graphmake.c

一些基于TMS320 LF2407 DSP的实验程序

/*******************************************************************/
#include "math.h"
#include "stdio.h"
#include "exp1_2407.h"
#define  N  81
#define  M  81
#define  pi 3.1415926
/*******************************************************************/
int i,j,y[M][N],k;
double x[(N-1)/2],r;
double m,n,t;
	
void sys_ini()
{
     asm(" setc INTM");         //禁止所有中断
     asm(" setc SXM");          //抑制符号位扩展
     asm(" clrc OVM");          //累加器中结果正常溢出
     * SCSR1=0x81FE;            //配置时钟锁相为4倍频CLKOUT=4*7.3728=29.4912M
     * WDCR=0x00EF;             //禁止看门狗
     * IFR=0xFFFF;              //清除所有中断标志,"写1清0"
}

void nothing()
{
    return;
}

void main()
{

	sys_ini();
	for (;;)
	{
		for (t=0; t<=32; t++)
		{
			for (i=0; i<=(N-1)/2-1; i++)
			{
				x[i] = 127*(1+cos(2*pi*i/((N-1)/2-1)-t*pi/16));
			}				
			for (i=0; i<=M-1; i++)
			{
				for (j=0; j<=N-1; j++)
				{
					y[i][j] = 0;
					m = i;
					n = j;
					r = (m-40)*(m-40)+(n-40)*(n-40);
					k = (int)(sqrt(r));
			
					if (k<=39) y[i][j] = x[k];
					else y[i][j] = 0;
				}
			}
	
			i=0;    //在此处设断点观察图形
			j=0;
		}
	}
}
/***********************************************************************
** End of File 
***********************************************************************/