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 (103.32 KB, 下載次數: 44)
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單片機源程序如下:
- #include<reg52.h> //包含頭文件,一般情況不需要改動,頭文件包含特殊功能寄存器的定義
- #include <intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- #define DA_DP P0
- sbit DAILE = P2^4;
- sbit DAWR2 = P2^5;
- sbit DAXFER= P2^6;
- sbit DAWR1 = P2^7;
- sbit key1=P1^0;
- sbit key2=P1^1;
- sbit key3=P1^2;
- sbit key4=P1^3;
- uint code sin[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,
- 0x15,0x14,0x12,0x10,0x0f,0x0d,0x0c,0x0b,
- 0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,
- 0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,
- 0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08,
- 0x09,0x0a,0x0c,0x0d,0x0e,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
- };
- uint code stright[]={0x00,0x02,0x04,0x06,0x08,0x0a,0x0c,0x0e,
- 0x10,0x12,0x14,0x16,0x18,0x1a,0x1c,0x1e,
- 0x20,0x22,0x24,0x26,0x28,0x2a,0x2c,0x2e,
- 0x30,0x32,0x34,0x36,0x38,0x3a,0x3c,0x3e,
- 0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x4e,
- 0x50,0x52,0x54,0x56,0x58,0x5a,0x5c,0x5e,
- 0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6e,
- 0x70,0x72,0x74,0x76,0x78,0x7a,0x7c,0x7e,
- 0x80,0x82,0x84,0x86,0x88,0x8a,0x8c,0x8e,
- 0x90,0x92,0x94,0x96,0x98,0x9a,0x9c,0x9e,
- 0xa0,0xa2,0xa4,0xa6,0xa8,0xaa,0xac,0xae,
- 0xb0,0xb2,0xb4,0xb6,0xb8,0xba,0xbc,0xbe,
- 0xc0,0xc2,0xc4,0xc6,0xc8,0xca,0xcc,0xce,
- 0xd0,0xd2,0xd4,0xd6,0xd8,0xda,0xdc,0xde,
- 0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xee,
- 0xf0,0xf2,0xf4,0xf6,0xf8,0xfa,0xfc,0xfe,
- /* 0xfc,0xfa,0xf8,0xf6,0xf4,0xf2,0xf0,
- 0xee,0xec,0xea,0xe8,0xe6,0xe4,0xe2,0xe0,
- 0xce,0xcc,0xca,0xc8,0xc6,0xc4,0xc2,0xc0,
- 0xbe,0xbc,0xba,0xb8,0xb6,0xb4,0xb2,0xb0,
- 0xae,0xac,0xaa,0xa8,0xa6,0xa4,0xa2,0xa0,
- 0x9e,0x9c,0x9a,0x98,0x96,0x94,0x92,0x90,
- 0x8e,0x8c,0x8a,0x88,0x86,0x84,0x82,0x80,
- 0x7e,0x7c,0x7a,0x78,0xf6,0x74,0x72,0x70,
- 0x6e,0x6c,0x6a,0x68,0x66,0x64,0x62,0x60,
- 0x5e,0x5c,0x5a,0x58,0x56,0x54,0x52,0x50,
- 0x4e,0x4c,0x4a,0x48,0x46,0x44,0x42,0x40,
- 0x3e,0x3c,0x3a,0x38,0x36,0x34,0x32,0x30,
- 0x2e,0x2c,0x2a,0x28,0x26,0x24,0x22,0x20,
- 0x1e,0x1c,0x1a,0x18,0x16,0x14,0x12,0x10,
- 0x0e,0x0c,0x0a,0x08,0x06,0x04,0x02,*/
- };
- uint i;
- uchar Choose;
- void delay_ms(uchar t)
- {
- uchar i,j;
- for(i=t;i>0;i--)
- for(j=123;j>0;j--);
- }
- void DAC0832(unsigned char dat)
- {
- DAILE = 1;
- DAWR1 = 0;
- DAXFER = 0;
- DAWR2 = 0;
- DA_DP = dat;
- }
- void InitTimer0(void)
- {
- TMOD = 0x01;
- TH0 = 0x0F8;
- TL0 = 0x30;
- EA = 1;
- ET0 = 1;
- TR0 = 1;
- }
- void KeyScanf()
- {
- if(!key1)
- {
- delay_ms(10);
- if(!key1)
- {
- i=0;
- Choose=1;
- while(key1==0);
- }
- }
- if(!key2)
- {
- delay_ms(10);
- if(!key2)
- {
- i=0;
- Choose=2;
- while(key2!=0);
- }
- }
- if(!key3)
- {
- delay_ms(10);
- if(!key3)
- {
- i=0;
- Choose=3;
- while(key3==0);
- }
- }
- if(!key4)
- {
- delay_ms(10);
- if(!key4)
- {
- i=0;
- Choose=4;
- while(key4==0);
- }
- }
- }
- void main(void)
- {
- InitTimer0();
- while(1)
- {
- KeyScanf();
- }
- }
- void RectangularWave()
- {
- if(i<129)
- DAC0832(0xff);
- else
- {
- DAC0832(0x00);
- }
- i++;
- }
- void SinWave()
- {
- DAC0832(sin[i]);
- i++;
- }
- void TriangleWave()
- {
- if(i<128)
- DAC0832(stright[i]);
- else
- DAC0832(stright[255-i]);
- ……………………
- …………限于本文篇幅 余下代碼請從51黑下載附件…………
復制代碼
51hei.png (13.44 KB, 下載次數: 73)
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所有資料51hei提供下載:
DAC0832作為信號發生器.rar
(115.77 KB, 下載次數: 45)
2020-6-13 16:34 上傳
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