002_89C52_Proteus_DAC0832_输出50HZ,正弦波，三角波，矩形波，锯齿波

（一）非常感谢：89C51与ad0832 输出正弦波，三角波，矩形波，锯齿波

（二）在上面的情况下进行程序的修改，实现50HZ的输出

（三）电路图

（三）输出方波

（四）输出锯齿波

（五）输出三角波

（六）输出正玄波

（七）程序

#include <absacc.h>
#include <reg52.h>#define DA0832 P2
#define DATA 57          //定时器延时 #define uchar unsigned char
#define uint unsigned intsbit S1 = P1^0;
sbit S2 = P1^1;
//00锯齿波；01方波；10三角波；11正弦波uchar code sin_tab[] =        //正弦波输出表
{0x80,0x83,0x86,0x89,0x8D,0x90,0x93,0x96,0x99,0x9C,0x9F,0xA2,0xA5,0xA8,0xAB,0xAE,0xB1,0xB4,0xB7,0xBA,0xBC,0xBF,0xC2,0xC5,0xC7,0xCA,0xCC,0xCF,0xD1,0xD4,0xD6,0xD8,0xDA,0xDD,0xDF,0xE1,0xE3,0xE5,0xE7,0xE9,0xEA,0xEC,0xEE,0xEF,0xF1,0xF2,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFD,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFD,0xFD,0xFC,0xFB,0xFA,0xF9,0xF8,0xF7,0xF6,0xF5,0xF4,0xF2,0xF1,0xEF,0xEE,0xEC,0xEA,0xE9,0xE7,0xE5,0xE3,0xE1,0xDF,0xDD,0xDA,0xD8,0xD6,0xD4,0xD1,0xCF,0xCC,0xCA,0xC7,0xC5,0xC2,0xBF,0xBC,0xBA,0xB7,0xB4,0xB1,0xAE,0xAB,0xA8,0xA5,0xA2,0x9F,0x9C,0x99,0x96,0x93,0x90,0x8D,0x89,0x86,0x83,0x80,0x80,0x7C,0x79,0x76,0x72,0x6F,0x6C,0x69,0x66,0x63,0x60,0x5D,0x5A,0x57,0x55,0x51,0x4E,0x4C,0x48,0x45,0x43,0x40,0x3D,0x3A,0x38,0x35,0x33,0x30,0x2E,0x2B,0x29,0x27,0x25,0x22,0x20,0x1E,0x1C,0x1A,0x18,0x16,0x15,0x13,0x11,0x10,0x0E,0x0D,0x0B,0x0A,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0D,0x0E,0x10,0x11,0x13,0x15,0x16,0x18,0x1A,0x1C,0x1E,0x20,0x22,0x25,0x27,0x29,0x2B,0x2E,0x30,0x33,0x35,0x38,0x3A,0x3D,0x40,0x43,0x45,0x48,0x4C,0x4E,0x51,0x55,0x57,0x5A,0x5D,0x60,0x63,0x66,0x69,0x6C,0x6F,0x72,0x76,0x79,0x7C,0x7E
};void stair(void);//锯齿波
void square(void);//方波
void trian();//三角波
void sin();//正弦波
void scan();//扫描函数
void Timer0Init(void);        //75微秒@11.0592MHz
uchar flag = 0;void main()
{    P2 = 0xff;Timer0Init();while(1){//逐个测试 //stair();        /*锯齿波*///    square();  /*方波*/// trian();    /*三角波*///    sin();  /*正弦波*/scan();}
}void Timer0Init(void)        //75微秒@11.0592MHz
{TMOD = 0x01;        //设置定时器模式TH0  = (65536 - DATA) / 256;        //设置定时初值TL0  = (65536 - DATA) % 256;        //设置定时初值ET0  = 1;            //TF0标志TR0  = 1;            //定时器0开始计时EA   = 1;
}
void timer0_ISR(void) interrupt 1
{TH0  = (65536 - DATA) / 256;        //设置定时初值TL0  = (65536 - DATA) % 256;        //设置定时初值TR0  = 0;flag = 1;
}void scan()
{if((0 == S1) &&(0 == S2))stair();else if((1 == S1) && (0 == S2))square();else if((0 == S1) && (1 == S2))trian();elsesin();}void stair(void)
{uchar i;for(i = 0 ;i < 255; i++){DA0832 = i;TR0  = 1;while(flag == 0);flag = 0;}}void square(void)
{int i;DA0832 = 0xff;for(i = 0;i < 125;i++){TR0  = 1;while(flag == 0);flag = 0;        }DA0832 = 0x00;for(i = 0;i < 125;i++){TR0  = 1;while(flag == 0);flag = 0;        }
}void trian(void)
{uchar i;for(i = 0 ;i < 125; i++){DA0832 = i;TR0  = 1;while(flag == 0);flag = 0;}for(i=125 ;i > 0; i--){DA0832 = i;TR0  = 1;while(flag == 0);flag = 0;}
}void sin()
{uchar i;for(i = 0; i < 255; i++){DA0832 = sin_tab[i];TR0  = 1;while(flag == 0);flag = 0;        }
}

（八）工程源码下载

https://download.csdn.net/download/xiaoguoge11/10742925

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