RE: Serial Port hangs in release
- From: Doug Allender <doug.allender@xxxxxxxxx>
- Date: Mon, 16 Jul 2007 03:52:03 -0700
Seems I have a problem with my build, tried many thing adn eventually
reverted to my initial platform. Hey Presto, the problem went away. So not
very satisfactory, but the problem is resolved. Thanks to all...
--
Snr. Des. Eng.
Northern Hi-Tec
"Doug Allender" wrote:
Hi All.
I have a PXA255 platform using 3 serial ports (COM1,2,3). In debug mode I
have no problems, however my serial ports mobe number, COM1 hardware is
acessed by debug using address COM3:, COM3 hardware is acessed by COM2:...
etc.
My problem occurs when we go to release, when acessing COM3: causes my
programs to hang. I have looked at the registry values and these seem OK. We
also have a modified serial driver for COM1 and COM3, with added IOCTL's so I
can tell the driver is OK, by acessing COM1 instead of COM3 from my code.
any ideas? see below for COM3: registry and code snippet for line which
causes crash.
REG_SZ Dll xsc1bd_serial.Dll
REG_DWORD IoBase a6300000
REG_DWORD Irq 20
REG_SZ Tsp Unimodem.dll
REG_DWORD IoLen 24
REG_DWORD DeviceArrayIndex 2
REG_SZ Prefix COM
REG_DWORD DeviceType 0
REG_SZ FriendlyName Serial Cable on COM3
REG_BINARY DevConfig 10 00 00 00 05 00 00 00 10 01 00 00 00 4b 00 00 00 00
08 00 00 00 00 00 00
Code
Settings.DCBlength = sizeof(DCB);
GetCommState(m_hComPort, &Settings);
Settings.BaudRate = lBaud; // current baudrate
Settings.fBinary = TRUE; // binary mode, no EOF check
Settings.fParity = TRUE;//FALSE // parity checking
Settings.fOutxCtsFlow = FALSE; // CTS output flow control
Settings.fOutxDsrFlow = FALSE; // DSR output flow control
Settings.fDtrControl = DTR_CONTROL_DISABLE; // DTR flow controltype
Settings.fDsrSensitivity = FALSE; // DSR sensitivity
Settings.fTXContinueOnXoff = TRUE; // XOFF continues Tx
Settings.fOutX = FALSE; // XON/XOFF out flow control
Settings.fInX = FALSE; // XON/XOFF in flow control
Settings.fErrorChar = FALSE; // error replacement
Settings.fNull = FALSE; // null stripping
Settings.fRtsControl = RTS_CONTROL_DISABLE; // RTS flow control
Settings.fAbortOnError = FALSE; // abort reads/writes on error
//Settings.fDummy2 = 0; // do not use !
Settings.wReserved = 0; // set to zero!
Settings.XonLim = 10; // transmit XON threshold
Settings.XoffLim = 10; // transmit XOFF threshold
Settings.ByteSize = 8; // number of bits/byte, 4-8
Settings.Parity = EVENPARITY;//NOPARITY // 04=no,odd,even,mark,space
Settings.StopBits = ONESTOPBIT; // 0,1,2 = 1, 1.5, 2
Settings.XonChar = 19; // Tx and Rx XON character
Settings.XoffChar = 16; // Tx and Rx XOFF character
Settings.ErrorChar = 0; // error replacement character
Settings.EofChar = (char)-1; // end of input character
Settings.EvtChar = 0; // received event character
// Settings.wReserved1 = 0; // do not use!
// Open serial port
m_szPort.Format(TEXT("COM%d:"),iPort);
// crash occurs here.......
m_hComPort = CreateFile(m_szPort, GENERIC_READ|GENERIC_WRITE,
0,NULL,OPEN_EXISTING,0,NULL);
--
Snr. Des. Eng.
Northern Hi-Tec
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