apci1710_inccpt.c

最新版comedi的源码

	/**************************/
	/* Test the module number */
	/**************************/

	if (b_ModulNbr < 4)
	   {
	   /*******************************/
	   /* Test if counter initialised */
	   /*******************************/

	   if (devpriv->
	       s_ModuleInfo [b_ModulNbr].
	       s_SiemensCounterInfo.
	       s_InitFlag.
	       b_CounterInit == 1)
	      {
	      /**************************************/
	      /* Test the external strobe selection */
              /**************************************/

	      if (b_ExternalStrobe == 0 || b_ExternalStrobe == 1)
		 {
		 /******************/
		 /* Test the level */
		 /******************/

		 if ((b_ExternalStrobeLevel == APCI1710_HIGH) ||
		     ((b_ExternalStrobeLevel == APCI1710_LOW && (devpriv->
								 s_BoardInfos.
								 dw_MolduleConfiguration [b_ModulNbr] & 0xFFFF) >= 0x3135)))
		    {
		    /*****************/
		    /* Set the level */
		    /*****************/

		    devpriv->
		    s_ModuleInfo [b_ModulNbr].
		    s_SiemensCounterInfo.
		    s_ModeRegister.
		    s_ByteModeRegister.
		    b_ModeRegister4 = (devpriv->
				       s_ModuleInfo [b_ModulNbr].
				       s_SiemensCounterInfo.
				       s_ModeRegister.
				       s_ByteModeRegister.
				       b_ModeRegister4 & (0xFF - (0x10 << b_ExternalStrobe))) |
				       ((b_ExternalStrobeLevel^1) << (4 + b_ExternalStrobe));
		    }
		 else
		    {
		    /********************************************/
		    /* External strobe level parameter is wrong */
		    /********************************************/

			DPRINTK("External strobe level parameter is wrong\n");
		    i_ReturnValue = -5;
		    }
		 } // if (b_ExternalStrobe == 0 || b_ExternalStrobe == 1)
	      else
		 {
		 /**************************************/
		 /* External strobe selection is wrong */
		 /**************************************/

		 DPRINTK("External strobe selection is wrong\n");
		 i_ReturnValue = -4;
		 } // if (b_ExternalStrobe == 0 || b_ExternalStrobe == 1)
	      }
	   else
	      {
	      /****************************************/
	      /* Counter not initialised see function */
	      /* "i_APCI1710_InitCounter"             */
	      /****************************************/

	      DPRINTK("Counter not initialised\n");	
	      i_ReturnValue = -3;
	      }
	   }
	else
	   {
	   /*************************************************/
	   /* The selected module number parameter is wrong */
	   /*************************************************/

	   DPRINTK("The selected module number parameter is wrong\n");	
	   i_ReturnValue = -2;
	   }

	return (i_ReturnValue);
	}


	/*
+----------------------------------------------------------------------------+
| Function Name     : _INT_ i_APCI1710_InitCompareLogic                      |
|                               (BYTE_   b_BoardHandle,                      |
|                                BYTE_   b_ModulNbr,                         |
|                                UINT_  ui_CompareValue)                     |
+----------------------------------------------------------------------------+
| Task              : Set the 32-Bit compare value. At that moment that the  |
|                     incremental counter arrive to the compare value        |
|                     (ui_CompareValue) a interrupt is generated.            |
+----------------------------------------------------------------------------+
| Input Parameters  : BYTE_  b_BoardHandle    : Handle of board APCI-1710    |
|                     BYTE_  b_ModulNbr       : Module number to configure   |
|                                               (0 to 3)                     |
|                     UINT_ ui_CompareValue   : 32-Bit compare value         |
+----------------------------------------------------------------------------+
| Output Parameters : -
+----------------------------------------------------------------------------+
| Return Value      :  0: No error                                           |
|                     -1: The handle parameter of the board is wrong         |
|                     -2: No counter module found                            |
|                     -3: Counter not initialised see function               |
|                         "i_APCI1710_InitCounter"                           |
+----------------------------------------------------------------------------+
*/

