How move UART2 to MCBSP3 pads AM3517 WEC7

Andrew Efremov

Other Parts Discussed in Thread: SYSCONFIG

I am try use UART2 on my custom board on MCBSP3 pins.

for it i am remaked bsp_padcfg.h like this:

But my uart2 doesn't working. It can send bytes but not receive.

it looks like I missed something in the initialization
please help

over 13 years ago

0 Adeneo Embedded support team over 13 years ago

Mastermind 9310 points

The modifications you made seem fine but there might some other reasons why you can send but not receive data:

- Some driver overrides you mux configuration (should not happen if you properly modified the reference BSP for your custom board)

- Which test application are you using? Have tested this same application with another working UART?

- What cable do you use and what device is on the other side?

- Do you use flow control and is the device on the other side managing flow control and correctly wired to the CTS/RTS signals?

0 Andrew Efremov over 13 years ago in reply to Adeneo Embedded support team

Prodigy 120 points

2605.serail_uart.zip Hello thanks you for answer.
i am trying add some debugging code
in function
HWOpen()
i add this code in pdd.c (wince700\platform\common\src\soc\COMMON_TI_V1\COMMON_TI\SERIAL\UART\pdd.c):

    // configure uart port with default settings
    SetBaudRate(pPdd, pPdd->dcb.BaudRate);
    // Enable interrupts (no TX interrupt)
    pPdd->intrMask |= UART_IER_LINE|UART_IER_MODEM;
    OUTREG8(&pPdd->pUartRegs->IER, pPdd->intrMask);
    // Update line & modem status
    ReadModemStat(pPdd);
//======================= debug begin
{

    PHYSICAL_ADDRESS pa;
    static OMAP_PRCM_CORE_CM_REGS               *pOMAP_PRCM_CORE_CM_REGS;
    static OMAP_PRCM_CLOCK_CONTROL_CM_REGS      *pOMAP_PRCM_CLOCK_CONTROL_CM_REGS;
    static OMAP_SYSC_PADCONFS_REGS              *pConfig;
    static OMAP_GPIO_REGS            *pGpio_reg;
    static OMAP_PRCM_PER_CM_REGS        *pPCRM_PER_reg;

    pa.QuadPart      = OMAP_PRCM_PER_CM_REGS_PA;
    pPCRM_PER_reg = (OMAP_PRCM_PER_CM_REGS *)MmMapIoSpace(pa, sizeof(OMAP_PRCM_PER_CM_REGS), FALSE);

    pa.QuadPart      = OMAP_PRCM_CORE_CM_REGS_PA;
    pOMAP_PRCM_CORE_CM_REGS = (OMAP_PRCM_CORE_CM_REGS *)MmMapIoSpace(pa, sizeof(OMAP_PRCM_CORE_CM_REGS), FALSE);

    pa.QuadPart      = OMAP_PRCM_CLOCK_CONTROL_CM_REGS_PA;
    pOMAP_PRCM_CLOCK_CONTROL_CM_REGS = (OMAP_PRCM_CLOCK_CONTROL_CM_REGS*)MmMapIoSpace(pa, sizeof(OMAP_PRCM_CLOCK_CONTROL_CM_REGS), FALSE);

    pa.QuadPart   = OMAP_SYSC_PADCONFS_REGS_PA;
    pConfig       = (OMAP_SYSC_PADCONFS_REGS *)MmMapIoSpace(pa, sizeof(OMAP_SYSC_PADCONFS_REGS), FALSE);

    pa.QuadPart     = OMAP_GPIO5_REGS_PA;
    pGpio_reg          = (OMAP_GPIO_REGS *)MmMapIoSpace(pa, sizeof(OMAP_GPIO_REGS), FALSE);

    RETAILMSG(1,(TEXT("CONTROL_PADCONF_MCBSP3_FSX uart2_rx   (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_MCBSP3_FSX, pConfig->CONTROL_PADCONF_MCBSP3_FSX ));
    RETAILMSG(1,(TEXT("CONTROL_PADCONF_MCBSP3_CLKX uart2_tx     (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_MCBSP3_CLKX, pConfig->CONTROL_PADCONF_MCBSP3_CLKX ));
    RETAILMSG(1,(TEXT("CONTROL_PADCONF_MCBSP3_DR   uart2_rts     (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_MCBSP3_DR, pConfig->CONTROL_PADCONF_MCBSP3_DR ));
    RETAILMSG(1,(TEXT("CONTROL_PADCONF_MCBSP3_DX   uart2_cts     (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_MCBSP3_DX, pConfig->CONTROL_PADCONF_MCBSP3_DX ));

    RETAILMSG(1,(TEXT("CONTROL_PADCONF_UART2_CTS       (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_UART2_CTS, pConfig->CONTROL_PADCONF_UART2_CTS ));
    RETAILMSG(1,(TEXT("CONTROL_PADCONF_UART2_RTS        (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_UART2_RTS, pConfig->CONTROL_PADCONF_UART2_RTS ));
    RETAILMSG(1,(TEXT("CONTROL_PADCONF_UART2_TX        (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_UART2_TX, pConfig->CONTROL_PADCONF_UART2_TX ));
    RETAILMSG(1,(TEXT("CONTROL_PADCONF_UART2_RX        (0x%x) 0x%x\r\n"),&pConfig->CONTROL_PADCONF_UART2_RX, pConfig->CONTROL_PADCONF_UART2_RX ));

    RETAILMSG(1,(TEXT("CM_FCLKEN_PER          (0x%x) 0x%x\r\n\r\n"),&pPCRM_PER_reg->CM_FCLKEN_PER,   pPCRM_PER_reg->CM_FCLKEN_PER ));
    RETAILMSG(1,(TEXT("CM_ICLKEN_PER          (0x%x) 0x%x\r\n\r\n"),&pPCRM_PER_reg->CM_ICLKEN_PER,   pPCRM_PER_reg->CM_ICLKEN_PER ));
    RETAILMSG(1,(TEXT("CM_IDLEST_PER          (0x%x) 0x%x\r\n\r\n"),&pPCRM_PER_reg->CM_IDLEST_PER,   pPCRM_PER_reg->CM_IDLEST_PER ));
    RETAILMSG(1,(TEXT("CM_AUTOIDLE_PER        (0x%x) 0x%x\r\n\r\n"),&pPCRM_PER_reg->CM_AUTOIDLE_PER,   pPCRM_PER_reg->CM_AUTOIDLE_PER ));

    RETAILMSG(1,(TEXT("TEMPORARY set loop back mode pUartRegs->MCR = %x\r\n"),pPdd->pUartRegs->MCR));
    SETREG8(&pPdd->pUartRegs->MCR, UART_MCR_LOOPBACK_EN);
    RETAILMSG(1,(TEXT("TEMPORARY set loop back mode pUartRegs->MCR = %x\r\n"),pPdd->pUartRegs->MCR));

