bool DMXThread::connectDMX()
{
if(m_dmxConnected == true)
{
return true;
}
wchar_t buf[64];
FT_ListDevices(0, buf, FT_LIST_BY_INDEX | FT_OPEN_BY_DESCRIPTION);
m_ftHandle = FT_W32_CreateFile(buf, GENERIC_READ|GENERIC_WRITE, 0, 0,
OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL | FT_OPEN_BY_DESCRIPTION, 0);
// connect to first device
if (m_ftHandle == INVALID_HANDLE_VALUE)
{
m_error = tr("No DMX device was found");
return false;
}
FTDCB ftDCB;
if (FT_W32_GetCommState(m_ftHandle, &ftDCB))
{
// FT_W32_GetCommState ok, device state is in ftDCB
ftDCB.BaudRate = 250000;
ftDCB.Parity = FT_PARITY_NONE;
ftDCB.StopBits = FT_STOP_BITS_2;
ftDCB.ByteSize = FT_BITS_8;
ftDCB.fOutX = false;
ftDCB.fInX = false;
ftDCB.fErrorChar = false;
ftDCB.fBinary = true;
ftDCB.fRtsControl = false;
ftDCB.fAbortOnError = false;
if (!FT_W32_SetCommState(m_ftHandle,&ftDCB))
{
m_error = tr("The baud rate of the DMX device could not be set.");
return false;
}
}
else
{
m_error = tr("The DMX device could not be initialized");
return false;
}
FT_W32_PurgeComm(m_ftHandle, FT_PURGE_TX | FT_PURGE_RX);
m_dmxConnected = true;
return true;
}
int dev_open_uart (int n_dev_indx, FT_HANDLE *ph_device)
{
FT_STATUS ft_status;
DWORD dw_num_devs;
LONG devLocation;
ft_status = FT_ListDevices(&dw_num_devs, NULL, FT_LIST_NUMBER_ONLY);
if (ft_status != FT_OK) return FALSE;
if (dw_num_devs == 0){
// No devices were found
return FALSE;
}
ft_status = FT_ListDevices((void*)n_dev_indx, &devLocation, FT_LIST_BY_INDEX | FT_OPEN_BY_LOCATION);
if (ft_status != FT_OK) {
return FALSE;
}
ft_status |= FT_ListDevices((void*)n_dev_indx, &devDescriptor, FT_LIST_BY_INDEX | FT_OPEN_BY_DESCRIPTION);
ft_status |= FT_ListDevices((void*)n_dev_indx, &devSerial, FT_LIST_BY_INDEX | FT_OPEN_BY_SERIAL_NUMBER);
if (ft_status != FT_OK){
return FALSE;
}
#define FT_Classic 0
#if FT_Classic
ft_status |= FT_OpenEx((void*)devLocation, FT_OPEN_BY_LOCATION, ph_device);
ft_status |= FT_SetTimeouts(*ph_device, 500, 500);
ft_status |= FT_SetLatencyTimer(*ph_device, 2);
// Divisor selection
// BAUD = 3000000 / Divisor
// Divisor = (N + 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875)
// Divisor = 24 ==> Baud 125000
ft_status |= FT_SetDivisor(*ph_device, 3000000 / 125000);
// Set UART format 8N1
ft_status |= FT_SetDataCharacteristics(*ph_device, FT_BITS_8, FT_STOP_BITS_1, FT_PARITY_NONE);
if (ft_status != FT_OK){
return FALSE;
}
// Just in case
FT_Purge(*ph_device, FT_PURGE_TX | FT_PURGE_RX);
#else
// Open a device for overlapped I/O using its serial number
*ph_device = FT_W32_CreateFile(
(LPCTSTR)devLocation,
GENERIC_READ | GENERIC_WRITE,
0,
0,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED | FT_OPEN_BY_LOCATION,
0);
if (*ph_device == INVALID_HANDLE_VALUE)
{
// FT_W32_CreateDevice failed
return FALSE;
}
// ----------------------------------------
// --- Set comm parameters
// ----------------------------------------
FTDCB ftDCB;
FTTIMEOUTS ftTimeouts;
FTCOMSTAT ftPortStatus;
DWORD dw_port_error;
if (!FT_W32_GetCommState(*ph_device, &ftDCB))
{
return FALSE;
}
// Divisor selection
// BAUD = 3000000 / Divisor
// Divisor = (N + 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875)
// Divisor = 24 ==> Baud 125000
ftDCB.BaudRate = 38400;
ftDCB.fBinary = TRUE; /* Binary Mode (skip EOF check) */
ftDCB.fParity = FALSE; /* Enable parity checking */
ftDCB.fOutxCtsFlow = FALSE; /* CTS handshaking on output */
ftDCB.fOutxDsrFlow = FALSE; /* DSR handshaking on output */
ftDCB.fDtrControl = DTR_CONTROL_DISABLE; /* DTR Flow control */
ftDCB.fTXContinueOnXoff = FALSE;
ftDCB.fErrorChar = FALSE; // enable error replacement
ftDCB.fNull = FALSE; // enable null stripping
ftDCB.fRtsControl = RTS_CONTROL_DISABLE; // RTS flow control
ftDCB.fAbortOnError = TRUE; // abort reads/writes on error
ftDCB.fOutX = FALSE; /* Enable output X-ON/X-OFF */
ftDCB.fInX = FALSE; /* Enable input X-ON/X-OFF */
ftDCB.fNull = FALSE; /* Enable Null stripping */
ftDCB.fRtsControl = RTS_CONTROL_DISABLE; /* Rts Flow control */
ftDCB.fAbortOnError = TRUE; /* Abort all reads and writes on Error */
// 8N1
ftDCB.ByteSize = 8; /* Number of bits/byte, 4-8 */
ftDCB.Parity = NOPARITY; /* 0-4=None,Odd,Even,Mark,Space */
ftDCB.StopBits = ONESTOPBIT; /* 0,1,2 = 1, 1.5, 2 */
if (!FT_W32_SetCommState(*ph_device, &ftDCB))
{
return FALSE;
}
FT_W32_GetCommState(*ph_device, &ftDCB);
// Set serial port Timeout values
FT_W32_GetCommTimeouts(*ph_device, &ftTimeouts);
ftTimeouts.ReadIntervalTimeout = 0;
ftTimeouts.ReadTotalTimeoutMultiplier = 0;
ftTimeouts.ReadTotalTimeoutConstant = 200;
ftTimeouts.WriteTotalTimeoutConstant = 0;
ftTimeouts.WriteTotalTimeoutMultiplier = 0;
FT_W32_SetCommTimeouts(*ph_device, &ftTimeouts);
FT_W32_ClearCommError(*ph_device, &dw_port_error, &ftPortStatus);
FT_W32_PurgeComm(*ph_device, PURGE_TXCLEAR | PURGE_RXCLEAR | PURGE_RXABORT | PURGE_TXABORT);
#endif // End of W32 device init
return TRUE;
}
