xttcps_selftest.c

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/* $Id: xttcps_selftest.c,v 1.1.2.1 2011/01/20 04:08:59 sadanan Exp $ */
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/**
*
* @file xttcps_selftest.c
*
* This file contains the implementation of self test function for the
* XTtcPs driver.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who    Date     Changes
* ----- ------ -------- ---------------------------------------------
* 1.00a drg/jz 01/21/10 First release
* </pre>
*
******************************************************************************/

/***************************** Include Files *********************************/

#include "xttcps.h"

/************************** Constant Definitions *****************************/


/**************************** Type Definitions *******************************/


/***************** Macros (Inline Functions) Definitions *********************/


/************************** Function Prototypes ******************************/


/************************** Variable Definitions *****************************/


/*****************************************************************************/
/**
*
* Runs a self-test on the driver/device.
*
*
* @param	InstancePtr is a pointer to the XTtcPs instance.
*
* @return
*
*	- XST_SUCCESS if successful
*	- XST_FAILURE indicates a register did not read or write correctly
*
* @note		This test fails if it is not called right after initialization.
*
******************************************************************************/
int XTtcPs_SelfTest(XTtcPs *InstancePtr)
{
	u32 TempReg;

	Xil_AssertNonvoid(InstancePtr != NULL);
	Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);

	/*
	 * All the TTC registers should be in their default state right now.
	 */
	TempReg = XTtcPs_ReadReg(InstancePtr->Config.BaseAddress,
				   XTTCPS_CNT_CNTRL_OFFSET);
	if (XTTCPS_CNT_CNTRL_RESET_VALUE != TempReg) {
		return XST_FAILURE;
	}

	return XST_SUCCESS;
}