    RETAILMSG(1,(TEXT("pGpio_reg->OE          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->OE,   pGpio_reg->OE ));
    RETAILMSG(1,(TEXT("pGpio_reg->DATAIN          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->DATAIN,   pGpio_reg->DATAIN ));
    RETAILMSG(1,(TEXT("pGpio_reg->WAKEUPENABLE          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->WAKEUPENABLE,   pGpio_reg->WAKEUPENABLE ));
    RETAILMSG(1,(TEXT("pGpio_reg->DEBOUNCENABLE          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->DEBOUNCENABLE,   pGpio_reg->DEBOUNCENABLE ));
    RETAILMSG(1,(TEXT("pGpio_reg->DEBOUNCINGTIME          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->DEBOUNCINGTIME,   pGpio_reg->DEBOUNCINGTIME ));
    RETAILMSG(1,(TEXT("pGpio_reg->SYSCONFIG          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->SYSCONFIG,   pGpio_reg->SYSCONFIG ));
    RETAILMSG(1,(TEXT("pGpio_reg->REVISION          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->REVISION,   pGpio_reg->REVISION ));
    RETAILMSG(1,(TEXT("pGpio_reg->CTRL          (0x%x) 0x%x\r\n\r\n"),&pGpio_reg->CTRL,   pGpio_reg->CTRL ));


}

//======================= end debug

    LeaveCriticalSection(&pPdd->hwCS);
    rc = TRUE;

cleanUp:
    DEBUGMSG(ZONE_OPEN||ZONE_FUNCTION, (L"-HWOpen(rc = %d)\r\n", rc));

    return rc;

this code used for check Pad Functional Multiplexing and Configuration regs and i trying loopbacking RX on TX.
this code executed then in my application program then calling function CreateFile()

hDrv2=CreateFile(L"COM2:",GENERIC_WRITE|GENERIC_READ,0,NULL,OPEN_EXISTING,0,NULL);

now how my application looks:
this is just simple code for sent and then read COM2.

#include "stdafx.h"
#define LEN_FOR_CHECK 20 //
#define SLEEP_TIME 1000
#define TIMEOUT 2000
int _tmain(int argc, TCHAR *argv[], TCHAR *envp[])
{

DWORD dwWritten;
DWORD dwRead;
unsigned char tcTemp1[LEN_FOR_CHECK];
DCB PortDCB;
HANDLE hDrv2;

int ErrorLevel=0;
COMMTIMEOUTS TimeOUTs;
int result;

   hDrv2=CreateFile(L"COM2:",GENERIC_WRITE|GENERIC_READ,0,NULL,OPEN_EXISTING,0,NULL);

   if (hDrv2==0)
       ErrorLevel++;


// Initialize the DCBlength member.
PortDCB.DCBlength = sizeof (DCB);

// Get the default port setting information.
GetCommState (hDrv2, &PortDCB);

// Change the DCB structure settings.
PortDCB.BaudRate = 300;              // Current baud
PortDCB.fBinary = TRUE;               // Binary mode; no EOF check
PortDCB.fParity = TRUE;               // Enable parity checking
PortDCB.fOutxCtsFlow = FALSE;         // No CTS output flow control
PortDCB.fOutxDsrFlow = FALSE;         // No DSR output flow control
PortDCB.fDtrControl = FALSE;
                                      // DTR flow control type
PortDCB.fDsrSensitivity = FALSE;      // DSR sensitivity
PortDCB.fTXContinueOnXoff = FALSE;     // XOFF continues Tx
PortDCB.fOutX = FALSE;                // No XON/XOFF out flow control
PortDCB.fInX = FALSE;                 // No XON/XOFF in flow control
PortDCB.fErrorChar = FALSE;           // Disable error replacement
PortDCB.fNull = FALSE;                // Disable null stripping
PortDCB.fRtsControl = RTS_CONTROL_TOGGLE;
                                      // RTS flow control
PortDCB.fAbortOnError = FALSE;        // Do not abort reads/writes on
                                      // error
PortDCB.ByteSize = 8;                 // Number of bits/byte, 4-8
PortDCB.Parity = 0;            // 0-4=no,odd,even,mark,space
PortDCB.StopBits = 0;        // 0,1,2 = 1, 1.5, 2

// Configure the port according to the specifications of the DCB
// structure.

if (!SetCommState (hDrv2, &PortDCB))
{
   // Could not configure the serial port.
   printf("Failed to set DCB COM2 \r\n\r\n");
   ErrorLevel++;
}
   PurgeComm(hDrv2,PURGE_TXCLEAR);

   GetCommTimeouts(hDrv2,&TimeOUTs);
   TimeOUTs.ReadIntervalTimeout=TIMEOUT;
        TimeOUTs.ReadTotalTimeoutMultiplier = 10;
        TimeOUTs.ReadTotalTimeoutConstant = 2000;

   SetCommTimeouts(hDrv2,&TimeOUTs);



   printf("TU \r\n");

   tcTemp1[0]= 0xEE;
   WriteFile(hDrv2,tcTemp1,1,&dwWritten,NULL);

   tcTemp1[0]= 0x00;
   Sleep(1000);

   result = ReadFile(hDrv2,tcTemp1,LEN_FOR_CHECK,&dwRead,NULL);

       if(result==0)
       {
       printf("Failed ReadFile COM2 \r\n");
       }

       printf("ReadFile dwRead=%d \r\n",dwRead);

   printf("tcTemp1[0] = %x \r\n",tcTemp1[0]);

   CloseHandle(hDrv2);

return 0;
}

in reginit.ini i have:

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\UART2]
   "Prefix"="COM"
   "Dll"="omap_uart.dll"
   "DeviceArrayIndex"=dword:2
   "Index"=dword:2
   "Order"=dword:9
        "MemBase"=multi_sz:"4806C000"
        "MemLen"=multi_sz:"00000400"
   "PowerFlags"=dword:00000103         ; send pre/post device state changes
   "RxBuffer" = dword:2000
   ;"TxDmaRequest"=dword:31                       ; S_DMA_48 TX DMA Request Line, use ffffffff to disable TX DMA
   "TxDmaRequest"=dword:ffffffff                 ; TxDma has issues after RX of break, disabled with ffffffff
   "TxDmaBufferSize"=dword:2000                  ; Size of DMA transmit buffer
   "RxDmaRequest"=dword:32                       ; S_DMA_49 RX DMA Request Line, use ffffffff to disable RX DMA
   "RxDmaBufferSize"=dword:2000                  ; Size of DMA receive buffer
   "RtsCtsEnable"=dword:0                        ; 1=enable RTS/CTS handshake support, 0=disable
   "HWMode"=dword:0                              ; Use hardware auto RTS/CTS
   ; PMCLASS_PMEXT_GUID, CE_DRIVER_POWER_MANAGEABLE_GENERIC_GUID
   "IClass"=multi_sz:"{0AE2066F-89A2-4D70-8FC2-29AEFA68413C}",
                      "{A32942B7-920C-486b-B0E6-92A702A99B35}"

now look on debug output and output from application:

then i first time run application i got this in telnet:

