEARTBEAT) || (currentByte == Packet.T_FLASHMEM))
{
msgType = currentByte;
nextState = States.setupMsg;
}
else
{
if (msgSize == Packet.START_BYTE)
{
msgSize = currentByte;
nextState = States.checkMessageType;
}
else if (currentByte == Packet.START_BYTE)
{
nextState = States.getMsgSize;
}
else
{
nextState = States.checkStartByte;
}
}
break;
case States.setupMsg:
counter = 0;
storeValues();
break;
case States.getMsg:
storeValues();
break;
case States.checkCRC0:
counter = 0;
pkt_R = Packet.Create_Packet(msgType, (byte)(msgSize - 1), ptr);
if (pkt_R.CRC[0] == (byte)currentByte)
{
nextState = States.checkCRC1;
}
else
{
pkt_R.CRC[0] = currentByte;
SearchforStartByte(0);
}
break;
case States.checkCRC1:
if (pkt_R.CRC[1] == currentByte)
{
nextState = States.checkStartByte;
callBackObject.ProcessPacket(pkt_R);
}
else
{
pkt_R.CRC[1] = currentByte;
SearchforStartByte(1);
}
break;
}
currentStateR = nextState;
}
