通過中斷按鈕控制不同波形的輸出
原理圖.jpg (99.38 KB, 下載次數(shù): 103)
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proteus仿真圖（未加晶振）
2020-4-4 09:46 上傳
單片機代碼如下：
//main部分
- #include "dac0862.h"
- void main()
- {
- init_dac0862();
- initial_int1();
- while(1)
- {
- disp();
- }
- }
//dac0862.c部分
- #include "dac0862.h"
- sbit sin = P1^0;//正弦波
- sbit squ = P1^1;//方波
- sbit tri = P1^2;//三角波
- sbit tra = P1^3;//梯形波
- sbit saw = P1^4;//鋸齒波
- sbit cs0832 = P3^2;
- sbit wr = P3^6;
- u8 key = 0;//模式狀態(tài)
- unsigned char const code
- SIN_code[256]={0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,0x98,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,
- 0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,0xda,0xdc,0xde,
- 0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xed,0xef,0xf0,0xf2,0xf3,0xf4,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,
- 0xfc,0xfc,0xfd,0xfe,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,0xfd,
- 0xfc,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf3,0xf2,0xf0,0xef,0xed,0xec,0xea,0xe8,0xe6,0xe4,
- 0xe3,0xe1,0xde,0xdc,0xda,0xd8,0xd6,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4,0xc1,0xbf,0xbc,0xb9,0xb6,
- 0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x92,0x8f,0x8c,0x89,0x86,0x83,0x80,0x7d,
- 0x79,0x76,0x73,0x70,0x6d,0x6a,0x67,0x64,0x61,0x5e,0x5b,0x58,0x55,0x52,0x4f,0x4c,0x49,0x46,0x43,
- 0x41,0x3e,0x3b,0x39,0x36,0x33,0x31,0x2e,0x2c,0x2a,0x27,0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,
- 0x15,0x14,0x12,0x10,0xf,0xd,0xc,0xb,0x9,0x8,0x7,0x6,0x5,0x4,0x3,0x3,0x2,0x1,0x1,0x0,0x0,0x0,0x0,
- 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x2,0x3,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xa,0xc,0xd,0xe,0x10,0x12,
- 0x13,0x15,0x17,0x18,0x1a,0x1c,0x1e,0x20,0x23,0x25,0x27,0x29,0x2c,0x2e,0x30,0x33,0x35,0x38,0x3b,
- 0x3d,0x40,0x43,0x46,0x48,0x4b,0x4e,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,0x66,0x69,0x6c,0x6f,0x73,
- 0x76,0x79,0x7c};
- void delay(uint x)
- {
- uint i,j;
- for(i = 0;i < x;i++)
- {
- for(j = 0;j < 110;j++)
- ;
- }
- }
- void init_dac0862()//選中芯片初始化
- {
- cs0832 = 0;
- wr = 0;
- }
- void sin_out()//輸出正弦波
- {
- uint i = 0;
- while(i < 256)
- {
- P2 = SIN_code[i];
- i++;
- }
- }
- void squ_out()//輸出方波
- {
- P2 = 0xff;
- delay(100);
- P2 = 0x00;
- delay(100);
- }
- void tri_out()//輸出三角波
- {
- uint i = 0x00;
- while(i < 0xff)
- {
- P2 = i;
- i = i + 0x01;
- }
- while(i > 0x00)
- {
- P2 = i;
- i = i - 0x01;
- }
- }
- void tra_out()//輸出梯形波
- {
- uint i = 0x00;
- while(i < 0xff)
- {
- P2 = i;
- i = i + 0x01;
- }
- delay(30);
- while(i > 0x00)
- {
- P2 = i;
- i = i - 0x01;
- }
- delay(30);
- }
- void saw_out()//輸出鋸齒波
- {
- uint i = 0x00;
- while(i < 0xff)
- {
- P2 = i;
- i = i + 0x01;
- }
- i = 0;
- }
- void initial_int1()//外部中斷1初始化
- {
- IT1 = 1;
- EX1 = 1;
- EA = 1;
- }
- void int1_serv() interrupt 2
- {
- //無按鈕按下則不顯示波形
- if(sin == 0)
- key = 1;
- else if(squ == 0)
- key = 2;
- else if(tri == 0)
- key = 3;
- else if(tra == 0)
- key = 4;
- else if(saw == 0)
- key = 5;
- }
- void disp()
- {
- //模式0，無按鈕按下則不顯示波形
- if(key == 1)//模式1，正弦波
- sin_out();
- else if(key == 2)//模式2，方波
- squ_out();
- else if(key == 3)//模式3，三角波
- tri_out();
- else if(key == 4)//模式4，梯形波
- tra_out();
- else if(key == 5)//模式5，鋸齒波
- saw_out();
- }
//dac0862.h部分
#ifndef __DAC0862_H__
#define __DAC0862_H__
#include <reg51.h>
#define u8 unsigned char
#define uchar unsigned char
#define uint unsigned int
void delay(uint x);
void init_dac0862();//選中芯片初始化
void sin_out();//輸出正弦波
void squ_out();//輸出方波
void tri_out();//輸出三角波
void tra_out();//輸出梯形波
void saw_out();//輸出鋸齒波
void initial_int1();//外部中斷1初始化
void disp();
#endif
全部資料51hei下載地址：
波形發(fā)生器.zip
(89.39 KB, 下載次數(shù): 36)
2020-4-4 09:47 上傳
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下載積分: 黑幣 -5
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