dma1-config.c

adi-bf533-dma-求FFT和DMA综合源码

/******************************************************************************/
//
// Name: 	BF533 EZ-KIT DMA Setup	DSP作业（求FFT和DMA综合）
//
/******************************************************************************

(C) Copyright 2006 - 王启源，指导教师：吴强   导师：阮晓钢	人工智能与机器人研究所，

File Name:	DMA_Config.c

Date Modified:	5/21/07		$Revision: 		1.00 $

Software:       VisualDSP++4.5

Hardware:		ADSP-BF533 EZ-KIT Board

Special Connections:  None

Purpose:		The file sets up the DMA transfer

By:				 Lions Wang   BJUT    AI&Robots  Tuttor： Ruan Xiaogang. 			

See also: 		实验报告

explaination: 当然可以用直接写的方式将XYZ写入SDRAM但是那样损失了DSPcore的速度

ALL RIGHTS RESERVED.					

*********************************************************************************/
#include <services/services.h>
//#include "ezkitutilities.h"
#include <cdefBF533.h>
#define Line_Length  1024
#define Frame_Length 4
#include<fract.h>
void Init_MYMDMA1(fract16 *SorseADDR,fract16 *GoalADDR,u32 DMA_Count)
{

	//Target address of the DMA
	*pMDMA_D1_START_ADDR = GoalADDR;	

	
	//Line_Length 16bit transfers will be executed
	*pMDMA_D1_X_COUNT =DMA_Count;

	//The modifier is set to 2 because of the 16bit transfers
	*pMDMA_D1_X_MODIFY = 0x2;	
														
	//Frame_Length 16bit transfers will be executed
	*pMDMA_D1_Y_COUNT = 1;

	//The modifier is set to 2 because of the 16bit transfers
	*pMDMA_D1_Y_MODIFY = 0x2;	

	//PPI Peripheral is used
	*pMDMA_D1_PERIPHERAL_MAP = 0x0040;	
	
	//MDMA Config: Enable MDMA | Memory write MDMA | 2-D MDMA | Discard MDMA FIFO before start | enable assertation of interrupt | NDSIZE for stop mode | Enable STOP MDMA
	*pMDMA_D1_CONFIG = DMAEN | DI_EN | DMA2D| WNR|WDSIZE_16| DI_EN;	
	
	
		//SORSE address of the DMA
	*pMDMA_S1_START_ADDR = SorseADDR+1;	

	//Line_Length 16bit transfers will be executed
	*pMDMA_S1_X_COUNT = DMA_Count;

	//The modifier is set to 2 because of the 16bit transfers
	*pMDMA_S1_X_MODIFY = 0x2;	
														
	//Frame_Length 16bit transfers will be executed
	*pMDMA_S1_Y_COUNT =1;

	//The modifier is set to 2 because of the 16bit transfers
	*pMDMA_S1_Y_MODIFY = 0x2;	

	//PPI Peripheral is used
	*pMDMA_S1_PERIPHERAL_MAP = 0x0040;	
	
	//MDMA Config: Enable MDMA | Memory write MDMA | 2-D MDMA | Discard MDMA FIFO before start | enable assertation of interrupt | NDSIZE for stop mode | Enable STOP MDMA
	*pMDMA_S1_CONFIG = DMAEN | DI_EN |DMA2D| WDSIZE_16| DI_EN;
	//*pMDMA_S1_CONFIG = DMAEN | DI_EN | WNR |DMA2D| WDSIZE_16| DI_EN;



}//end DMA1——init