实现三角波，方波，正弦，锯齿波的切换，这个切换通过拨码开关切换
1.正弦波
正弦波
2.三角波
三角波
不说了 看仿真和源代码
- #include<reg52.h>
- #include<absacc.h>
- #define DAC0832 XBYTE[0x0fff]
- float code table2[]={
- 0x80,0x83,0x85,0x88,0x8A,0x8D,0x8F,0x92,
- 0x94,0x97,0x99,0x9B,0x9E,0xA0,0xA3,0xA5,
- 0xA7,0xAA,0xAC,0xAE,0xB1,0xB3,0xB5,0xB7,
- 0xB9,0xBB,0xBD,0xBF,0xC1,0xC3,0xC5,0xC7,
- 0xC9,0xCB,0xCC,0xCE,0xD0,0xD1,0xD3,0xD4,
- 0xD6,0xD7,0xD8,0xDA,0xDB,0xDC,0xDD,0xDE,
- 0xDF,0xE0,0xE1,0xE2,0xE3,0xE3,0xE4,0xE4,
- 0xE5,0xE5,0xE6,0xE6,0xE7,0xE7,0xE7,0xE7,
- 0xE7,0xE7,0xE7,0xE7,0xE6,0xE6,0xE5,0xE5,
- 0xE4,0xE4,0xE3,0xE3,0xE2,0xE1,0xE0,0xDF,
- 0xDE,0xDD,0xDC,0xDB,0xDA,0xD8,0xD7,0xD6,
- 0xD4,0xD3,0xD1,0xD0,0xCE,0xCC,0xCB,0xC9,
- 0xC7,0xC5,0xC3,0xC1,0xBF,0xBD,0xBB,0xB9,
- 0xB7,0xB5,0xB3,0xB1,0xAE,0xAC,0xAA,0xA7,
- 0xA5,0xA3,0xA0,0x9E,0x9B,0x99,0x97,0x94,
- 0x92,0x8F,0x8D,0x8A,0x88,0x85,0x83,0x80,
- 0x7D,0x7B,0x78,0x76,0x73,0x71,0x6E,0x6C,
- 0x69,0x67,0x65,0x62,0x60,0x5D,0x5B,0x59,
- 0x56,0x54,0x52,0x4F,0x4D,0x4B,0x49,0x47,
- 0x45,0x43,0x41,0x3F,0x3D,0x3B,0x39,0x37,
- 0x35,0x34,0x32,0x30,0x2F,0x2D,0x2C,0x2A,
- 0x29,0x28,0x26,0x25,0x24,0x23,0x22,0x21,
- 0x20,0x1F,0x1E,0x1D,0x1D,0x1C,0x1C,0x1B,
- 0x1B,0x1A,0x1A,0x1A,0x19,0x19,0x19,0x19,
- 0x19,0x19,0x19,0x19,0x1A,0x1A,0x1A,0x1B,
- 0x1B,0x1C,0x1C,0x1D,0x1D,0x1E,0x1F,0x20,
- 0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,
- 0x2A,0x2C,0x2D,0x2F,0x30,0x32,0x34,0x35,
- 0x37,0x39,0x3B,0x3D,0x3F,0x41,0x43,0x45,
- 0x47,0x49,0x4B,0x4D,0x4F,0x52,0x54,0x56,
- 0x59,0x5B,0x5D,0x60,0x62,0x65,0x67,0x69,
- 0x6C,0x6E,0x71,0x73,0x76,0x78,0x7B,0x7D};
- void delay(unsigned int i)//延时函数
- {
- while(i--);
- }
- void fang()//方波
- {
- DAC0832=0;
- delay(15);
- DAC0832=0xff;
- delay(15);
-
- }
- void jvchi()//锯齿波
- {
- unsigned char i;
- for(i=0;i<255;i++)
- {
- DAC0832=i;
- // delay(10);
- }
-
- }
- void tran()//三角波
- {
- unsigned char i;
- for(i=0;i<255;i++)
- {
- DAC0832=i;
- // delay(10);
- }
- for(i=255;i>0;i--)
- {
- DAC0832=i;
- // delay(10);
- }
- }
- void sin()//正弦波
- {
- unsigned int i;
- for(i=0;i<256;i++)
- {
- DAC0832=table2[i];
- // delay(10);
- }
- }
- void main(void)//主函数
- {
- while(1)
- {
- if(P1==0xfe)fang();
- if(P1==0xfd)jvchi();
- if(P1==0xfb)tran();
- if(P1==0xf7)sin();
- if(P1==0xff)DAC0832=0;
- }
-
- }
全部资料51hei下载地址：
简易函数信号发生器的设计.rar
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