Welcome to the Windows CE Telnet Service on Compact

Pocket CMD v 7.00
\> cd nandflash
\nandflash> tc2.exe
TU
ReadFile dwRead=1
tcTemp1[0] = ee
\nandflash>

in debug teraterm (attached to UART3) i have this:

PID:00400002 TID:03070016 +COM_Open handle xCC8470E0, access xC0000000, share x0
PID:00400002 TID:03070016 COM_Open: Access permission handle granted xCD7CEA20
PID:00400002 TID:03070016 COM_Open: First open : Do Init xCD7CEA20
PID:00400002 TID:03070016 COM_Open: Starting DispatchThread xCD7CEA20
PID:00400002 TID:03070016 Initializing interrupt 0x15, 0xD90023
PID:00400002 TID:03070016 Spinning threadCC8470E0
PID:00400002 TID:03070016 Created receive thread 2D2001F
PID:00400002 TID:03070016 +HWSetDCB(0xcc847200, 0xcc847140
PID:00400002 TID:03070016 -HWSetDCB(rc = 0)
PID:00400002 TID:03070016 +HWSetCommTimeouts()
PID:00400002 TID:03070016 -HWSetCommTimeouts()
PID:00400002 TID:03070016 +HWOpen(0xcc847200)
PID:00400002 TID:03070016 HWOpen - Membase=0x4806c000
PID:00400002 TID:03070016 UART:SetPower: D0 (curDx=D3)
PID:00400002 TID:03070016 here5
PID:00400002 TID:03070016 here6
PID:00400002 TID:03070016 here7
PID:00400002 TID:03070016 +SetWordLength(8)
PID:00400002 TID:03070016 -SetWordLength()=1
PID:00400002 TID:02C2001E Entered SerialDispatchThread CC8470E0
PID:00400002 TID:02C2001E Spinning in dispatch thread CC8470E0 C4451290
PID:00400002 TID:02C2001E Event D90023, 21
PID:00400002 TID:03070016 +SetStopBits(1)
PID:00400002 TID:03070016 -SetStopBits()=1
PID:00400002 TID:03070016 +SetParity(0)
PID:00400002 TID:03070016 -SetParity()=1
PID:00400002 TID:03070016 UpdateDMARxPointer: CurrentDMALocation = 0xccc90000 nMddRxWIndex= 0xccc900
00   nMddRxRIndex= 0xccc90000
PID:00400002 TID:03070016 (bAllClear == TRUE)&& (nMddRxPosHead = nRxDmaBuffer)
PID:00400002 TID:03070016 +SetAutoIdle(1)
PID:00400002 TID:03070016 -SetAutoIdle()
PID:00400002 TID:03070016 +SetBaudRate(rate:9600,membase:0x4806c000)
PID:00400002 TID:03070016 -SetBaudRate()=1
PID:00400002 TID:03070016 +ReadModemStat()
PID:00400002 TID:03070016 -ReadModemStat(e0)
PID:00400002 TID:03070016 CONTROL_PADCONF_MCBSP3_FSX uart2_rx   (0xcd940172) 0x119
PID:00400002 TID:03070016 CONTROL_PADCONF_MCBSP3_CLKX uart2_tx     (0xcd940170) 0x1
PID:00400002 TID:03070016 CONTROL_PADCONF_MCBSP3_DR   uart2_rts     (0xcd94016e) 0x1
PID:00400002 TID:03070016 CONTROL_PADCONF_MCBSP3_DX   uart2_cts     (0xcd94016c) 0x119
PID:00400002 TID:03070016 CONTROL_PADCONF_UART2_CTS       (0xcd940174) 0x107
PID:00400002 TID:03070016 CONTROL_PADCONF_UART2_RTS        (0xcd940176) 0x107
PID:00400002 TID:03070016 CONTROL_PADCONF_UART2_TX        (0xcd940178) 0x107
PID:00400002 TID:03070016 CONTROL_PADCONF_UART2_RX        (0xcd94017a) 0x107
PID:00400002 TID:03070016 CM_FCLKEN_PER          (0xcd910000) 0x3e808

PID:00400002 TID:03070016 CM_ICLKEN_PER          (0xcd910010) 0x3e808

PID:00400002 TID:03070016 CM_IDLEST_PER          (0xcd910020) 0x17f7

PID:00400002 TID:03070016 CM_AUTOIDLE_PER        (0xcd910030) 0x3ffff

PID:00400002 TID:03070016 TEMPORARY set loop back mode pUartRegs->MCR = 0
PID:00400002 TID:03070016 TEMPORARY set loop back mode pUartRegs->MCR = 10
PID:00400002 TID:03070016 pGpio_reg->OE          (0xcd950034) 0xffffffff

