int RCX_open(int type, char *portname){
//Opens the connections to the RCX via tower on serial or usb port.
//type 1: serial port, type 2: USB port
//portname for serial port is "COM1" for example
//portname for USB port is "\\\\.\\LEGOTOWER1" for example
//returns 0 if failed, 1 if successful
if (type==1){//open serial port
RCX_port = CreateFileA("COM6", GENERIC_READ | GENERIC_WRITE, 0, 0, CREATE_NEW, FILE_FLAG_WRITE_THROUGH, 0);
if (RCX_port == INVALID_HANDLE_VALUE) return(0);
//set data protocol format
GetCommState(RCX_port,&dcb);
FillMemory(&dcb, sizeof(dcb), 0);
dcb.DCBlength = sizeof(dcb);
dcb.BaudRate=CBR_2400;
dcb.fBinary=1;
dcb.fParity=1;
dcb.fDtrControl=DTR_CONTROL_ENABLE;
dcb.fRtsControl=RTS_CONTROL_ENABLE;
dcb.ByteSize=8;
dcb.Parity=ODDPARITY;
dcb.StopBits=ONESTOPBIT;
if (!SetCommState(RCX_port, &dcb)){
RCX_close();
return(0);
}
GetCommTimeouts(RCX_port,&tout);
tout.ReadIntervalTimeout=250;
tout.ReadTotalTimeoutConstant=10;
tout.ReadTotalTimeoutMultiplier=10;
tout.WriteTotalTimeoutConstant=10;
tout.WriteTotalTimeoutMultiplier=10;
SetCommTimeouts(RCX_port,&tout);
SetupComm(RCX_port,65536,65536);
} else { //type 2: open USB port
RCX_port = CreateFileA(portname, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_FLAG_WRITE_THROUGH | FILE_FLAG_OVERLAPPED | FILE_FLAG_NO_BUFFERING, 0);
if (RCX_port == INVALID_HANDLE_VALUE) return(0);
GetCommTimeouts(RCX_port,&tout);
tout.ReadIntervalTimeout=250;
tout.ReadTotalTimeoutConstant=10;
tout.ReadTotalTimeoutMultiplier=10;
tout.WriteTotalTimeoutConstant=10;
tout.WriteTotalTimeoutMultiplier=10;
SetCommTimeouts(RCX_port,&tout);
}
return(1);
}
int SerialPortImpl::pollImpl(char* buffer, std::size_t size, const Poco::Timespan& timeout)
{
COMMTIMEOUTS prevCTO;
if (!GetCommTimeouts(_handle, &prevCTO))
{
throw Poco::IOException("error getting serial port timeouts");
}
COMMTIMEOUTS cto;
cto.ReadIntervalTimeout = CHARACTER_TIMEOUT;
cto.ReadTotalTimeoutConstant = static_cast<DWORD>(timeout.totalMilliseconds());
cto.ReadTotalTimeoutMultiplier = 0;
cto.WriteTotalTimeoutConstant = MAXDWORD;
cto.WriteTotalTimeoutMultiplier = 0;
if (!SetCommTimeouts(_handle, &cto))
{
throw Poco::IOException("error setting serial port timeouts on serial port");
}
try
{
DWORD bytesRead = 0;
if (!ReadFile(_handle, buffer, size, &bytesRead, NULL))
{
throw Poco::IOException("failed to read from serial port");
}
SetCommTimeouts(_handle, &prevCTO);
return (bytesRead == 0) ? -1 : bytesRead;
}
catch (...)
{
SetCommTimeouts(_handle, &prevCTO);
throw;
}
}
/**
* @brief This function initializes the serial port for both directions (reading/writing) with fixed parameters:
* \n baud=38400, parity=N, data=8, stop=1
* @param *serialPort is a pointer to the name of the serial port
* @return TRUE if success, FALSE in case of error.
*/
BOOL initSerial(CHAR *serialPort)
{
COMMTIMEOUTS timeouts;
int rc;
DCB dcbStruct;
CHAR msgTextBuf[256];
// open the comm port.
comPort = CreateFile(serialPort, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, NULL);
if (comPort == INVALID_HANDLE_VALUE)
{
printf("Unable to open %s. \n", serialPort);
return FALSE;
}
// get the current DCB, and adjust a few bits to our liking.
memset(&dcbStruct, 0, sizeof(dcbStruct));
dcbStruct.DCBlength = sizeof(dcbStruct);
// printf("dcbStruct.DCBlength(): %ld \n", dcbStruct.DCBlength);
rc = GetCommState(comPort, &dcbStruct);
if (rc == 0)
{
printf("\nGetCommState(): ");
printf(getLastErrorText(msgTextBuf, sizeof(msgTextBuf)));
return FALSE;
}
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa363143(v=vs.85).aspx
BuildCommDCB("baud=38400 parity=N data=8 stop=1", &dcbStruct);
rc = SetCommState(comPort, &dcbStruct);
// If the function fails, the return value is zero.
if (rc == 0)
{
printf("\nSetCommState(): ");
printf(getLastErrorText(msgTextBuf, sizeof(msgTextBuf)));
return FALSE;
}
// Retrieve the timeout parameters for all read and write operations on the port.
