Method openPort

external/floppybridge/src/GreaseWeazleInterface.cpp:129–249

Attempts to open the reader running on the COM port provided (or blank for auto-detect)

// Attempts to open the reader running on the COM port provided (or blank for auto-detect)
GWResponse GreaseWeazleInterface::openPort(const std::string& comPort, DriveSelection drive) {
	closePort();

	m_motorIsEnabled = false;

	m_inHDMode = false;

	std::wstring wComPort;
	quicka2w(comPort, wComPort);

	// Find and detect the port
	std::wstring gwPortNumber = wComPort.length() ? wComPort : findPortNumber();

	// If no device detected?
	if (gwPortNumber.empty()) return GWResponse::drPortNotFound;

	switch (m_comPort.openPort(gwPortNumber)) {
	case SerialIO::Response::rInUse:return GWResponse::drPortInUse;
	case SerialIO::Response::rNotFound:return GWResponse::drPortNotFound;
	case SerialIO::Response::rOK: break;
	default: return GWResponse::drPortError;
	}

	// Configure the port
	SerialIO::Configuration config;
	config.baudRate = 9600;
	config.ctsFlowControl = false;

	if (m_comPort.configurePort(config) != SerialIO::Response::rOK) return GWResponse::drPortError;

	applyCommTimeouts(false);

	m_comPort.purgeBuffers();

	// Lets ask GW it's firmware version
	Ack response = Ack::Okay;
	if (!sendCommand(Cmd::GetInfo, (unsigned char)GetInfo::Firmware, response)) {
		m_comPort.purgeBuffers();

		if (!sendCommand(Cmd::GetInfo, (unsigned char)GetInfo::Firmware, response)) {
			closePort();
			return GWResponse::drErrorMalformedVersion;
		}
	};
	unsigned long read = m_comPort.read(&m_gwVersionInformation, sizeof(m_gwVersionInformation));
	if (read != 32) {
		closePort();
		return GWResponse::drErrorMalformedVersion;
	}
	if ((m_gwVersionInformation.major == 0) && (m_gwVersionInformation.minor < 27)) {
		closePort();
		return GWResponse::drOldFirmware;
	}
	if (m_gwVersionInformation.is_main_firmware == 0) {
		closePort();
		return GWResponse::drInUpdateMode;
	}