main.c

基于TMS320c5416的D/A转换程序

#include "myapp.h"
#include "ICETEK-VC5509-EDU.h"
#include "scancode.h"
#include "math.h"
ioport unsigned int * sysR = (unsigned int *)0x7fd;

main()
{
//	unsigned char dbScanCode;
//    short int i,j,chn_num;
	int k,k1,k2;
	float fWork,fStep;

	fWork=0.0;
	fStep=PI2/256;
	k=k1=k2=0;
	PLL_Init(72);
	SDRAM_init();
	
    (*sysR)=1;
    for(;;)
    {
		k1=k;
		k2=(int)(128*sin(fWork))+128;
		fWork+=fStep; if ( fWork>PI2 )	fWork-=PI2;
        DA_DATA_1=k1;
        DA_DATA_2=k2;		
		k++; k%=256;
    }
}