GetCommTimeouts (comPort, &timeouts);
timeouts.ReadIntervalTimeout = 250;
timeouts.ReadTotalTimeoutMultiplier = 1;
timeouts.ReadTotalTimeoutConstant = 500;
timeouts.WriteTotalTimeoutMultiplier = 1;
timeouts.WriteTotalTimeoutConstant = 2500;
rc = SetCommTimeouts(comPort, &timeouts); // If the function fails, the return value is zero.
if (rc == 0)
{
printf("\nSetCommTimeouts(): ");
printf(getLastErrorText(msgTextBuf, sizeof(msgTextBuf)));
return FALSE;
}
return TRUE;
}
int serialGetC(HANDLE fd, uint8_t* c, int timeout)
{
COMMTIMEOUTS timeouts;
unsigned long res;
COMSTAT comStat;
DWORD errors;
if(!ClearCommError(fd, &errors, &comStat)) {
printErr("could not reset comm errors", GetLastError());
return -1;
}
if(!GetCommTimeouts(fd, &timeouts)) {
printErr("error getting comm timeouts", GetLastError());
return -1;
}
timeouts.ReadIntervalTimeout = timeout;
timeouts.ReadTotalTimeoutConstant = timeout;
timeouts.ReadTotalTimeoutMultiplier = 10;
if(!SetCommTimeouts(fd, &timeouts)) {
printErr("error setting comm timeouts", GetLastError());
return -1;
}
if(!ReadFile(fd, c, 1, &res, NULL)) {
printErr("error reading from serial port", GetLastError());
return -1;
}
if(res != 1)
return -1;
return *c;
}
/** open a serial port */
static HANDLE openPort(const char *port,int baud)
{
HANDLE h;
DCB dcb;
COMMTIMEOUTS tmo;
int status;
/* open the port */
h = CreateFile( port,
GENERIC_READ | GENERIC_WRITE,
0,
0,
OPEN_EXISTING,
0,
0);
if (h == INVALID_HANDLE_VALUE) {
/* quit on error */
return h;
}
/* read current configuration */
status = GetCommState(h,&dcb);
if (status == 0) {
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
/* set the baud rate and other parameters */
dcb.BaudRate = baud;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
/* set configuration */
status = SetCommState(h, &dcb);
if (status == 0) {
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
/* read timeout configuration */
status = GetCommTimeouts(h,&tmo);
if (status == 0) {
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
/* set to indefinite blocking */
tmo.ReadIntervalTimeout = 0;
tmo.ReadTotalTimeoutConstant = 0;
tmo.ReadTotalTimeoutMultiplier = 0;
status = SetCommTimeouts(h,&tmo);
if (status == 0) {
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
return h;
}
virtual bool setTimeout (int iTotalReadTimeout)
{
if (INVALID_HANDLE_VALUE == hComm)
return (TRUE);
if (!GetCommTimeouts(this->hComm, &timeouts_alt))
{
this->close ();
MessageBox (NULL, "could not open comport!\nGetCommTimeouts()",
NULL, NULL);
return (FALSE);
}
COMMTIMEOUTS timeouts;
timeouts.ReadIntervalTimeout = MAXDWORD ;
timeouts.ReadTotalTimeoutMultiplier = MAXDWORD ;
timeouts.ReadTotalTimeoutConstant = (DWORD) iTotalReadTimeout;
timeouts.WriteTotalTimeoutMultiplier = 1000;
timeouts.WriteTotalTimeoutConstant = 1000;
if (!SetCommTimeouts(hComm, &timeouts))
return (FALSE);
return(TRUE);
}
/****************************************************************************
* DESCRIPTION: Initializes the RS485 hardware and variables, and starts in
* receive mode.
