void TryInitModem()
{
// Try pistoning the modem with higher frequency. This does no harm (such as redundant logging)
PrepareU9Modem(); // Will do nothing if modem is okay
if (!_initFailureTimeout.IsTimedOut())
{
return; // Don't try too frequently
}
if (modemPort != null)
{
return;
}
const string modemPortName = "Basecom HS-USB NMEA 9000";
const int speed = 115200;
string portName = Hardware.Misc.SerialPortFromFriendlyName(modemPortName);
if (portName == null)
{
NihLog.Write(NihLog.Level.Error, "Modem not found (yet). ");
_initFailureTimeout.Reset();
return;
}
NihLog.Write(NihLog.Level.Info, string.Format("Found modem port \"{0}\" at {1}", modemPortName, portName));
modemPort = new System.IO.Ports.SerialPort(portName, speed);
modemPort.ReadTimeout = 3000;
modemPort.NewLine = "\r\n";
modemPort.Open();
modemPort.DiscardInBuffer();
modemPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(delegate { _mainThreadOwnder.Invoke(dataReceivedDelegate); }); // called in different thread!
_lastModemKeepAlive = new Timeouter(60, true);
WriteToModem("AT+CFUN=1\r");
CurrentModemState = ModemState.PowerUp;
}
