main.c

EDMA功能测试程序,高人给的,对于想学习EDMA的朋友或者有帮助.

#include<csl.h>
#include<csl_edma.h>

unsigned int i;
unsigned int TEST_RD_DATA_ADDR[32]=
{
	0x12345678,0x87654321,0x12345678,0x87654321,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x12345678,0x87654321,0x12345678,0x87654321,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x12345678,0x87654321,0x12345678,0x87654321,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x12345678,0x87654321,0x12345678,0x87654321,
	0x00000000,0x00000000,0x00000000,0x00000000
};
unsigned int TEST_WR_DATA_ADDR[32]= 
{
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
	0x00000000,0x00000000,0x00000000,0x00000000,
};


void Delay(unsigned int uw_DelayCnt)
{
	int i;

	for (i = 0; i < 6 * uw_DelayCnt; i++)
	{
		asm("  nop   8");
	}
}


EDMA_Config edmaCfg_0 = {
	//0x61200001,        			/*  Option  								*/
	0x20000000,        			/*  Option  								*/
	(Uint32)TEST_RD_DATA_ADDR,  /*  Source Address - Numeric   				*/
	0x00000020,        			/*  Transfer Counter - Numeric  			*/
	(Uint32)TEST_WR_DATA_ADDR,	/*  Destination Address - Extern Decl. Obj  */
	0x00000000,        			/*  Index register - Numeric  				*/
	0x000b0000         			/*  Element Count Reload and Link Address  	*/
};

void main(void)
{
	unsigned int i;
	EDMA_Handle hEdmaCha_0;

	CSL_init();
    hEdmaCha_0 = EDMA_open(EDMA_CHA_ANY, EDMA_OPEN_RESET);
    EDMA_config(hEdmaCha_0, &edmaCfg_0);
	EDMA_enableChannel(hEdmaCha_0);
	//trigger EDMA by CPU
	for(i = 0; i < 32; i++)
	{
		EDMA_setChannel(hEdmaCha_0);
		Delay(1);	
	}
	Delay(1);
	while(1);

}