PID:00400002 TID:03070016 pGpio_reg->DATAIN          (0xcd950038) 0x800

PID:00400002 TID:03070016 pGpio_reg->WAKEUPENABLE          (0xcd950020) 0x800

PID:00400002 TID:03070016 pGpio_reg->DEBOUNCENABLE          (0xcd950050) 0x0

PID:00400002 TID:03070016 pGpio_reg->DEBOUNCINGTIME          (0xcd950054) 0x0

PID:00400002 TID:03070016 pGpio_reg->SYSCONFIG          (0xcd950010) 0x15

PID:00400002 TID:03070016 pGpio_reg->REVISION          (0xcd950000) 0x25

PID:00400002 TID:03070016 pGpio_reg->CTRL          (0xcd950030) 0x2

PID:00400002 TID:02C2001E +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 8, cause = c0)
PID:00400002 TID:02C2001E SerialEventHandler, Interrupts 0x8
PID:00400002 TID:02C2001E Other Event, it:8
PID:00400002 TID:02C2001E +HWModemIntr(0xcc847200)
PID:00400002 TID:02C2001E +ReadModemStat()
PID:00400002 TID:02C2001E EvaluateEventFlag (eventMask = 0x30) - device was closed
PID:00400002 TID:02C2001E -ReadModemStat(0e)
PID:00400002 TID:02C2001E -HWModemIntr
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02C2001E SerialEventHandler, No Interrupt.
PID:00400002 TID:02C2001E -SerialEventHandler, Fifo(R=0,W=0,L=8192)
PID:00400002 TID:02C2001E Event D90023, 21
PID:00400002 TID:03070016 -HWOpen(rc = 1)
PID:00400002 TID:03070016 +HWPurgeComm(0xcc847200 0x00000008)
PID:00400002 TID:03070016 UpdateDMARxPointer: CurrentDMALocation = 0xccc90000 nMddRxWIndex= 0xccc900
00   nMddRxRIndex= 0xccc90000
PID:00400002 TID:03070016 (bAllClear == TRUE)&& (nMddRxPosHead = nRxDmaBuffer)
PID:00400002 TID:03070016 PurgeComm: Last Write Pos: 0xccc90000PID:00400002 TID:03070016 -HWPurgeCom
m
PID:00400002 TID:03070016 -COM_Open handle xCD7CEA20, xCC8470E0, Ref x1
PID:00400002 TID:03070016 +COM_IOControl(0xCD7CEA20, 1769552, 0x0, 0, 0x2FA84, 28, 0xCD6AFC64)
PID:00400002 TID:03070016 IOCTL_SERIAL_GET_DCB
PID:00400002 TID:03070016 -COM_IOControl Success Ecode=0 (len=28)
PID:00400002 TID:03070016 +COM_IOControl(0xCD7CEA20, 1769556, 0x2FA84, 28, 0x0, 0, 0xCD6AFC64)
PID:00400002 TID:03070016 IOCTL_SERIAL_SET_DCB
PID:00400002 TID:03070016 +HWSetDCB(0xcc847200, 0xcd6afaf0
PID:00400002 TID:03070016 +SetBaudRate(rate:300,membase:0x4806c000)
PID:00400002 TID:03070016 -SetBaudRate()=1
PID:00400002 TID:03070016 +SetStopBits(0)
PID:00400002 TID:03070016 -SetStopBits()=1
PID:00400002 TID:03070016 -HWSetDCB(rc = 1)
PID:00400002 TID:03070016 +HWClearDTR(0xcc847200)
PID:00400002 TID:03070016 -HWClearDTR
PID:00400002 TID:03070016 -COM_IOControl Success Ecode=31 (len=0)
PID:00400002 TID:03070016 +COM_IOControl(0xCD7CEA20, 1769540, 0x2FA14, 4, 0x0, 0, 0xCD6AFC64)
PID:00400002 TID:03070016 IOCTL_SERIAL_PURGE 0x4
PID:00400002 TID:03070016 +HWPurgeComm(0xcc847200 0x00000004)
PID:00400002 TID:03070016 -HWPurgeComm
PID:00400002 TID:03070016 -COM_IOControl Success Ecode=31 (len=0)
PID:00400002 TID:03070016 +COM_IOControl(0xCD7CEA20, 1769536, 0x0, 0, 0x2FA3C, 20, 0xCD6AFC64)
PID:00400002 TID:03070016 IOCTL_SERIAL_GET_TIMEOUTS
PID:00400002 TID:03070016 -COM_IOControl Success Ecode=31 (len=20)
PID:00400002 TID:03070016 +COM_IOControl(0xCD7CEA20, 1769532, 0x2FA3C, 20, 0x0, 0, 0xCD6AFC64)
PID:00400002 TID:03070016 IOCTL_SERIAL_SET_COMMTIMEOUTS (2000,10,2000,0,0)
PID:00400002 TID:03070016 +HWSetCommTimeouts()
PID:00400002 TID:03070016 -HWSetCommTimeouts()
PID:00400002 TID:03070016 -COM_IOControl Success Ecode=31 (len=0)
PID:03230002 TID:03070016 TEL_Open(0x39460, 0x40000000, 0x3)
PID:03230002 TID:03070016 TEL_Open(0x39460, 0x40000000, 0x3)
PID:03230002 TID:03070016 TEL_Close(0x39460)
PID:00400002 TID:03070016 +COM_WRITE(0xCD7CEA20, 0x2FA54, 1)
PID:00400002 TID:03070016 COM_Write wait for CritSec cc8470e0.
PID:00400002 TID:03070016 COM_Write Got CritSec cc8470e0.
PID:00400002 TID:03070016 COM_Write wait for CritSec cc8471b0.
PID:00400002 TID:03070016 COM_Write got CritSec cc8471b0.
PID:00400002 TID:03070016 COM_Write released CritSec: cc8471b0.
PID:00400002 TID:03070016 DoPutBytes wait for CritSec cc8471b0.
PID:00400002 TID:03070016 DoPutBytes got CritSec cc8471b0.
PID:00400002 TID:03070016 RTS set.
PID:00400002 TID:03070016 +HWSetRTS(0xcc847200)
PID:00400002 TID:03070016 HWSetRTS set RTS to 0V
PID:00400002 TID:02C2001E +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 8, cause = c0)
PID:00400002 TID:02C2001E SerialEventHandler, Interrupts 0x8
PID:00400002 TID:02C2001E Other Event, it:8
PID:00400002 TID:02C2001E +HWModemIntr(0xcc847200)
PID:00400002 TID:02C2001E +ReadModemStat()
PID:00400002 TID:02C2001E CommEvent - Event 0x8, Global Mask 0x0
PID:00400002 TID:02C2001E -ReadModemStat(11)
PID:00400002 TID:02C2001E -HWModemIntr
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02C2001E SerialEventHandler, No Interrupt.
PID:00400002 TID:02C2001E -SerialEventHandler, Fifo(R=0,W=0,L=8192)
PID:00400002 TID:02C2001E Event D90023, 21
PID:00400002 TID:03070016 -HWSetRTS
                                   PID:00400002 TID:03070016 TxRead = 0, TxLength = 1, TxBytesAvail
= 1.
PID:00400002 TID:03070016 About to copy 1 bytes
PID:00400002 TID:03070016 +HWTxIntr(0xcc847200, 0xc4473bb0, 1)
PID:00400002 TID:03070016 +SetAutoIdle(1)
PID:00400002 TID:03070016 -SetAutoIdle()
PID:00400002 TID:03070016 +SetAutoIdle(0)
PID:00400002 TID:03070016 -SetAutoIdle()
PID:00400002 TID:03070016 -HWTxIntr(*pLength = 1)
PID:00400002 TID:03070016 1 bytes actually copied.
PID:00400002 TID:03070016 DoPutBytes released CritSec: cc8471b0.
