51單片機(jī)正弦波產(chǎn)生程序C語言源碼

ID:317317 · 發(fā)表于 2018-4-26 20:21

正弦波產(chǎn)生程序C語言
單片機(jī)源程序如下:

#include "reg51.h"
#define uchar unsigned char
uchar code sine_table[]={0x80,0x8C,0x98,0xA5,0xB0,0xBC,0xC7,0xD1, //正弦數(shù)據(jù)表
0xDA,0xE2,0xEA,0xF0,0xF6,0xFA,0xFD,0xFF,
0xFF,0xFF,0xFD,0xFA,0xF6,0xF0,0xEA,0xE3,
0xDA,0xD1,0xC7,0xBC,0xB1,0xA5,0x99,0x8C,
0x80,0x73,0x67,0x5B,0x4F,0x43,0x39,0x2E,
0x25,0x1D,0x15,0xF,0x9,0x5,0x2,0x0,0x0,
0x0,0x02,0x05,0x9,0xE,0x15,0x1C,0x25,0x2E,
0x38,0x43,0x4E,0x5A,0x66,0x73};
sbit K1=P2^7; //端口定義
sbit WR1=P2^5;
/****************************/
void Delay(uchar m) //延時(shí)程序
{
uchar i;
while(--m)for(i=0;i<1;i++);
}
/******************************************/
void main() //主程序
{
uchar k;
while(1)
{
if(K1==0)
{
for(k=0;k<64;k++)
{
WR1=1;
P0=sine_table[k];
WR1=0;
Delay(1);
}
}
else //K1打開，輸出鋸齒波
{
for(k=0;k<255;k=k+4)
{
WR1=1;
P0=k;
WR1=0;
Delay(1);
}
}
}
}