INT   i_APCI1710_InitCompareLogic     (comedi_device *dev,
					 BYTE   b_ModulNbr,
					 UINT  ui_CompareValue)
	{
	INT    i_ReturnValue = 0;
	

	/**************************/
	/* Test the module number */
	/**************************/

	if (b_ModulNbr < 4)
	   {
	   /*******************************/
	   /* Test if counter initialised */
	   /*******************************/

	   if (devpriv->
	       s_ModuleInfo [b_ModulNbr].
	       s_SiemensCounterInfo.
	       s_InitFlag.
	       b_CounterInit == 1)
	      {
	      
		   outl(ui_CompareValue,devpriv->s_BoardInfos.
		      ui_Address + 28 + (64 * b_ModulNbr));

	      devpriv->
	      s_ModuleInfo [b_ModulNbr].
	      s_SiemensCounterInfo.
	      s_InitFlag.
	      b_CompareLogicInit = 1;
	      }
	   else
	      {
	      /****************************************/
	      /* Counter not initialised see function */
	      /* "i_APCI1710_InitCounter"             */
	      /****************************************/

	      DPRINTK("Counter not initialised\n");  	
	      i_ReturnValue = -3;
	      }
	   }
	else
	   {
	   /*************************************************/
	   /* The selected module number parameter is wrong */
	   /*************************************************/

	   DPRINTK("The selected module number parameter is wrong\n");	
	   i_ReturnValue = -2;
	   }

	return (i_ReturnValue);
	}


/*
+----------------------------------------------------------------------------+
| Function Name     : _INT_ i_APCI1710_InitFrequencyMeasurement              |
|				(BYTE_		 b_BoardHandle,              |
|				 BYTE_		 b_ModulNbr,                 |
|				 BYTE_		 b_PCIInputClock,            |
|				 BYTE_		 b_TimingUnity,              |
|				 ULONG_ 	ul_TimingInterval,           |
|				 PULONG_       pul_RealTimingInterval)       |
+----------------------------------------------------------------------------+
| Task              : Sets the time for the frequency measurement.           |
|		      Configures the selected TOR incremental counter of the |
|		      selected module (b_ModulNbr). The ul_TimingInterval and|
|		      ul_TimingUnity determine the time base for the         |
|		      measurement. The pul_RealTimingInterval returns the    |
|		      real time value. You must call up this function before |
|		      you call up any other function which gives access to   |
|		      the frequency measurement.                             |
+----------------------------------------------------------------------------+
| Input Parameters  : BYTE_  b_BoardHandle    : Handle of board APCI-1710    |
|		      BYTE_  b_ModulNbr	      :	Number of the module to be   |
|						configured (0 to 3)          |
|		      BYTE_  b_PCIInputClock  :	Selection of the PCI bus     |
|						clock                        |
|						- APCI1710_30MHZ :           |
|						  The PC has a PCI bus clock |
|						  of 30 MHz                  |
|						- APCI1710_33MHZ :           |
|						  The PC has a PCI bus clock |
|						  of 33 MHz                  |
|		      BYTE_  b_TimingUnity    : Base time unit (0 to 2)      |
|						  0 : ns                     |
|						  1 : æs                     |
|						  2 : ms                     |
|		      ULONG_ ul_TimingInterval: Base time value.             |
+----------------------------------------------------------------------------+
| Output Parameters : PULONG_ pul_RealTimingInterval : Real base time value. |
+----------------------------------------------------------------------------+
| Return Value      :  0: No error                                           |
|                     -1: The handle parameter of the board is wrong         |
|                     -2: The selected module number is wrong                |
|                     -3: Counter not initialised see function               |
|			  "i_APCI1710_InitCounter"                           |
|                     -4: The selected PCI input clock is wrong              |
|                     -5: Timing unity selection is wrong                    |
|                     -6: Base timing selection is wrong                     |
|		      -7: 40MHz quartz not on board                          |
+----------------------------------------------------------------------------+
*/

