private void ProcessPacket(object sender, SerialDataReceivedEventArgs a)
{
byte[] inBuf = null;
int available;
do
{
available = _serial.BytesToRead;
} while (available < 14); //wait for all bytes before operating on data
inBuf = new byte[_serial.BytesToRead];
_serial.Read(inBuf, 0, inBuf.Length);
string Packet = new string(System.Text.Encoding.UTF8.GetChars(inBuf));
int RemoteChecksum = Int16.Parse(Packet.Substring(11, 3)); //extract sender's checksum
int LocalChecksum = 0;
string data = Packet.Substring(3, 8);
foreach (char digit in data)
{
LocalChecksum += digit; //compute our checksum
}
LocalChecksum %= 1000;
if (RemoteChecksum != LocalChecksum)
{
return; //stop packet processing if checksums don't match
}
string packetType = Packet.Substring(0, 3);
//if (packetType == "$$$") //do SID Protocol
//{
// string command = data.Substring(0, 3);
// string value = data.Substring(3);
// switch (command) {
// case "ENV" : //set voice envelope
// break;
// case "VFQ" : //voice frequency
// break;
// case "VPW" : //voice puslewidth
// break;
// case "FFQ" : //filter frequency
// break;
// case "FRS" : //filter resonance
// break;
// case "SVF" : //voice filter mode
// break;
// case "VEN" : //voice enable: on/off
// break;
// case "VWF" : //voice waveform
// break;
// case "AMP" : //set volume
// break;
// case "FMO" : //filter mode (bp, hp, lp)
// break;
// }
//}
#region boring
if (packetType == "###") //do Mayes Protocol
{
D0.Write(data[0] == '1' ? true : false);
D1.Write(data[1] == '1' ? true : false);
D2.Write(data[2] == '1' ? true : false);
D3.Write(data[3] == '1' ? true : false);
D4.Write(data[4] == '1' ? true : false);
D5.Write(data[5] == '1' ? true : false);
D6.Write(data[6] == '1' ? true : false);
D7.Write(data[7] == '1' ? true : false);
}
#endregion
}
