mx21_dma.h

MX21_InitCodeLib.rar freescale mx21系列ARM芯片9328的WINCE5.0下初始化代码

/**********************************************************************
*
*         (C) COPYRIGHT 2004 FREESCALE, INC.
*         ALL RIGHTS RESERVED
*
*
*     Group/Division:  WMSG/MMDO
*
*     Description:
*
*     Related Specifications:
*
*     Errata:
*
*     File Name:        MX21_DMA.h
*     Revision Number:  0.1
*     Author(s):        E Kroitor
*     Date created:     30 September 2004
*     Revision History:
*        Date      Rev     Description
*        ----      ---     -----------
*        30Sept04  0.1     First draft
*
**********************************************************************/

#ifndef _MX21DMA_H_
#define _MX21DMA_H_

#include "MX21_MemMap.h"
#include "MX21_Macros.h"
#include "MX21_DataTypes.h"
#include "MX21_Common.h"


/********************************************************************
F U N C T I O N   P R O T O T Y P E S
/*********************************************************************/
#define NUMBER_OF_BYTES 512
#define DMA_BURST_LENGTH 64
#define SDRAM_TEST_LENGTH NUMBER_OF_BYTES
#define SDRAM_TEST_LENGTH_WORD NUMBER_OF_BYTES / 4
#define OFFSET_FOR_CODE 0x10000
#define SOURCE_ADDRESS 0xC2000000
#define DESTINATION_ADDRESS 0xC3000000

/* DMA transfer example program */

void
dmaDemo(void);		         // main dma demo function
/*--------------------------------------------------
//
// Main Function
//-------------------------------------------------*/


void
fillMem(uint32_t);	    	 // start creating pattern
/*---------------------------------------------------
//
// Fill SDRAM memory source with predetermined pattern
//--------------------------------------------------*/


void  
dmaSetUp(p_uint32_t,         // source address
		 p_uint32_t,         // destination address
		 int,                // total bytes	
		 int );              // burst length total
/*---------------------------------------------------
//
// Set up DMA for memory to memory transfer
//--------------------------------------------------*/


void
enableDmaTransfer(uint32_t); // transfer data via dma 
/*---------------------------------------------------
//
// Enable DMA transfer and check if pattern on destination 
// address is the same as the pattern on the source address.
// If it is the same, PASS
//--------------------------------------------------*/

#endif