INT	i_APCI1710_InitFrequencyMeasurement	(comedi_device *dev,
						 BYTE		 b_ModulNbr,
						 BYTE		 b_PCIInputClock,
						 BYTE		 b_TimingUnity,
						 ULONG 		 ul_TimingInterval,
						 PULONG      pul_RealTimingInterval)
	{
	INT    i_ReturnValue = 0;
	ULONG ul_TimerValue  = 0;
	double d_RealTimingInterval;
	DWORD dw_Status      = 0;
	
	/**************************/
	/* Test the module number */
	/**************************/

	if (b_ModulNbr < 4)
	   {
	   /*******************************/
	   /* Test if counter initialised */
	   /*******************************/

	   if (devpriv->
	       s_ModuleInfo [b_ModulNbr].
	       s_SiemensCounterInfo.
	       s_InitFlag.
	       b_CounterInit == 1)
	      {
	      /**************************/
	      /* Test the PCI bus clock */
	      /**************************/

	      if ((b_PCIInputClock == APCI1710_30MHZ) ||
		  (b_PCIInputClock == APCI1710_33MHZ) ||
		  (b_PCIInputClock == APCI1710_40MHZ))
		 {
		 /************************/
		 /* Test the timing unit */
		 /************************/

		 if (b_TimingUnity <= 2)
		    {
		    /**********************************/
		    /* Test the base timing selection */
		    /**********************************/

		    if (((b_PCIInputClock == APCI1710_30MHZ) && (b_TimingUnity == 0) && (ul_TimingInterval >= 266) && (ul_TimingInterval <= 8738133UL)) ||
			((b_PCIInputClock == APCI1710_30MHZ) && (b_TimingUnity == 1) && (ul_TimingInterval >= 1)   && (ul_TimingInterval <= 8738UL))    ||
			((b_PCIInputClock == APCI1710_30MHZ) && (b_TimingUnity == 2) && (ul_TimingInterval >= 1)   && (ul_TimingInterval <= 8UL))       ||
			((b_PCIInputClock == APCI1710_33MHZ) && (b_TimingUnity == 0) && (ul_TimingInterval >= 242) && (ul_TimingInterval <= 7943757UL)) ||
			((b_PCIInputClock == APCI1710_33MHZ) && (b_TimingUnity == 1) && (ul_TimingInterval >= 1)   && (ul_TimingInterval <= 7943UL))    ||
			((b_PCIInputClock == APCI1710_33MHZ) && (b_TimingUnity == 2) && (ul_TimingInterval >= 1)   && (ul_TimingInterval <= 7UL))       ||
			((b_PCIInputClock == APCI1710_40MHZ) && (b_TimingUnity == 0) && (ul_TimingInterval >= 200) && (ul_TimingInterval <= 6553500UL)) ||
			((b_PCIInputClock == APCI1710_40MHZ) && (b_TimingUnity == 1) && (ul_TimingInterval >= 1)   && (ul_TimingInterval <= 6553UL))    ||
			((b_PCIInputClock == APCI1710_40MHZ) && (b_TimingUnity == 2) && (ul_TimingInterval >= 1)   && (ul_TimingInterval <= 6UL)))
		       {
		       /**********************/
		       /* Test if 40MHz used */
		       /**********************/

		       if (b_PCIInputClock == APCI1710_40MHZ)
			  {
			  /******************************/
			  /* Test if firmware >= Rev1.5 */
			  /******************************/

			  if ((devpriv->
			       s_BoardInfos.
			       dw_MolduleConfiguration [b_ModulNbr] & 0xFFFF) >= 0x3135)
			     {
			     /*********************************/
			     /* Test if 40MHz quartz on board */
			     /*********************************/

			     /*INPDW (ps_APCI1710Variable->
				    s_Board [b_BoardHandle].
				    s_BoardInfos.
				    ui_Address + 36 + (64 * b_ModulNbr), &dw_Status);*/
				  dw_Status=inl(devpriv->s_BoardInfos.
				    ui_Address + 36 + (64 * b_ModulNbr));

			     /******************************/
			     /* Test the quartz flag (DQ0) */
			     /******************************/

			     if ((dw_Status & 1) != 1)
				{
				/*****