* RETURN: none
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Initialize(
void)
{
RS485_Handle =
CreateFile(RS485_Port_Name, GENERIC_READ | GENERIC_WRITE, 0, 0,
OPEN_EXISTING,
/*FILE_FLAG_OVERLAPPED */ 0,
0);
if (RS485_Handle == INVALID_HANDLE_VALUE) {
fprintf(stderr, "Unable to open %s\n", RS485_Port_Name);
RS485_Print_Error();
exit(1);
}
if (!GetCommTimeouts(RS485_Handle, &RS485_Timeouts)) {
RS485_Print_Error();
}
RS485_Configure_Status();
#if PRINT_ENABLED
fprintf(stderr, "RS485 Interface: %s\n", RS485_Port_Name);
#endif
atexit(RS485_Cleanup);
return;
}
HANDLE IO::openComm() {
h = CreateFile(TEXT("COM3"), FILE_SHARE_READ | FILE_SHARE_WRITE, 0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
if (INVALID_HANDLE_VALUE == h) {
int err = GetLastError();
return h;
}
COMMTIMEOUTS timeouts;
GetCommTimeouts(h, &timeouts);
timeouts.ReadIntervalTimeout = 0;
timeouts.ReadTotalTimeoutMultiplier = 0;
timeouts.ReadTotalTimeoutConstant = 0;
timeouts.WriteTotalTimeoutMultiplier = 0;
timeouts.WriteTotalTimeoutConstant = 0;
SetCommTimeouts(h, &timeouts);
//设置串口配置信息
DCB dcb;
if (!GetCommState(h, &dcb))
{
cout << "GetCommState() failed" << endl;
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
int nBaud = 57600;
dcb.DCBlength = sizeof(DCB);
dcb.BaudRate = nBaud;//波特率为9600
dcb.Parity = 0;//校验方式为无校验
dcb.ByteSize = 8;//数据位为8位
dcb.StopBits = ONESTOPBIT;//停止位为1位
if (!SetCommState(h, &dcb))
{
cout << "SetCommState() failed" << endl;
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
//设置读写缓冲区大小
static const int g_nZhenMax = 16;//32768;
if (!SetupComm(h, g_nZhenMax, g_nZhenMax))
{
cout << "SetupComm() failed" << endl;
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
//清空缓冲
PurgeComm(h, PURGE_RXCLEAR | PURGE_TXCLEAR);
//清除错误
DWORD dwError;
COMSTAT cs;
if (!ClearCommError(h, &dwError, &cs))
{
cout << "ClearCommError() failed" << endl;
CloseHandle(h);
return INVALID_HANDLE_VALUE;
}
return h;
}
bool CSerialLine::SetMultiplierTimeOuts( unsigned int aReadTimeOut, unsigned int aWriteTimeOut )const
{
TRACE_FUN( Routine, "CSerialLine::SetMultiplyTimeOuts" );
bool ret( false );
if( isOpen() )
{
#ifdef __WIN32__
COMMTIMEOUTS commTimeOuts;
if( GetCommTimeouts( _hFile, &commTimeOuts ) )
{
TraceRoutine << "commTimeOuts.ReadTotalTimeoutMultiplier: " << commTimeOuts.ReadTotalTimeoutMultiplier << std::endl;
TraceRoutine << "commTimeOuts.WriteTotalTimeoutMultiplier: " << commTimeOuts.WriteTotalTimeoutMultiplier << std::endl;
commTimeOuts.ReadTotalTimeoutMultiplier = aReadTimeOut;
commTimeOuts.WriteTotalTimeoutMultiplier = aWriteTimeOut;
ret = SetCommTimeouts( _hFile, &commTimeOuts );
}
#endif
}
return ret;
}
// configure serial port
bool sconfig(char* fmt) {
DCB dcb;
COMMTIMEOUTS cmt;
// clear dcb
memset(&dcb,0,sizeof(DCB));
dcb.DCBlength=sizeof(DCB);
// configure serial parameters
if(!BuildCommDCB(fmt,&dcb)) return false;
dcb.fOutxCtsFlow=0;
dcb.fOutxDsrFlow=0;
dcb.fDtrControl=0;
dcb.fOutX=0;
dcb.fInX=0;
dcb.fRtsControl=0;
if(!SetCommState(h_serial,&dcb)) return false;
// configure buffers
if(!SetupComm(h_serial,1024,1024)) return false;
// configure timeouts
GetCommTimeouts(h_serial,&cmt);
memcpy(&restore,&cmt,sizeof(cmt));
cmt.ReadIntervalTimeout=100;
cmt.ReadTotalTimeoutMultiplier=100;
cmt.ReadTotalTimeoutConstant=100;
cmt.WriteTotalTimeoutConstant=100;
cmt.WriteTotalTimeoutMultiplier=100;
if(!SetCommTimeouts(h_serial,&cmt)) return false;
return true;
}
/**************************************************************************
* -Name: win_InitSerial ( port, settings )
*
* -Description: This routine initializes the communications port.
*
* -Arguments: GIZ_PORT porttoopen - communications port to be used
* GIZ_PORT_COM1 - for communications port 1
* GIZ_PORT_COM2 - for communications port 2
* short portsettings - communications port parameters
* modes are OR'd together to achieve comm port settings.
* Default: GIZBAUD_9600 | GIZNONE | GIZONESTOPBIT | GIZEIGHTBITS.
*
* baud rates : GIZBAUD_300, GIZBAUD_600, GIZBAUD_1200,
* GIZBAUD_2400, GIZBAUD_4800, GIZBAUD_9600
*
* -Notes: Gizzmo must have comm port settings of no parity (GIZNONE),
* 1 stop bit (GIZONESTOPBITS), and 8 data bits (GIZEIGHTBITS).
* The baud rate is the only settings that can currently
* be varied. To do this, please review the programmers'
* guide on changing the baud rate.
