/******************************************************************************
**   Main Function  main()
******************************************************************************/
int main (void)
{
  uint32_t i, portnum = PORT_NUM;

  /* SystemClockUpdate() updates the SystemFrequency variable */
  SystemClockUpdate();

  if ( portnum == 0 )
	SSP0Init();			/* initialize SSP port */
  else if ( portnum == 1 )
	SSP1Init();
  
  for ( i = 0; i < SSP_BUFSIZE; i++ )
  {
	src_addr[i] = (uint8_t)i;
	dest_addr[i] = 0;
  }

#if TX_RX_ONLY
  /* For the inter-board communication, one board is set as
  master transmit, the other is set to slave receive. */
#if SSP_SLAVE
  /* Slave receive */
  SSPReceive( portnum, (uint8_t *)dest_addr, SSP_BUFSIZE );
  for ( i = 0; i < SSP_BUFSIZE; i++ )
  {
	if ( src_addr[i] != dest_addr[i] )
	{
	  while ( 1 );				/* Verification failure, fatal error */
	} 
  }
#else
  /* Master transmit */
  SSPSend( portnum, (uint8_t *)src_addr, SSP_BUFSIZE);
#endif
#else
  /* TX_RX_ONLY=0, it's either an internal loopback test
  within SSP peripheral or communicate with a serial EEPROM. */
#if LOOPBACK_MODE
  LoopbackTest( portnum, LOCATION_NUM );
#else
  SEEPROMTest( portnum, LOCATION_NUM );
#endif			/* endif NOT LOOPBACK_MODE */
#endif			/* endif NOT TX_RX_ONLY */
  /* Never exit from main(), for easy debugging. */
  while ( 1 );
  return 0;
}
Exemple #2
0
/**
*
* Runs a self-test on the driver/device. The self-test is destructive in that
* a reset of the device is performed in order to check the reset values of
* the registers and to get the device into a known state. A simple loopback
* test is also performed to verify that transmit and receive are working
* properly. The device is changed to master mode for the loopback test, since
* only a master can initiate a data transfer.
*
* Upon successful return from the self-test, the device is reset.
*
* @param	InstancePtr is a pointer to the XSpi instance to be worked on.
*
* @return
* 		- XST_SUCCESS if successful.
*		- XST_REGISTER_ERROR indicates a register did not read or write
*		  correctly.
* 		- XST_LOOPBACK_ERROR if a loopback error occurred.
*
* @note		None.
*
******************************************************************************/
int XSpi_SelfTest(XSpi *InstancePtr)
{
	int Result;
	u32 Register;

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


	/* Return Success if XIP Mode */
	if((InstancePtr->XipMode) == 1) {
		return XST_SUCCESS;
	}

	/*
	 * Reset the SPI device to leave it in a known good state.
	 */
	XSpi_Reset(InstancePtr);

	if(InstancePtr->XipMode)
	{
		Register = XSpi_GetControlReg(InstancePtr);
		if (Register != XSP_CR_RESET_STATE) {
			return XST_REGISTER_ERROR;
		}

		Register = XSpi_GetStatusReg(InstancePtr);
		if ((Register & XSP_SR_RESET_STATE) != XSP_SR_RESET_STATE) {
			return XST_REGISTER_ERROR;
		}
	}




	/*
	 * All the SPI registers should be in their default state right now.
	 */
	Register = XSpi_GetControlReg(InstancePtr);
	if (Register != XSP_CR_RESET_STATE) {
		return XST_REGISTER_ERROR;
	}

	Register = XSpi_GetStatusReg(InstancePtr);
	if ((Register & XSP_SR_RESET_STATE) != XSP_SR_RESET_STATE) {
		return XST_REGISTER_ERROR;
	}

	/*
	 * Each supported slave select bit should be set to 1.
	 */
	Register = XSpi_GetSlaveSelectReg(InstancePtr);
	if (Register != InstancePtr->SlaveSelectMask) {
		return XST_REGISTER_ERROR;
	}

	/*
	 * If configured with FIFOs, the occupancy values should be 0.
	 */
	if (InstancePtr->HasFifos) {
		Register = XSpi_ReadReg(InstancePtr->BaseAddr,
					 XSP_TFO_OFFSET);
		if (Register != 0) {
			return XST_REGISTER_ERROR;
		}
		Register = XSpi_ReadReg(InstancePtr->BaseAddr,
					 XSP_RFO_OFFSET);
		if (Register != 0) {
			return XST_REGISTER_ERROR;
		}
	}

	/*
	 * Run loopback test only in case of standard SPI mode.
	 */
	if (InstancePtr->SpiMode != XSP_STANDARD_MODE) {
		return XST_SUCCESS;
	}

	/*
	 * Run an internal loopback test on the SPI.
	 */
	Result = LoopbackTest(InstancePtr);
	if (Result != XST_SUCCESS) {
		return Result;
	}

	/*
	 * Reset the SPI device to leave it in a known good state.
	 */
	XSpi_Reset(InstancePtr);

	return XST_SUCCESS;
}