仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）
51hei.png (14.99 KB, 下載次數: 38)
下載附件
2019-12-2 11:59 上傳
單片機源程序如下:
- #include<reg51.h>
- sbit wr=P3^6;
- sbit rd=P3^2;
- sbit key0=P1^0;
- sbit key1=P1^1;
- sbit key2=P1^2;
- sbit key3=P1^3;
- sbit key4=P1^4;
- unsigned char flag;//flag為0、1、2、3、4時分別為正弦波、方波、三角波、梯形波、鋸齒波
- unsigned char const code ZXB_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
- }; //用于生成正弦
- unsigned char keyscan() //鍵盤掃描函數
- {
- unsigned char keyscan_num,temp;
- P1=0xff;
- temp=P1;
- if(~(temp&0xff))
- {
- if(key0==0)
- {
- keyscan_num=1;
- }
- else if(key1==0)
- {
- keyscan_num=2;
- }
- else if(key2==0)
- {
- keyscan_num=3;
- }
- else if(key3==0)
- {
- keyscan_num=4;
- }
- else if(key4==0)
- {
- keyscan_num=5;
- }
- else
- {
- keyscan_num=0;
- }
- return keyscan_num;
- }
- }
- void init_DA0832()//DA芯片準備函數
- {
- rd=0;
- wr=0;
- }
- void ZXB()//正弦波函數
- {
- unsigned int i;
-
- do{
- P2=ZXB_code[i];
- i=i+1;
- }while(i<256);
- }
- void FB()//方波
- {
- EA=1;
- ET0=1;
- TMOD=1;
- TR0=1;
- TH0=0xff;
- TL0=0x83;
- }
- void SJB()//三角波
- {
- P2=0x00;
- do{
- P2=P2+1;
- }while(P2<0xff);
- P2=0xff;
- do{
- P2=P2-1;
- }while(P2>0x00);
- P2=0x00;
- }
- void JCB()//鋸齒波
- {
- P2=0x00;
- do{
- P2=P2+1;
- }while(P2<=0xff);
- }
- void TXB()//梯形波
- {
- unsigned char i;
- P2=0x00;
- do{
- P2=P2+1;
- }while(P2<0xff);
- P2=0xff;
- for(i=255;i>0;i--)
- {
- P2=0xff;
- }
- do{
- P2=P2-1;
- }while(P2>0x00);
- P2=0x00;
- }
- void main()
- {
- init_DA0832();
- do
- {
- flag=keyscan();
- }while(!flag);//等待按鍵按下
- while(1)
- {
- switch(flag)
- {
- case 1:
- do{
- flag=keyscan();
- ZXB();
- }while(flag==1);
- break;
- case 2:
- FB();
- do{
- flag=keyscan();
- }while(flag==2);
- TR0=0;
- break;
- case 3:
- do{
- flag=keyscan();
- SJB();
- }while(flag==3);
- break;
- case 4:
- do{
- flag=keyscan();
- TXB();
- }while(flag==4);
- break;
- case 5:
- do{
- flag=keyscan();
- JCB();
- }while(flag==5);
- break;
- default:
- flag=keyscan();
- break;
- }
- }
- }
- void timer0(void) interrupt 1
- {
- P2=~P2;
- TH0=0xff;
- TL0=0x83;
- TR0=1;
- }
51hei.png (7.48 KB, 下載次數: 20)
下載附件
2019-12-2 12:00 上傳
所有資料51hei提供下載:
波形發生器.zip
(93.28 KB, 下載次數: 141)
2019-12-1 22:15 上傳
點擊文件名下載附件
下載積分: 黑幣 -5
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這個proteus仿真是吧！