*
* -Returns : 0 if comm port setup okay
*************************************************************************/
long win_InitSerial ( int port )
{
long err;
DWORD start,current;
char aBuf[16];
DWORD bytesRead;
if((err = setup_dcb( (GIZ_PORT)(port-1), 0, (short)LINES_LOW))!=0)
return err;
SISetLinesLow();
while ((current-start) < PowerOnTimeDelay) current = GetTickCount(); // PowerOnTime delay before launch to let calibrator wake up and stabilize
/* create timeout data structure */
GetCommTimeouts(PortID,&TimeOutData);
TimeOutData.ReadIntervalTimeout = 2500;// millisecs between characters
TimeOutData.ReadTotalTimeoutMultiplier = 250; // millisec multiplier by number of characters
TimeOutData.ReadTotalTimeoutConstant = 2500; // 2.5 sec + nchar * 250 msec total time out(about 3secs);
TimeOutData.WriteTotalTimeoutMultiplier = 250;
TimeOutData.WriteTotalTimeoutConstant = 250;
SetCommTimeouts(PortID,&TimeOutData);
start = GetTickCount();
current = GetTickCount();
SISetLinesHigh();
while ((current-start) < PowerOnTimeDelay) current = GetTickCount(); // PowerOnTime delay before launch to let calibrator wake up and stabilize
ReadFile(
PortID, // handle of file to read
aBuf, // address of buffer that receives data
1, // number of bytes to read: the count byte and the command byte
&bytesRead, // address of number of bytes read
NULL // address of structure for data
);
return (err);
}
ComPort::ComPort(wchar_t *portName, unsigned int baund)
{
hCOM = CreateFileW(portName,
GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING, 0, NULL);
if(hCOM == INVALID_HANDLE_VALUE)
throw std::runtime_error ("Unable to open port ");
DCB dcb={0};
COMMTIMEOUTS CommTimeouts;
dcb.DCBlength = sizeof(DCB);
GetCommState(hCOM, &dcb);
dcb.BaudRate = CBR_115200;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
SetCommState(hCOM, &dcb);
GetCommTimeouts(hCOM,&CommTimeouts);
CommTimeouts.ReadIntervalTimeout = 100;
CommTimeouts.ReadTotalTimeoutMultiplier = 1;
CommTimeouts.ReadTotalTimeoutConstant = 100;
CommTimeouts.WriteTotalTimeoutMultiplier = 0;
CommTimeouts.WriteTotalTimeoutConstant = 0;
SetCommTimeouts(hCOM,&CommTimeouts);
FlushFileBuffers(hCOM);
DWORD Errors;
COMSTAT ComState;
ClearCommError(hCOM, &Errors, &ComState);
}
//---------------------------------------------------------------------------
void __fastcall TCommThread::Open()
{
if(Connected==false)
{
//Open device
DeviceHandle=CreateFile( DeviceName.c_str(),
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_DELETE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_TEMPORARY|FILE_FLAG_DELETE_ON_CLOSE,
NULL
);
if(DeviceHandle!=INVALID_HANDLE_VALUE)
{
//Make backup and set DCB of open device
GetCommState(DeviceHandle,&OriginalDCB);
SetCommState(DeviceHandle,&MyDCB);
//Make backup and set COMMTIMEOUTS of open device
GetCommTimeouts(DeviceHandle,&OriginalTimeouts);
SetCommTimeouts(DeviceHandle,&MyTimeouts);
SetupComm(DeviceHandle,1024*ReceiveQueue,1024*TransmitQueue);
//Resume Thread
if(this->Suspended)
Resume();
Connected=true;
}//if
}//if
}
static SERIALPORT *serial_open(const char *device){
HANDLE fh;
DCB dcb={sizeof(DCB)};
COMMTIMEOUTS timeouts;
SERIALPORT *port;
fh = CreateFile(device,GENERIC_READ|GENERIC_WRITE,0,NULL,
OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
if (!fh) return NULL;
port = malloc(sizeof(SERIALPORT));
ZeroMemory(port, sizeof(SERIALPORT));
port->fh = fh;
/* save current port settings */
GetCommState(fh,&port->dcb_save);
GetCommTimeouts(fh,&port->timeouts_save);
dcb.DCBlength=sizeof(DCB);
BuildCommDCB("96,n,8,1",&dcb);
SetCommState(fh,&dcb);
ZeroMemory(&timeouts,sizeof(timeouts));
timeouts.ReadTotalTimeoutConstant=1;
timeouts.WriteTotalTimeoutConstant=1;
SetCommTimeouts(fh,&timeouts);
serial_flush(port);
return port;
}
