m29w320.c

基于visual dsp++开发环境

///////////////////////////////////////////////////////////////
//
// m292w320.c
//
// Analog Devices, Inc. - 2004
//
//
// Change Log
//
//		1.00.0
//			- initial release
//
// VisualDSP++ "Flash Programmer" flash driver for use with the
// ADSP-BF538 EZ-KIT Lite containing the STMicroelectronics M29W320DB
// flash device.
//
///////////////////////////////////////////////////////////////

/*===== I n c l u d e s  =====*/

#include <services/services.h>
#include <drivers/adi_dev.h>		// device manager includes
#include <stdlib.h>
#include <drivers\flash\util.h>			// library struct includes
#include <drivers\flash\adi_m29w320.h>	// flash-M29W320 includes
#include <drivers\flash\Errors.h>		// error type includes


#define FLASH_SECTOR_65				65
#define FLASH_SECTOR_69				69

#define FLASH_START_ADDR 			0x20000000
#define FLASH_SECTOR_OFFSET			0x003E0000



/*********************************************************************
*
*	Function:	main
*
*********************************************************************/

int TEST_FLASH(void)
{
	int i;
	unsigned int iPassed = 0;
	unsigned int iResult;				// result
	ADI_DEV_1D_BUFFER FlashBuff1D;		// write buffer pointer
	unsigned short sVal = 0;
	unsigned int nSector = 0;
	int nManCode = 0;
	int nDevCode = 0;

	COMMAND_STRUCT pCmdBuffer;

	// setup the external bus control
	*pEBIU_AMGCTL = 0xFF;


	// need to GetCodes because that is also where we figure
	// out the number of sectors because we don't know if the flash
	// is the M29W320DB or M29W320EB
	pCmdBuffer.SGetCodes.pManCode = (unsigned long *)&nManCode;
	pCmdBuffer.SGetCodes.pDevCode = (unsigned long *)&nDevCode;
	pCmdBuffer.SGetCodes.ulFlashStartAddr = FLASH_START_ADDR;

	iResult = adi_dev_Control(DevHandleM29W320, CNTRL_GET_CODES, &pCmdBuffer );

	// erase the second to last sector
	// (the last sector on the BF537 and STAMP have the mac address)
	if( nDevCode == 0x2257 )
	{
		pCmdBuffer.SEraseSect.nSectorNum = FLASH_SECTOR_69;
	}
	else
	{
		pCmdBuffer.SEraseSect.nSectorNum = FLASH_SECTOR_65;
	}

	pCmdBuffer.SEraseSect.ulFlashStartAddr = FLASH_START_ADDR;

	// Erase the flash
	iResult = adi_dev_Control(DevHandleM29W320, CNTRL_ERASE_SECT, &pCmdBuffer );
	if(ADI_DEV_RESULT_SUCCESS == iResult)
	{
		// initialize our buffer
		FlashBuff1D.Data = &sVal;

		for( i = 0; i < 0xFFFF; i+=2 )
		{
			unsigned long ulOffset = (FLASH_SECTOR_OFFSET | FLASH_START_ADDR) + i ;
			FlashBuff1D.pAdditionalInfo = (void *)&ulOffset;
			FlashBuff1D.pNext = NULL;
			sVal = i;

			// write to the flash
			iResult = adi_dev_Write(DevHandleM29W320, ADI_DEV_1D, (ADI_DEV_BUFFER *)&FlashBuff1D);
			if(ADI_DEV_RESULT_SUCCESS == iResult)
			{
				iPassed = 1;
				sVal = 0;

				// Read back the values from sector
				// set the parameters needed to do a read

				// read from the flash
				iResult = adi_dev_Read(DevHandleM29W320, ADI_DEV_1D, (ADI_DEV_BUFFER *)&FlashBuff1D);
				if(ADI_DEV_RESULT_SUCCESS == iResult)
				{
					if( i != sVal )
					{
						iPassed = 0;
						break;
					}
				}
			}//end adi_pdd_Write() -- if(ADI_DEV_RESULT_SUCCESS == iResult)
		}// end for( i = 0; i < 0xFFFF; i+=2 )
	}//end adi_pdd_Control() -- if(ADI_DEV_RESULT_SUCCESS == iResult)


	return iPassed;
}


/*********************************************************************
*
*	Function:	main
*
*********************************************************************/
#ifdef _STANDALONE_ // use this to run standalone tests
int main(void)
{
	int iStatus;

	asm("nop;");

	while(1)
	{
		iStatus = TEST_FLASH();
		if( 0 == iStatus )
		{
			asm("emuexcpt;");
		}
	}

}
#endif //#ifdef _STANDALONE_ // use this to run standalone tests