正弦波.c

DA产生正弦波

#include<reg52.h>
#include<math.h>
#define uchar unsigned char
#define uint unsigned int
uint code d[]=
{

255,255,255,255,255,254,254,253,
252,252,251,250,249,248,247,246,
245,243,242,240,239,237,236,234,
232,230,228,226,224,222,220,218,
216,213,211,209,206,204,201,199,
196,193,191,188,185,182,179,176,
174,171,168,165,162,159,156,152,
149,146,143,140,137,134,131,128,
124,121,118,115,112,109,106,103,
99,96,93,90,87,84,81,79,
76,73,70,67,64,62,59,56,
54,51,49,46,44,42,39,37,
35,33,31,29,27,25,23,21,
19,18,16,15,13,12,10,9,
8,7,6,5,4,3,3,2,
1,1,0,0,0,0,0,0,
0,0,0,0,0,1,1,2,
3,3,4,5,6,7,8,9,
10,12,13,15,16,18,19,21,
23,25,27,29,31,33,35,37,
39,42,44,46,49,51,54,56,
59,62,64,67,70,73,76,79,
81,84,87,90,93,96,99,103,
106,109,112,115,118,121,124	,
128,131,134,137,140,143,146,149,152,
156,159,162,165,168,171,174,176,
179,182,185,188,191,193,196,199,
201,204,206,209,211,213,216,218,
220,222,224,226,228,230,232,234,
236,237,239,240,242,243,245,246,
247,248,249,250,251,252,252,253,
254,254,255,255,255,255,255,256
};
void main()
{
	uint i;
	while(1)
	{
	  for(i=0;i<=254;i++)
	  {
		P0=d[i];
	  }	
	}

	P3^1==0;
	P3^2==1;
}