BOOL CPSerialPort::OpenPort(LPCTSTR Port,int BaudRate,int StopBits,int Parity,int DataBits,LPDataArriveProc proc,DWORD userdata)
{
m_lpDataArriveProc=proc;
m_dwUserData=userdata;
if(m_hComm==INVALID_HANDLE_VALUE)
{
m_hComm=CreateFile(Port,GENERIC_READ|GENERIC_WRITE,0,0,OPEN_EXISTING,0,0);
if(m_hComm==INVALID_HANDLE_VALUE )
{
// AfxMessageBox(_T("ERROR 104:无法打开端口！请检查是否已被占用。"));
return FALSE;
}
GetCommState(m_hComm,&dcb);
dcb.BaudRate=BaudRate;
dcb.ByteSize=DataBits;
dcb.Parity=Parity;
dcb.StopBits=StopBits;
dcb.fParity=FALSE;
dcb.fBinary=TRUE;
dcb.fDtrControl=0;
dcb.fRtsControl=0;
dcb.fOutX=dcb.fInX=dcb.fTXContinueOnXoff=0;
//设置状态参数
SetCommMask(m_hComm,EV_RXCHAR);
SetupComm(m_hComm,1024,1024);
if(!SetCommState(m_hComm,&dcb))
{
AfxMessageBox(_T("ERROR 105:无法按当前参数配置端口，请检查参数！"));
PurgeComm(m_hComm,PURGE_TXCLEAR|PURGE_RXCLEAR);
ClosePort();
return FALSE;
}
//设置超时参数
GetCommTimeouts(m_hComm,&CommTimeOuts);
CommTimeOuts.ReadIntervalTimeout=100;
CommTimeOuts.ReadTotalTimeoutMultiplier=1;
CommTimeOuts.ReadTotalTimeoutConstant=100;
CommTimeOuts.WriteTotalTimeoutMultiplier=1;
CommTimeOuts.WriteTotalTimeoutConstant=100;
if(!SetCommTimeouts(m_hComm,&CommTimeOuts))
{
AfxMessageBox(_T("ERROR 106:无法设置超时参数！"));
PurgeComm(m_hComm,PURGE_TXCLEAR|PURGE_RXCLEAR);
ClosePort();
return FALSE;
}
PurgeComm(m_hComm,PURGE_TXCLEAR|PURGE_RXCLEAR);
Activate();
return TRUE;
}
return TRUE;
}
//-------------------------------------------------------------------------
// Initialize TRK connection over a serial port.
// Returns success.
bool metrotrk_t::init(int port)
{
sseq = 0;
if ( port == DEBUGGER_PORT_NUMBER )
{
int p = find_smartphone_port();
if ( p > 0 )
{
port = p;
msg("Using COM%d: to communicate with the smartphone...\n", port);
}
else
{
warning("Could not autodetect the smartphone port.\n"
"Please specify it manually in the process options");
}
}
char name[32];
qsnprintf(name, sizeof(name), "\\\\.\\COM%d", port);
qstring friendly_name;
if ( !is_serial_port_present(port, &friendly_name) )
{
if ( askyn_c(0,
"HIDECANCEL\n"
"Serial port COM%d seems to be unavailable. Do you want to proceed?",
port ) <= 0 )
{
SetLastError(ERROR_DEVICE_NOT_CONNECTED);
return false;
}
}
msg("Opening serial port %s: (%s)...\n", &name[4], friendly_name.c_str());
// port exists, open it
hp = CreateFile(name, GENERIC_READ|GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
if ( hp == INVALID_HANDLE_VALUE )
return false;
DCB dcb;
memset(&dcb, 0, sizeof(dcb));
dcb.DCBlength = sizeof(dcb);
dcb.BaudRate = CBR_115200;
dcb.fBinary = true;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
if ( !SetCommState(hp, &dcb) )
{
CloseHandle(hp);
return false;
}
GetCommTimeouts(hp, &ct);
return true;
}
void CSerialPort::GetTimeouts(COMMTIMEOUTS& timeouts)
{
ASSERT(IsOpen());
if (!GetCommTimeouts(m_hComm, &timeouts))
{
TRACE(_T("Failed in call to GetCommTimeouts\n"));
AfxThrowSerialException();
}
}
vpr::Uint32 SerialPortImplWin32::read_i(void* buffer, const vpr::Uint32 length,
const vpr::Interval& timeout)
{
unsigned long bytes;
// Shouldn't be setting this every read, but don't have any other way of
// specifying the timeout.
if ( vpr::Interval::NoTimeout != timeout )
{
COMMTIMEOUTS t;
GetCommTimeouts(mHandle, &t);
t.ReadTotalTimeoutConstant = (int)timeout.msec();
SetCommTimeouts(mHandle, &t);
}
if ( ! ReadFile(mHandle, buffer, length, &bytes, NULL) )
{
std::stringstream msg_stream;
msg_stream << "Failed to read from serial port " << mName << ": "
<< getErrorMessageWithCode(GetLastError());
throw IOException(msg_stream.str(), VPR_LOCATION);
}
//Now set the timeout back
if ( vpr::Interval::NoTimeout != timeout )
{
COMMTIMEOUTS t;
GetCommTimeouts(mHandle, &t);
t.ReadTotalTimeoutConstant = (int)mCurrentTimeout*100;
SetCommTimeouts(mHandle, &t);
}
// XXX: Does reading 0 bytes really indicate a timeout?
