public bool AddByte(byte i_byte)
{
string Ls_string = i_byte.ToString() + " ";
Debug.Write(Ls_string);
switch (state_incoming)
{
case INCOMING_STATE_NONE:
if (INCOMING_SUBSTATE_NONE == substate_incoming && DLE == i_byte)
{
substate_incoming = INCOMING_SUBSTATE_DLE;
}
else if (INCOMING_SUBSTATE_DLE == substate_incoming && STX == i_byte)
{
state_incoming = INCOMING_STATE_STX;
substate_incoming = INCOMING_SUBSTATE_NONE;
size = 0;
}
else
{
state_incoming = INCOMING_STATE_NONE;
substate_incoming = INCOMING_SUBSTATE_NONE;
}
break;
case INCOMING_STATE_STX:
if (INCOMING_SUBSTATE_NONE == substate_incoming && DLE == i_byte)
{
substate_incoming = INCOMING_SUBSTATE_DLE;
}
else if (INCOMING_SUBSTATE_DLE == substate_incoming && STX == i_byte)
{
// This is strange as a DEL STX is not expected here
// We try to sync up again...
state_incoming = INCOMING_STATE_STX;
substate_incoming = INCOMING_SUBSTATE_NONE;
size = 0;
}
else if (INCOMING_SUBSTATE_DLE == substate_incoming && ETX == i_byte)
{
// We have a packet received
state_incoming = INCOMING_STATE_NONE;
substate_incoming = INCOMING_SUBSTATE_NONE;
msgflags = msg[0];
// We must at least got the id == four bytes
if (size >= 4)
{
Debug.WriteLine("");
Debug.Write("New vscp message:");
return true;
}
}
// We come here if m_data is received
// but also for DLE DEL
else
{
substate_incoming = INCOMING_SUBSTATE_NONE;
if (size < msg.Length)
{
msg[size++] = i_byte;
}
else
{
// This packet has wrong format as it have
// to many databytes - start over!
state_incoming = INCOMING_STATE_STX;
substate_incoming = INCOMING_SUBSTATE_NONE;
}
}
break;
case INCOMING_STATE_ETX:
break;
}
return false;
}
private void btnSend_Click(object sender, EventArgs e)
{
try
{
// the the message to the serias interface
char[] aSplit = { ',' };
string sDataBytes = txtData.Text;
string[] asData = sDataBytes.Split(aSplit);
EventCode chosenEvent = m_eventCodeNameToVal[cbxEventCode.SelectedItem.ToString()];
EVENT_PRIORITY chosenPriority = m_eventPriorityToval[cbxPriority.SelectedItem.ToString()];
if (asData.Length == 1 && asData[0].Length == 0)
{
asData = new string[0];
}
// length: dle, stx, flags, 4 bytes header, data bytes, dle, etx
int len = 9 + asData.Length;
byte[] aVscpMsg = new byte[len];
aVscpMsg[0] = message_frame.DLE;
aVscpMsg[1] = message_frame.STX;
int iTemp = (int)chosenPriority;
aVscpMsg[2] = (byte) (iTemp << 5);
iTemp = (int)chosenEvent;
int iVal = (iTemp >> 24) & 0xFF;
aVscpMsg[3] = (byte)iVal;
iVal = (iTemp >> 16) & 0xFF;
aVscpMsg[4] = (byte)iVal;
iVal = iTemp & 0xFF;
aVscpMsg[5] = (byte)iVal;
// nickname is zero
aVscpMsg[6] = 0;
int i = 0;
for (; i < asData.Length; i++)
{
string sNumber = asData[i];
if (sNumber.Length > 0)
{
aVscpMsg[7 + i] = (byte)Int32.Parse(sNumber, System.Globalization.NumberStyles.HexNumber);
}
else
{
aVscpMsg[7 + i] = 0;
}
}
aVscpMsg[7 + i] = message_frame.DLE;
i++;
aVscpMsg[7 + i] = message_frame.ETX;
m_serialPort.Write(aVscpMsg, 0, aVscpMsg.Length);
message_frame generated_vscp_message = new message_frame();
for (int j = 0; j < aVscpMsg.Length; j++)
{
if (generated_vscp_message.AddByte(aVscpMsg[j]))
{
// a new serial vscp message
DateTime now = DateTime.Now;
// Create message so CRC is checked if needed
SerialEventMessage msg = new SerialEventMessage(generated_vscp_message);
string sMsg = msg.ToString();
string sTime = now.ToLongTimeString() + ":" + now.Millisecond;
if (null != m_tracer)
{
m_tracer.Write(sTime + " " + sMsg);
ListViewItem item = new ListViewItem(sTime, sMsg);
item.SubItems.Add(msg.ToString());
m_listView.AddItem(item);
string sEventName = msg.m_event.ToString();
byte[] dataBytes = msg.GetDataBytes();
string sCrack = m_msgCracker.Decode(sEventName, dataBytes);
if (sCrack.Length > 0)
{
ListViewItem item2 = new ListViewItem(sTime, sMsg);
item2.SubItems.Add(sCrack);
m_listView.AddItem(item2);
}
}
}
}
}
catch (IOException ex)
{
Debug.WriteLine("IOException: " + ex.Message);
MessageBox.Show(ex.Message);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
MessageBox.Show(ex.Message);
}
}
