Method justRead

external/floppybridge/src/SerialIO.cpp:859–889

A very simple, uncluttered version of the below, mainly for linux

// A very simple, uncluttered version of the below, mainly for linux
unsigned int SerialIO::justRead(void* data, unsigned int dataLength) {
	if ((data == nullptr) || (dataLength == 0)) return 0;
	if (!isPortOpen()) return 0;

#ifdef FTDI_D2XX_AVAILABLE
	if (m_ftdi.isOpen()) {
		m_ftdi.FT_SetTimeouts(m_readTimeout + (m_readTimeoutMultiplier * dataLength), m_writeTimeout + (m_writeTimeoutMultiplier * dataLength));

		DWORD dataRead = 0;
		if (m_ftdi.FT_Read((LPVOID)data, dataLength, &dataRead) != FTDI::FT_STATUS::FT_OK) dataRead = 0;
		return dataRead;
	}
#endif

#ifdef _WIN32
	DWORD read = 0;
	if (!ReadFile(m_portHandle, data, dataLength, &read, NULL)) read = 0;
	return read;
#else
	int result = ::read(m_portHandle, data, dataLength);

	if (result < 0) return 0;

	return (unsigned int)result;


#endif

	return 0;

}

// Attempts to read some data from the port.  Returns how much it actually read.
// Returns how much it actually read