PID:00400002 TID:03070016 COM_Write wait for transmission complete event db0023.
PID:00400002 TID:02C2001E +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 4, cause = c2)
PID:00400002 TID:02C2001E SerialEventHandler, Interrupts 0x4
PID:00400002 TID:02C2001E Tx Event
PID:00400002 TID:02C2001E DoPutBytes wait for CritSec cc8471b0.
PID:00400002 TID:02C2001E DoPutBytes got CritSec cc8471b0.
PID:00400002 TID:02C2001E +HWTxIntr(0xcc847200, 0x00000000, 0)
PID:00400002 TID:02C2001E +SetAutoIdle(1)
PID:00400002 TID:02C2001E -SetAutoIdle()
PID:00400002 TID:02C2001E +SetAutoIdle(0)
PID:00400002 TID:02C2001E -SetAutoIdle()
PID:00400002 TID:02C2001E -HWTxIntr(*pLength = 0)
PID:00400002 TID:02C2001E Transmission complete, 0 bytes sent
PID:00400002 TID:02C2001E DoPutBytes released CritSec: cc8471b0.
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02C2001E SerialEventHandler, No Interrupt.
PID:00400002 TID:02C2001E -SerialEventHandler, Fifo(R=0,W=0,L=8192)
PID:00400002 TID:02C2001E Event D90023, 21
PID:00400002 TID:03070016 COM_Write completed normally.
PID:00400002 TID:03070016 COM_Write wait for CritSec cc8471b0.
PID:00400002 TID:03070016 COM_Write got CritSec cc8471b0.
PID:00400002 TID:03070016 COM_Write released CritSec: cc8471b0.
PID:00400002 TID:03070016 COM_Write released CritSec: cc8470e0. Exiting
PID:00400002 TID:03070016 CommEvent - Event 0x4, Global Mask 0x0
PID:00400002 TID:03070016 +HWClearRTS(0xcc847200)
PID:00400002 TID:03070016 HWClearRTS set RTS to 3.3V
PID:00400002 TID:02C2001E +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E +SetAutoIdle(0)
PID:00400002 TID:02C2001E -SetAutoIdle()
PID:00400002 TID:02C2001E UpdateDMARxPointer: CurrentDMALocation = 0xccc90001 nMddRxWIndex= 0xccc900
00   nMddRxRIndex= 0xccc90000
PID:00400002 TID:02C2001E (nStartPos < (nRxDmaBuffer + pPdd->RxDmaBufferSize))&&(nStartPos > nMddRxP
osHead)
PID:00400002 TID:02C2001E +HWGetInterruptType Starting DMA
PID:00400002 TID:02C2001E +SetAutoIdle(1)
PID:00400002 TID:02C2001E -SetAutoIdle()
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 2, cause = cc)
PID:00400002 TID:02C2001E SerialEventHandler, Interrupts 0x2
PID:00400002 TID:02C2001E Rx Event
PID:00400002 TID:02C2001E +HWRxIntr(0xcc847200, 0xccc90000, 8191)
PID:00400002 TID:02C2001E +HWRxDMAIntr Count= 1
PID:00400002 TID:02C2001E +ReadLineStat()
PID:00400002 TID:02C2001E -ReadLineStat(60)
PID:00400002 TID:02C2001E -HWRxIntr(count = 0, length = 1)
PID:00400002 TID:02C2001E After HWGetBytes, Fifo(R=0,W=0,BA=0,L=8192) ByteRead=1
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 8, cause = c0)
PID:00400002 TID:02C2001E SerialEventHandler, Interrupts 0x8
PID:00400002 TID:02C2001E Other Event, it:8
PID:00400002 TID:02C2001E +HWModemIntr(0xcc847200)
PID:00400002 TID:02C2001E +ReadModemStat()
PID:00400002 TID:02C2001E CommEvent - Event 0x8, Global Mask 0x0
PID:00400002 TID:02C2001E -ReadModemStat(01)
PID:00400002 TID:02C2001E -HWModemIntr
PID:00400002 TID:02C2001E +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C2001E -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02C2001E SerialEventHandler, No Interrupt.
PID:00400002 TID:02C2001E CommEvent - Event 0x1, Global Mask 0x0
PID:00400002 TID:02C2001E -SerialEventHandler, Fifo(R=0,W=1,L=8192)
PID:00400002 TID:02C2001E Event D90023, 21
PID:00400002 TID:03070016 -HWClearRTS
PID:00400002 TID:03070016 -COM_WRITE, returning 1
PID:00400002 TID:03070016 +COM_READ(0xCD7CEA20,0x2FA54,20)
PID:00400002 TID:03070016 TotalTimeout:2200
PID:00400002 TID:03070016 Top of Loop Fifo(R=0,W=1,L=8192,BA=1)
PID:00400002 TID:03070016 About to copy 1 bytes
PID:00400002 TID:03070016 Top of Loop Fifo(R=1,W=1,L=8192,BA=0)
PID:00400002 TID:03070016 About to wait 2080ms
PID:00400002 TID:03070016 Top of Loop Fifo(R=1,W=1,L=8192,BA=0)
PID:00400002 TID:03070016 About to wait 2080ms
PID:00400002 TID:03070016 ReceiveBytes exiting
PID:00400002 TID:03070016 -COM_READ: returning 1 (total 1, dropped 0,0)
PID:00400002 TID:03070016 COM_PreClose: 0 users in MDD functions
PID:00400002 TID:03070016 COM_PreClose: serial users to exit, 0 left
PID:00400002 TID:03070016 -COM_PreClose
PID:00400002 TID:03070016 +COM_Close
PID:00400002 TID:03070016 COM_Close: (0 handles) total RX 1, total TX 1, dropped (mdd, pdd) 0,0
PID:00400002 TID:03070016 About to call HWClose
PID:00400002 TID:03070016 +HWClose(0xcc847200)
PID:00400002 TID:03070016 +ReadModemStat()
PID:00400002 TID:03070016 -ReadModemStat(00)
PID:00400002 TID:03070016 UART:SetPower: D3 (curDx=D0)
PID:00400002 TID:03070016 here1
PID:00400002 TID:03070016 here2
PID:00400002 TID:03070016 here3
PID:00400002 TID:03070016 here4
PID:00400002 TID:03070016 -HWClose(0)
PID:00400002 TID:03070016 Returned from HWClose
PID:00400002 TID:03070016 COM_Close : Stopping Dispatch Thread
PID:00400002 TID:03070016
Trying to close dispatch thread
PID:00400002 TID:03070016
Trying to signal serial thread.
PID:00400002 TID:02C2001E +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02C2001E Exitting thread
PID:00400002 TID:03070016
Trying to call CloseHandle
PID:00400002 TID:03070016
Returned from CloseHandle
PID:00400002 TID:03070016 COM_Close: Closed access owner handle
PID:00400002 TID:03070016 -COM_Close
PID:02CB000E TID:03070016 Dll list:
PID:03230002 TID:03070016 TEL_Close(0x39460)
PID:00400002 TID:03070016 RSL_Close: (0 handles) total RX 0, total TX 0, dropped (mdd, pdd) 0,0