if ( bytes == 0 )
{
std::stringstream msg_stream;
msg_stream << "Timeout while attempting to read from serial port "
<< mName;
throw TimeoutException(msg_stream.str(), VPR_LOCATION);
}
return bytes;
}
static void set_timeout(urg_serial_t *serial, int timeout)
{
COMMTIMEOUTS timeouts;
GetCommTimeouts(serial->hCom, &timeouts);
timeouts.ReadIntervalTimeout = (timeout == 0) ? MAXDWORD : 0;
timeouts.ReadTotalTimeoutConstant = timeout;
timeouts.ReadTotalTimeoutMultiplier = 0;
SetCommTimeouts(serial->hCom, &timeouts);
}
/*----------------------------------------------------------------------------*/
int serial_read(int fd, void *buffer, unsigned size, unsigned timeout)
{
HANDLE h;
COMMTIMEOUTS ct;
int received = 0;
h = get_h(fd);
if(!h)
return 0;
if(!GetCommTimeouts(h,&ct))
{
err_trace(__FILE__, __LINE__);
return 0;
}
ct.ReadIntervalTimeout = MAXDWORD;
ct.ReadTotalTimeoutMultiplier = MAXDWORD;
ct.ReadTotalTimeoutConstant = timeout;
if(!SetCommTimeouts(h,&ct))
{
err_trace(__FILE__, __LINE__);
return 0;
}
if(!ReadFile(h, buffer, size, (DWORD *)&received, NULL))
{
DWORD Err;
err_trace(__FILE__, __LINE__);
ClearCommBreak(h);
ClearCommError(h, &Err, NULL);
return 0;
}
#ifdef DEBUG
if(!received)
{
// err_trace(__FILE__, __LINE__);
// TRACE("%s:%d: Timeout reached. Timeout: %u\n", __FILE__, __LINE__, timeout );
}
else
{
int i;
fprintf(stderr, "rx: ");
for(i = 0; i < received; i++)
fprintf(stderr, "%02x ", (unsigned)((char *)buffer)[i] & 0xff);
fprintf(stderr, "\n");
}
#endif
return received;
}
BOOL CECGDlg::OpenPort(LPCTSTR Port, int BaudRate, int DataBits, int Parity, int StopBits, HANDLE &hComm)
{
DCB dcb;
BOOL ret;
COMMTIMEOUTS CommTimeOuts;
hComm = CreateFile(Port, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
if(hComm == INVALID_HANDLE_VALUE)
{
UpdateStatus(L"Unable to open the serial port or the serial port has already been opened! Please check if the port is already in use", ADDSTR2STATUS);
return FALSE;
}
dcb.DCBlength = sizeof (dcb);
ret = GetCommState(hComm, &dcb);
if( !ret)
{
UpdateStatus(L"Unable to get Comm. State", ADDSTR2STATUS);
ClosePort(hComm);
return FALSE;
}
dcb.BaudRate = BaudRate;
dcb.fParity = FALSE; // Parity check disabled
dcb.fNull = FALSE;
dcb.ByteSize = DataBits;
dcb.Parity = Parity;
dcb.StopBits = StopBits;
ret = SetCommState(hComm, &dcb);
if( !ret )
{
UpdateStatus(L"Unable to configure serial port. Please check the port configuration! Serial port is closed", ADDSTR2STATUS);
ClosePort(hComm);
return FALSE;
}
GetCommTimeouts(hComm, &CommTimeOuts);
CommTimeOuts.ReadIntervalTimeout = 100; // Max text receiving interval
CommTimeOuts.ReadTotalTimeoutMultiplier = 1;
CommTimeOuts.ReadTotalTimeoutConstant = 100; // Number of timeouts for reading data
CommTimeOuts.WriteTotalTimeoutMultiplier = 0;
CommTimeOuts.WriteTotalTimeoutConstant = 0;
ret = SetCommTimeouts(hComm, &CommTimeOuts);
if ( !ret )
{
UpdateStatus(L"Unable to set timeout parameter! Serial port is closed!", ADDSTR2STATUS);
ClosePort(hComm);
return FALSE;
}
PurgeComm(hComm, PURGE_TXCLEAR | PURGE_RXCLEAR);
return TRUE;
}
bool Serial::Open()
{
if (_file)
return false;
std::wstring path = L"\\\\.\\";
path += GetPortName();
HANDLE file = CreateFile(path.c_str(), GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
if (!file || file == INVALID_HANDLE_VALUE)
{
AfxMessageBox(L"CreateFile failed");
return false;
}
DCB dcb;
::memset(&dcb, 0, sizeof dcb);
dcb.fBinary = true;
dcb.BaudRate = UsbSpeed;
dcb.ByteSize = 8;
if (!SetCommState(file, &dcb))
{
AfxMessageBox(L"SetCommState failed");
return false;
}
COMMTIMEOUTS timeouts;
if (!GetCommTimeouts(file, &timeouts))
