public SB9600Message SendSB9600(SB9600Message message)
{
int attempts = 0;
while (true)
{
if (_sbepMode)
{
ExitSbepMode();
}
var packetSize = message.Bytes.Length;
_port.DtrEnable = true;
_port.RtsEnable = true;
Thread.Sleep(30);
_port.DiscardInBuffer();
_port.DiscardOutBuffer();
UpdateStatus("Sending: " + String.Join(" ", Array.ConvertAll(message.Bytes, x => x.ToString("X2"))));
_port.Write(message.Bytes, 0, packetSize);
var echo = ReceiveSB9600();
if (echo == null || echo.Bytes.Max() == 0x00)
{
if (attempts == 4)
{
throw new Exception("RIB or interface cable does not appear to be connected to the computer. Is the cable connected, and if using a RIB, is it powered on? Is the correct COM port selected?");
}
Thread.Sleep(500);
attempts++;
continue;
}
if (!message.ResponseExpected)
{
_port.DtrEnable = false;
_port.RtsEnable = false;
return(null);
}
var response = ReceiveSB9600();
_port.DtrEnable = false;
_port.RtsEnable = false;
Thread.Sleep(30);
_port.DiscardInBuffer();
_port.DiscardOutBuffer();
if (response == null || response.Bytes.Max() == 0x00)
{
if (attempts == 4)
{
throw new Exception("No response from radio. The RIB and/or cable appears to be connected to computer. Is the cable connected to the radio and is the radio powered on?");
}
Thread.Sleep(500);
attempts++;
continue;
}
return(response);
}
}
public SB9600Message ReceiveSB9600()
{
SB9600Message message = null;
byte[] buffer = new byte[5];
var sw = Stopwatch.StartNew();
while (sw.ElapsedMilliseconds < 100)
{
if (_port.BytesToRead < 5)
{
Thread.Sleep(10);
continue;
}
_port.Read(buffer, 0, 5);
message = new SB9600Message(buffer, 5);
break;
}
return(message);
}