public Form1()
{
InitializeComponent();
mPacket = new Packet();
Form1.CheckForIllegalCrossThreadCalls = false;
if (ApplicationDeployment.IsNetworkDeployed)
lblVersion.Text = "Version: " + ApplicationDeployment.CurrentDeployment.CurrentVersion;
else
lblVersion.Text = "Version: " + Application.ProductVersion;
}
public void ReadComm()
{
int bytes_available;
UInt16 headerBytesRead = 0, payloadBytesRemain = 0;
bool havePacket = false;
byte[] prefix = {80, 66, 83, 80, 32, 118, 49, 58};
var encoding = new ASCIIEncoding();
while (true)
{
mPauseEvent.WaitOne(Timeout.Infinite);
if (mShutdownEvent.WaitOne(0))
break;
bytes_available = mSerialPort.BytesToRead;
if (havePacket)
continue;
if (headerBytesRead < 8)
{
while (bytes_available > 0)
{
var next_read = mSerialPort.ReadByte();
var next_char = Convert.ToChar(next_read);
byte next_byte = (byte)next_char;
bytes_available--;
if (next_byte == prefix[headerBytesRead])
{
headerBytesRead++;
if (headerBytesRead == 8)
{
// Found start of packet, break
break;
}
}
else
{
// Wrong character in prefix; reset framing.
if (next_byte == prefix[0])
{
headerBytesRead = 1;
}
else
{
headerBytesRead = 0;
}
}
}
}
// Read the remainder of the header, if not yet found.
if (headerBytesRead < 12)
{
if (bytes_available < 4)
{
continue;
}
var ptype = new byte[2];
mSerialPort.Read(ptype, 0, 2);
mPacket.Type = BitConverter.ToUInt16(ptype, 0);
var payloadBytes = new byte[2];
mSerialPort.Read(payloadBytes, 0, 2);
payloadBytesRemain = BitConverter.ToUInt16(payloadBytes, 0);
bytes_available -= 4;
headerBytesRead += 4;
// Check that the length field is not bogus
if (payloadBytesRemain > 112)
continue;
}
if (bytes_available == 0 || headerBytesRead < 12)
continue;
if (payloadBytesRemain > 0)
{
int bytes_to_read = (payloadBytesRemain >= bytes_available) ? bytes_available : payloadBytesRemain;
var read_buff = new byte[bytes_to_read];
mSerialPort.Read(read_buff, 0, bytes_to_read);
mPacket.AppendByte(read_buff, bytes_to_read);
payloadBytesRemain -= (UInt16)bytes_to_read;
bytes_available -= bytes_to_read;
}
if (payloadBytesRemain > 0)
continue;
if (!havePacket)
{
if (bytes_available < 4)
continue;
var footer_bytes = new byte[4];
mSerialPort.Read(footer_bytes, 0, 4);
havePacket = true;
}
if (havePacket)
{
var packet = mPacket.GetPacket();
textBox1.AppendText(encoding.GetString(packet, 0, 8));
textBox1.AppendText(" Payload length: " + BitConverter.ToInt16(packet, 10));
textBox1.AppendText(" Type: " + mPacket.Type + Environment.NewLine);
switch (mPacket.Type)
{
case 32:
UpdateConfigValues();
break;
case 01:
UpdateHardwareVersion();
mConnectionEstablished = true;
lblConnectionStatus.Text = "Connected";
break;
default:
break;
}
mPacket = new Packet();
havePacket = false;
headerBytesRead = 0;
payloadBytesRemain = 0;
}
}
}
private void SendSetConfig()
{
var packet = new Packet();
packet.Type = 32; // 16 = 0x10, 32 = 0x20, 129 = 0x81
var red = UInt16.Parse(txtRed.Text);
var green = UInt16.Parse(txtGreen.Text);
var delay = UInt16.Parse(txtDelay.Text);
packet.AddTag(0x01, red);
packet.AddTag(0x02, green);
packet.AddTag(0x03, delay);
packet.AddTag(0x04, 0); // Red mode
packet.AddTag(0x05, 0); // Green mode
SendPacket(packet);
}
private void SendPing()
{
var packet = new Packet();
packet.Type = 129;
SendPacket(packet);
}
private void SendPacket(Packet packet)
{
mSerialPortMutex.WaitOne();
if (mSerialPort != null)
if (mSerialPort.IsOpen)
{
var bytes = packet.GetPacket();
mSerialPort.Write(bytes, 0, bytes.Length);
}
mSerialPortMutex.ReleaseMutex();
}
private void SendGetConfig()
{
var packet = new Packet();
packet.Type = 16;
SendPacket(packet);
}