{
AfxMessageBox(L"GetCommTimeouts failed");
return false;
}
//timeouts.ReadIntervalTimeout = 5;
//timeouts.ReadTotalTimeoutConstant = 5;
//timeouts.ReadTotalTimeoutMultiplier = 10;
timeouts.ReadIntervalTimeout = 1;
timeouts.ReadTotalTimeoutConstant = 1;
timeouts.ReadTotalTimeoutMultiplier = 1;
if (!SetCommTimeouts(file, &timeouts))
{
AfxMessageBox(L"SetCommTimeouts failed");
return false;
}
_file = file;
_abort = false;
_thread = std::thread(&Serial::Go, this);
return true;
}
DWORD __stdcall ConfigSerialPort(HANDLE h, DWORD dwBaudRate, DWORD dwTimeOutInSec)
{
if (!SetupComm(h, 1024, 1024))
{
return ::GetLastError();
}
DCB dcbConfig;
if (GetCommState(h, &dcbConfig)) /* Configuring Serial Port Settings */
{
dcbConfig.BaudRate = dwBaudRate;
dcbConfig.ByteSize = 8;
dcbConfig.Parity = NOPARITY;
dcbConfig.StopBits = ONESTOPBIT;
dcbConfig.fBinary = TRUE;
dcbConfig.fParity = TRUE;
}
else
{
return ::GetLastError();
}
if (!SetCommState(h, &dcbConfig))
{
return ::GetLastError();
}
COMMTIMEOUTS commTimeout;
if (GetCommTimeouts(h, &commTimeout)) /* Configuring Read & Write Time Outs */
{
commTimeout.ReadIntervalTimeout = 1000 * dwTimeOutInSec;
commTimeout.ReadTotalTimeoutConstant = 1000 * dwTimeOutInSec;
commTimeout.ReadTotalTimeoutMultiplier = 0;
commTimeout.WriteTotalTimeoutConstant = 1000 * dwTimeOutInSec;
commTimeout.WriteTotalTimeoutMultiplier = 0;
}
else
{
return ::GetLastError();
}
if (SetCommTimeouts(h, &commTimeout))
{
return ERROR_SUCCESS;
}
else
{
return ::GetLastError();
}
}
/* device control settings */
unsigned int term_set_control ( unsigned int baud, unsigned char databits, unsigned char stopbits, unsigned char parity, unsigned char handshake )
{
/*
todo:
- error checking
- handshake
- parity
- stopbits
- let the user configure timeouts ?
*/
COMMCONFIG lpCC;
COMMTIMEOUTS timeouts;
if ( !hCom )
{
printf ( "%s: COM port was not open!\n", __FUNCTION__ );
return RXE_FAIL;
}
GetCommTimeouts ( hCom, &timeouts );
// TODO
timeouts.ReadIntervalTimeout = 1;
timeouts.ReadTotalTimeoutMultiplier = 0;
timeouts.ReadTotalTimeoutConstant = 10;
timeouts.WriteTotalTimeoutMultiplier = 0;
timeouts.WriteTotalTimeoutConstant = 10;
if ( !SetCommTimeouts ( hCom, &timeouts ) )
{
printf ( "%s: setting timeouts didn't work!\n", __FUNCTION__ );
return RXE_FAIL;
}
GetCommState ( hCom, &lpCC.dcb );
lpCC.dcb.BaudRate = baud ? baud: CBR_115200;
lpCC.dcb.ByteSize = databits;
lpCC.dcb.StopBits = ONESTOPBIT;
lpCC.dcb.Parity = NOPARITY;
lpCC.dcb.fDtrControl = DTR_CONTROL_DISABLE;
lpCC.dcb.fRtsControl = RTS_CONTROL_DISABLE;
SetCommState ( hCom, &lpCC.dcb );
return RXE_OK;
}
// Set Rx Timeout in ms
// Timeout: Rx receive timeout in ms
// return: last set Rx timeout or -1 on error
int ComPort::SetRxTimeout(int Timeout)
{
COMMTIMEOUTS CommTimeouts;
int result;
DWORD dwError;
if (hPort == INVALID_HANDLE_VALUE)
return -1;
GetCommTimeouts(hPort, &CommTimeouts);
result = CommTimeouts.ReadTotalTimeoutConstant;
// Change the COMMTIMEOUTS structure settings.
CommTimeouts.ReadIntervalTimeout = MAXDWORD;
// JMW 20070515
if (Timeout == 0) {
// no total timeouts used
CommTimeouts.ReadTotalTimeoutMultiplier = 0;
CommTimeouts.ReadTotalTimeoutConstant = 0;
} else {
// only total timeout used
CommTimeouts.ReadTotalTimeoutMultiplier = MAXDWORD;
CommTimeouts.ReadTotalTimeoutConstant = Timeout;
}
CommTimeouts.WriteTotalTimeoutMultiplier = 10;
CommTimeouts.WriteTotalTimeoutConstant = 1000;
// Set the time-out parameters
// for all read and write
// operations on the port.
if (!SetCommTimeouts(hPort, &CommTimeouts)) {
// Could not create the read thread.