then i second time call my test applicatio i have this in telnet:
\nandflash> tc2.exe
TU
ReadFile dwRead=0
tcTemp1[0] = 0
\nandflash>

We have not received anything! Why?
in debug i have this:

PID:00400002 TID:02C0001E +COM_Open handle xCC8470E0, access xC0000000, share x0
PID:00400002 TID:02C0001E COM_Open: Access permission handle granted xCD7CEAD0
PID:00400002 TID:02C0001E COM_Open: First open : Do Init xCD7CEAD0
PID:00400002 TID:02C0001E COM_Open: Starting DispatchThread xCD7CEAD0
PID:00400002 TID:02C0001E Initializing interrupt 0x15, 0xD90023
PID:00400002 TID:02C0001E Spinning threadCC8470E0
PID:00400002 TID:02C0001E Created receive thread 2670027
PID:00400002 TID:02C0001E +HWSetDCB(0xcc847200, 0xcc847140
PID:00400002 TID:02C0001E -HWSetDCB(rc = 0)
PID:00400002 TID:02C0001E +HWSetCommTimeouts()
PID:00400002 TID:02C0001E -HWSetCommTimeouts()
PID:00400002 TID:02C0001E +HWOpen(0xcc847200)
PID:00400002 TID:02C0001E HWOpen - Membase=0x4806c000
PID:00400002 TID:02C0001E UART:SetPower: D0 (curDx=D3)
PID:00400002 TID:02C0001E here5
PID:00400002 TID:02C0001E here6
PID:00400002 TID:02C0001E here7
PID:00400002 TID:02C0001E +SetWordLength(8)
PID:00400002 TID:02C0001E -SetWordLength()=1
PID:00400002 TID:02C0001E +SetStopBits(1)
PID:00400002 TID:02E0001A Entered SerialDispatchThread CC8470E0
PID:00400002 TID:02E0001A Spinning in dispatch thread CC8470E0 C4451290
PID:00400002 TID:02E0001A Event D90023, 21
PID:00400002 TID:02E0001A +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C0001E -SetStopBits()=1
PID:00400002 TID:02C0001E +SetParity(0)
PID:00400002 TID:02C0001E -SetParity()=1
PID:00400002 TID:02C0001E UpdateDMARxPointer: CurrentDMALocation = 0xccc90000 nMddRxWIndex= 0xccc900
01   nMddRxRIndex= 0xccc90001
PID:00400002 TID:02C0001E (nStartPos < nMddRxPosHead)
PID:00400002 TID:02C0001E +SetAutoIdle(1)
PID:00400002 TID:02C0001E -SetAutoIdle()
PID:00400002 TID:02C0001E +SetBaudRate(rate:9600,membase:0x4806c000)
PID:00400002 TID:02C0001E -SetBaudRate()=1
PID:00400002 TID:02C0001E +ReadModemStat()
PID:00400002 TID:02C0001E EvaluateEventFlag (eventMask = 0x30) - device was closed
PID:00400002 TID:02C0001E -ReadModemStat(ea)
PID:00400002 TID:02C0001E CONTROL_PADCONF_MCBSP3_FSX uart2_rx   (0xcd990172) 0x119
PID:00400002 TID:02C0001E CONTROL_PADCONF_MCBSP3_CLKX uart2_tx     (0xcd990170) 0x1
PID:00400002 TID:02C0001E CONTROL_PADCONF_MCBSP3_DR   uart2_rts     (0xcd99016e) 0x1
PID:00400002 TID:02C0001E CONTROL_PADCONF_MCBSP3_DX   uart2_cts     (0xcd99016c) 0x119
PID:00400002 TID:02C0001E CONTROL_PADCONF_UART2_CTS       (0xcd990174) 0x107
PID:00400002 TID:02C0001E CONTROL_PADCONF_UART2_RTS        (0xcd990176) 0x107
PID:00400002 TID:02C0001E CONTROL_PADCONF_UART2_TX        (0xcd990178) 0x107
PID:00400002 TID:02C0001E CONTROL_PADCONF_UART2_RX        (0xcd99017a) 0x107
PID:00400002 TID:02C0001E CM_FCLKEN_PER          (0xcd8f0000) 0x3e808

PID:00400002 TID:02C0001E CM_ICLKEN_PER          (0xcd8f0010) 0x3e808

PID:00400002 TID:02C0001E CM_IDLEST_PER          (0xcd8f0020) 0x17f7

PID:00400002 TID:02C0001E CM_AUTOIDLE_PER        (0xcd8f0030) 0x3ffff

PID:00400002 TID:02C0001E TEMPORARY set loop back mode pUartRegs->MCR = 0
PID:00400002 TID:02C0001E TEMPORARY set loop back mode pUartRegs->MCR = 10
PID:00400002 TID:02C0001E pGpio_reg->OE          (0xcd9a0034) 0xffffffff