CloseHandle(hPort);
hPort = INVALID_HANDLE_VALUE;
#if (WINDOWSPC>0) || NEWCOMM // 091206
Sleep(2000); // needed for windows bug
#endif
ComPort_StatusMessage(MB_OK, TEXT("Error"), TEXT("%s %s"),
// LKTOKEN _@M760_ = "Unable to Set Serial Port Timers"
gettext(TEXT("_@M760_")), sPortName);
dwError = GetLastError();
return -1;
}
return result;
}
EXPORT int serial_comm_set_settings(void *handle, SERIAL_COM_SETTINGS * settings)
{
BOOL port_ready;
DCB comm_state;
COMMTIMEOUTS timeouts;
if(handle == NULL)
return RESULT_FAILURE;
port_ready = SetupComm(handle, settings->InputBufferSize, settings->OutputBufferSize);
if(!port_ready)
return RESULT_FAILURE;
port_ready = GetCommState(handle, &comm_state);
if(!port_ready)
return RESULT_FAILURE;
comm_state.BaudRate = settings->Baud;
comm_state.ByteSize = settings->ByteSize;
comm_state.Parity = settings->Parity;
comm_state.StopBits = settings->StopBits;
comm_state.fAbortOnError = settings->AbortOnError;
port_ready = SetCommState(handle, &comm_state);
if(!port_ready)
return RESULT_FAILURE;
port_ready = GetCommTimeouts (handle, &timeouts);
if(!port_ready)
return RESULT_FAILURE;
timeouts.ReadIntervalTimeout = settings->ReadIntervalTimeout;
timeouts.ReadTotalTimeoutConstant = settings->ReadTotalTimeoutConstant;
timeouts.ReadTotalTimeoutMultiplier = settings->ReadTotalTimeoutMultiplier;
timeouts.WriteTotalTimeoutConstant = settings->WriteTotalTimeoutConstant;
timeouts.WriteTotalTimeoutMultiplier = settings->WriteTotalTimeoutMulitplier;
port_ready = SetCommTimeouts (handle, &timeouts);
if(!port_ready)
return RESULT_FAILURE;
return RESULT_SUCCESS;
}
void win_SetTimeOut(double dataInSecs)
{
GetCommTimeouts(PortID,&TimeOutData);
TimeOutData.ReadTotalTimeoutConstant = short(dataInSecs * 1000) + 500; // 2.5 sec + nchar * 250 msec total time out(about 3secs);
SetCommTimeouts(PortID,&TimeOutData);
}
/* Open the communication channel */
void SerialPort::openChannel()
{
char comName[] = "COMx";
COMMTIMEOUTS comTimeouts;
/* Check if channel already open */
if( channelOpen )
throw new ErrorMsg( "Channel already open! Cannot open port twice." );
/* Generate COM filename and attempt open */
comName[3] = '0' + portNumber;
serialHandle = CreateFile( comName, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
/* Print error and return if failed opening port */
if( serialHandle == INVALID_HANDLE_VALUE )
throw new ErrorMsg( "Error opening COM port!" );
channelOpen = true;
/* Store old COM port settings */
if( !GetCommTimeouts( serialHandle, &oldComTimeouts ) )
throw new ErrorMsg( "Error reading COM port settings!" );
/* Get another copy of the COM settings, and change them */
if( !GetCommTimeouts( serialHandle, &comTimeouts ) )
throw new ErrorMsg( "Error reading COM port settings!" );
comTimeouts.ReadIntervalTimeout = MAXDWORD;
comTimeouts.ReadTotalTimeoutConstant = 0;
comTimeouts.ReadTotalTimeoutMultiplier = 0;
/* Apply new settings */
if( !SetCommTimeouts( serialHandle, &comTimeouts ) )
throw new ErrorMsg( "Error changing COM port settings!" );
}
void CUartChannel::SetupTimesout(void)
{
COMMTIMEOUTS CommTimeOuts ;
if(this->IsOpened() == FALSE)
return;
if (!GetCommTimeouts(this->m_Hcomm,&CommTimeOuts))
return;
CommTimeOuts.ReadIntervalTimeout = 20;//MAXDWORD;//0xFFFFFFFF ;
CommTimeOuts.ReadTotalTimeoutMultiplier = 10;//MAXDWORD;//0 ;
CommTimeOuts.ReadTotalTimeoutConstant = 100;//MAXDWORD-1;//1000 ;
CommTimeOuts.WriteTotalTimeoutMultiplier = 10;//2*CBR_9600/DBUG_BAUD ;
CommTimeOuts.WriteTotalTimeoutConstant = 100 ;
SetCommTimeouts(this->m_Hcomm, &CommTimeOuts);
}
__bool CSerialPort::write_timeout(DWORD TotalTimeouts)
{
COMMTIMEOUTS tout;
if(INVALID_HANDLE_VALUE == m_hFile){
SetLastError(ERROR_INVALID_HANDLE);
return __false;
}
if(!GetCommTimeouts(m_hFile, &tout)){
return __false;
}
tout.WriteTotalTimeoutConstant = TotalTimeouts;
if( !SetCommTimeouts(m_hFile, &tout)){
return __false;
}
return __true;
}