PID:00400002 TID:02C0001E pGpio_reg->DATAIN          (0xcd9a0038) 0x800

PID:00400002 TID:02C0001E pGpio_reg->WAKEUPENABLE          (0xcd9a0020) 0x800

PID:00400002 TID:02C0001E pGpio_reg->DEBOUNCENABLE          (0xcd9a0050) 0x0

PID:00400002 TID:02C0001E pGpio_reg->DEBOUNCINGTIME          (0xcd9a0054) 0x0

PID:00400002 TID:02C0001E pGpio_reg->SYSCONFIG          (0xcd9a0010) 0x15

PID:00400002 TID:02C0001E pGpio_reg->REVISION          (0xcd9a0000) 0x25

PID:00400002 TID:02C0001E pGpio_reg->CTRL          (0xcd9a0030) 0x2

PID:00400002 TID:02E0001A -HWGetInterruptType(type = 8, cause = c0)
PID:00400002 TID:02E0001A SerialEventHandler, Interrupts 0x8
PID:00400002 TID:02E0001A Other Event, it:8
PID:00400002 TID:02E0001A +HWModemIntr(0xcc847200)
PID:00400002 TID:02E0001A +ReadModemStat()
PID:00400002 TID:02E0001A EvaluateEventFlag (eventMask = 0x30) - device was closed
PID:00400002 TID:02E0001A -ReadModemStat(0e)
PID:00400002 TID:02E0001A -HWModemIntr
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02E0001A SerialEventHandler, No Interrupt.
PID:00400002 TID:02E0001A -SerialEventHandler, Fifo(R=1,W=1,L=8192)
PID:00400002 TID:02E0001A Event D90023, 21
PID:00400002 TID:02E0001A +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02C0001E -HWOpen(rc = 1)
PID:00400002 TID:02C0001E +HWPurgeComm(0xcc847200 0x00000008)
PID:00400002 TID:02C0001E UpdateDMARxPointer: CurrentDMALocation = 0xccc90000 nMddRxWIndex= 0xccc900
01   nMddRxRIndex= 0xccc90001
PID:00400002 TID:02C0001E (nStartPos < nMddRxPosHead)
PID:00400002 TID:02C0001E PurgeComm: Last Write Pos: 0xccc90000PID:00400002 TID:02C0001E -HWPurgeCom
m
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02E0001A SerialEventHandler, No Interrupt.
PID:00400002 TID:02E0001A -SerialEventHandler, Fifo(R=1,W=1,L=8192)
PID:00400002 TID:02E0001A Event D90023, 21
PID:00400002 TID:02C0001E -COM_Open handle xCD7CEAD0, xCC8470E0, Ref x1
PID:00400002 TID:02C0001E +COM_IOControl(0xCD7CEAD0, 1769552, 0x0, 0, 0x2FA84, 28, 0xCD81FC64)
PID:00400002 TID:02C0001E IOCTL_SERIAL_GET_DCB
PID:00400002 TID:02C0001E -COM_IOControl Success Ecode=0 (len=28)
PID:00400002 TID:02C0001E +COM_IOControl(0xCD7CEAD0, 1769556, 0x2FA84, 28, 0x0, 0, 0xCD81FC64)
PID:00400002 TID:02C0001E IOCTL_SERIAL_SET_DCB
PID:00400002 TID:02C0001E +HWSetDCB(0xcc847200, 0xcd81faf0
PID:00400002 TID:02C0001E +SetBaudRate(rate:300,membase:0x4806c000)
PID:00400002 TID:02C0001E -SetBaudRate()=1
PID:00400002 TID:02C0001E +SetStopBits(0)
PID:00400002 TID:02C0001E -SetStopBits()=1
PID:00400002 TID:02C0001E -HWSetDCB(rc = 1)
PID:00400002 TID:02C0001E +HWClearDTR(0xcc847200)
PID:00400002 TID:02C0001E -HWClearDTR
PID:00400002 TID:02C0001E -COM_IOControl Success Ecode=31 (len=0)
PID:00400002 TID:02C0001E +COM_IOControl(0xCD7CEAD0, 1769540, 0x2FA14, 4, 0x0, 0, 0xCD81FC64)
PID:00400002 TID:02C0001E IOCTL_SERIAL_PURGE 0x4
PID:00400002 TID:02C0001E +HWPurgeComm(0xcc847200 0x00000004)
PID:00400002 TID:02C0001E -HWPurgeComm
PID:00400002 TID:02C0001E -COM_IOControl Success Ecode=31 (len=0)
PID:00400002 TID:02C0001E +COM_IOControl(0xCD7CEAD0, 1769536, 0x0, 0, 0x2FA3C, 20, 0xCD81FC64)
PID:00400002 TID:02C0001E IOCTL_SERIAL_GET_TIMEOUTS
PID:00400002 TID:02C0001E -COM_IOControl Success Ecode=31 (len=20)
PID:00400002 TID:02C0001E +COM_IOControl(0xCD7CEAD0, 1769532, 0x2FA3C, 20, 0x0, 0, 0xCD81FC64)
PID:00400002 TID:02C0001E IOCTL_SERIAL_SET_COMMTIMEOUTS (2000,10,2000,0,0)
PID:00400002 TID:02C0001E +HWSetCommTimeouts()
PID:00400002 TID:02C0001E -HWSetCommTimeouts()
PID:00400002 TID:02C0001E -COM_IOControl Success Ecode=31 (len=0)
PID:03230002 TID:02C0001E TEL_Open(0x39460, 0x40000000, 0x3)
PID:03230002 TID:02C0001E TEL_Open(0x39460, 0x40000000, 0x3)
PID:03230002 TID:02C0001E TEL_Close(0x39460)
PID:00400002 TID:02C0001E +COM_WRITE(0xCD7CEAD0, 0x2FA54, 1)
PID:00400002 TID:02C0001E COM_Write wait for CritSec cc8470e0.
PID:00400002 TID:02C0001E COM_Write Got CritSec cc8470e0.
PID:00400002 TID:02C0001E COM_Write wait for CritSec cc8471b0.
PID:00400002 TID:02C0001E COM_Write got CritSec cc8471b0.
PID:00400002 TID:02C0001E COM_Write released CritSec: cc8471b0.
PID:00400002 TID:02C0001E DoPutBytes wait for CritSec cc8471b0.
PID:00400002 TID:02C0001E DoPutBytes got CritSec cc8471b0.
PID:00400002 TID:02C0001E RTS set.
PID:00400002 TID:02C0001E +HWSetRTS(0xcc847200)
PID:00400002 TID:02C0001E HWSetRTS set RTS to 0V
PID:00400002 TID:02E0001A +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 8, cause = c0)
PID:00400002 TID:02E0001A SerialEventHandler, Interrupts 0x8
PID:00400002 TID:02E0001A Other Event, it:8
PID:00400002 TID:02E0001A +HWModemIntr(0xcc847200)
PID:00400002 TID:02E0001A +ReadModemStat()
PID:00400002 TID:02E0001A CommEvent - Event 0x8, Global Mask 0x0
PID:00400002 TID:02E0001A -ReadModemStat(11)
PID:00400002 TID:02E0001A -HWModemIntr
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02E0001A SerialEventHandler, No Interrupt.
PID:00400002 TID:02E0001A -SerialEventHandler, Fifo(R=0,W=0,L=8192)
PID:00400002 TID:02E0001A Event D90023, 21
PID:00400002 TID:02C0001E -HWSetRTS
                                   PID:00400002 TID:02C0001E TxRead = 0, TxLength = 1, TxBytesAvail
= 1.
PID:00400002 TID:02C0001E About to copy 1 bytes
PID:00400002 TID:02C0001E +HWTxIntr(0xcc847200, 0xc4473bb0, 1)
PID:00400002 TID:02C0001E +SetAutoIdle(1)
PID:00400002 TID:02C0001E -SetAutoIdle()
PID:00400002 TID:02C0001E +SetAutoIdle(0)
PID:00400002 TID:02C0001E -SetAutoIdle()
PID:00400002 TID:02C0001E -HWTxIntr(*pLength = 1)
PID:00400002 TID:02C0001E 1 bytes actually copied.
PID:00400002 TID:02C0001E DoPutBytes released CritSec: cc8471b0.
PID:00400002 TID:02C0001E COM_Write wait for transmission complete event db0023.
PID:00400002 TID:02E0001A +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 4, cause = c2)
PID:00400002 TID:02E0001A SerialEventHandler, Interrupts 0x4
PID:00400002 TID:02E0001A Tx Event
PID:00400002 TID:02E0001A DoPutBytes wait for CritSec cc8471b0.
PID:00400002 TID:02E0001A DoPutBytes got CritSec cc8471b0.
PID:00400002 TID:02E0001A +HWTxIntr(0xcc847200, 0x00000000, 0)
PID:00400002 TID:02E0001A +SetAutoIdle(1)
PID:00400002 TID:02E0001A -SetAutoIdle()
PID:00400002 TID:02E0001A +SetAutoIdle(0)
PID:00400002 TID:02E0001A -SetAutoIdle()
PID:00400002 TID:02E0001A -HWTxIntr(*pLength = 0)
PID:00400002 TID:02E0001A Transmission complete, 0 bytes sent
PID:00400002 TID:02E0001A DoPutBytes released CritSec: cc8471b0.
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02E0001A SerialEventHandler, No Interrupt.
PID:00400002 TID:02E0001A -SerialEventHandler, Fifo(R=0,W=0,L=8192)
PID:00400002 TID:02E0001A Event D90023, 21
PID:00400002 TID:02C0001E COM_Write completed normally.
PID:00400002 TID:02C0001E COM_Write wait for CritSec cc8471b0.
PID:00400002 TID:02C0001E COM_Write got CritSec cc8471b0.
PID:00400002 TID:02C0001E COM_Write released CritSec: cc8471b0.
PID:00400002 TID:02C0001E COM_Write released CritSec: cc8470e0. Exiting
PID:00400002 TID:02C0001E CommEvent - Event 0x4, Global Mask 0x0
PID:00400002 TID:02C0001E +HWClearRTS(0xcc847200)
PID:00400002 TID:02C0001E HWClearRTS set RTS to 3.3V
PID:00400002 TID:02E0001A +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 8, cause = c0)
PID:00400002 TID:02E0001A SerialEventHandler, Interrupts 0x8
PID:00400002 TID:02E0001A Other Event, it:8
PID:00400002 TID:02E0001A +HWModemIntr(0xcc847200)
PID:00400002 TID:02E0001A +ReadModemStat()
PID:00400002 TID:02E0001A CommEvent - Event 0x8, Global Mask 0x0
PID:00400002 TID:02E0001A -ReadModemStat(01)
PID:00400002 TID:02E0001A -HWModemIntr
PID:00400002 TID:02E0001A +HWGetInterruptType(0xcc847200)
PID:00400002 TID:02E0001A -HWGetInterruptType(type = 0, cause = c1)
PID:00400002 TID:02E0001A SerialEventHandler, No Interrupt.
PID:00400002 TID:02E0001A -SerialEventHandler, Fifo(R=0,W=0,L=8192)
PID:00400002 TID:02E0001A Event D90023, 21
PID:00400002 TID:02C0001E -HWClearRTS
PID:00400002 TID:02C0001E -COM_WRITE, returning 1
PID:00400002 TID:02C0001E +COM_READ(0xCD7CEAD0,0x2FA54,20)
PID:00400002 TID:02C0001E TotalTimeout:2200
PID:00400002 TID:02C0001E Top of Loop Fifo(R=0,W=0,L=8192,BA=0)
PID:00400002 TID:02C0001E About to wait 2200ms
PID:00400002 TID:02C0001E Top of Loop Fifo(R=0,W=0,L=8192,BA=0)
PID:00400002 TID:02C0001E About to wait 2196ms
PID:00400002 TID:02C0001E ReceiveBytes exiting
PID:00400002 TID:02C0001E -COM_READ: returning 0 (total 0, dropped 0,0)
PID:00400002 TID:02C0001E COM_PreClose: 0 users in MDD functions
PID:00400002 TID:02C0001E COM_PreClose: serial users to exit, 0 left
PID:00400002 TID:02C0001E -COM_PreClose
PID:00400002 TID:02C0001E +COM_Close
PID:00400002 TID:02C0001E COM_Close: (0 handles) total RX 0, total TX 1, dropped (mdd, pdd) 0,0
PID:00400002 TID:02C0001E About to call HWClose
PID:00400002 TID:02C0001E +HWClose(0xcc847200)
PID:00400002 TID:02C0001E +ReadModemStat()
PID:00400002 TID:02C0001E -ReadModemStat(00)
PID:00400002 TID:02C0001E UART:SetPower: D3 (curDx=D0)
PID:00400002 TID:02C0001E here1
PID:00400002 TID:02C0001E here2
PID:00400002 TID:02C0001E here3
PID:00400002 TID:02C0001E here4
PID:00400002 TID:02C0001E -HWClose(0)
PID:00400002 TID:02C0001E Returned from HWClose
PID:00400002 TID:02C0001E COM_Close : Stopping Dispatch Thread
PID:00400002 TID:02C0001E
Trying to close dispatch thread
PID:00400002 TID:02C0001E
Trying to signal serial thread.
PID:00400002 TID:02E0001A +SerialEventHandler, pHead 0xCC8470E0
PID:00400002 TID:02E0001A Exitting thread
PID:00400002 TID:02C0001E
Trying to call CloseHandle
PID:00400002 TID:02C0001E
Returned from CloseHandle
PID:00400002 TID:02C0001E COM_Close: Closed access owner handle
PID:00400002 TID:02C0001E -COM_Close
PID:013D0022 TID:02C0001E Dll list:
PID:03230002 TID:02C0001E TEL_Close(0x39460)
PID:00400002 TID:02C0001E RSL_Close: (0 handles) total RX 0, total TX 0, dropped (mdd, pdd) 0,0

and loopbacking not working any more.
if i remaked application like this:

while(1){
   tcTemp1[0]= 0xEE;
   WriteFile(hDrv2,tcTemp1,1,&dwWritten,NULL);

   tcTemp1[0]= 0x00;
   Sleep(1000);

   result = ReadFile(hDrv2,tcTemp1,LEN_FOR_CHECK,&dwRead,NULL);

       if(result==0)
       {
       printf("Failed ReadFile COM2 \r\n");
       }

       printf("ReadFile dwRead=%d \r\n",dwRead);

   printf("tcTemp1[0] = %x \r\n",tcTemp1[0]);
   }

telnet output:

Welcome to the Windows CE Telnet Service on Compact

Pocket CMD v 7.00
\> cd nandflash
\nandflash> tc2l.exe
TU
ReadFile dwRead=1
tcTemp1[0] = ee
ReadFile dwRead=1
tcTemp1[0] = ee
ReadFile dwRead=1
tcTemp1[0] = ee


This is WORKING =). Looks like COM_Close() are broke driver. or driver just not reinited on COM_Open() properly.

Any help? TY.


i am attach my test applications tc2.exe and tc2l.exe
You can just try it by short RX on TX by external wire on you com port 2
You need short 2 pin on 3 pin on DB9.
Or you can add SETREG8(&pPdd->pUartRegs->MCR, UART_MCR_LOOPBACK_EN);
in driver code.

0 Andrew Efremov over 13 years ago in reply to Andrew Efremov

Prodigy 120 points

i fix it

need add code for reinit RxDMA in HWOpen.

like this:

   if (pPdd->open) goto cleanUp;

    // We have set hardware to D0
    pPdd->externalDX = D0;
    SetPower(pPdd, D0);

//================
//EAI ADDON

        // Rx DMA configuration settings
    InitializeRxDMA(pPdd);
    EnterCriticalSection(&pPdd->hwCS);

    pPdd->bRxDMASignaled = 0;
    pPdd->bRxWrapped     = FALSE;
    pPdd->pRxDMALastWrite = 0;
    pPdd->bDmaInitialize = FALSE;

RETAILMSG(1, (L"HWInit: pPdd->UARTIndex: 0x%08x\r\n", pPdd->UARTIndex));
RETAILMSG(1, (L"HWInit: pPdd->memBase[0]: 0x%08x\r\n", pPdd->memBase[0]));
RETAILMSG(1, (L"HWInit: pPdd->irq: 0x%08x\r\n", pPdd->irq));
RETAILMSG(1, (L"HWInit: pPdd->pUartRegs 0x%08x\r\n", pPdd->pUartRegs));

    InitializeUART(pPdd);

    LeaveCriticalSection(&pPdd->hwCS);

//EAI
//================

   SetDefaultDCB(pPdd);

    pPdd->commErrors    = 0;
    pPdd->overrunCount = 0;
    pPdd->flowOffCTS    = FALSE;
    pPdd->flowOffDSR    = FALSE;
    pPdd->addTxIntr     = FALSE;
    pPdd->open          = TRUE;
    pPdd->wakeUpMode    = FALSE;
    pPdd->RxTxRefCount = 0;
    pPdd->bExitPowerThread = FALSE;

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