DAC0832在Proteus中软件仿真生成波形(矩形-三角-锯齿-正弦).doc

1.电路图

2.锯齿波

3.三角波

4．矩形波

5.正弦波

6.C代码
#include
#include
#define DAC0832 XBYTE[0x7fff]
#define uchar unsigned char
#define uint unsigned int
//生成波形期间对应的按键要一直按下
sbit key1=P1^0;
sbit key2=P1^1;
sbit key3=P1^2;
sbit key4=P1^3;
//下面的编码定义是由正弦波数据生成器所生成，可以百度下载
uchar code sin_tab[]=
{
0x7F,0x82,0x85,0x88,0x8B,0x8F,0x92,0x95,0x98,0x9B,0x9E,0xA1,0xA4,0xA7,0xAA,0xAD
,0xB0,0xB3,0xB6,0xB8,0xBB,0xBE,0xC1,0xC3,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7
,0xD9,0xDB,0xDD,0xE0,0xE2,0xE4,0xE5,0xE7,0xE9,0xEB,0xEC,0xEE,0xEF,0xF1,0xF2,0xF4
,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFB,0xFC,0xFD,0xFD,0xFE,0xFE,0xFE,0xFE,0xFE
,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFD,0xFD,0xFC,0xFB,0xFB,0xFA,0xF9,0xF8,0xF7,0xF6
,0xF5,0xF4,0xF2,0xF1,0xEF,0xEE,0xEC,0xEB,0xE9,0xE7,0xE5,0xE4,0xE2,0xE0,0xDD,0xDB
,0xD9,0xD7,0xD5,0xD2,0xD0,0xCD,0xCB,0xC8,0xC6,0xC3,0xC1,0xBE,0xBB,0xB8,0xB6,0xB3
,0xB0,0xAD,0xAA,0xA7,0xA4,0xA1,0x9E,0x9B,0x98,0x95,0x92,0x8F,0x8B,0x88,0x85,0x82
,0x7F,0x7C,0x79,0x76,0x73,0x6F,0x6C,0x69,0x66,0x63,0x60,0x5D,0x5A,0x57,0x54,0x51
,0x4E,0x4B,0x48,0x46,0x43,0x40,0x3D,0x3B,0x38,0x36,0x33,0x31,0x2E,0x2C,0x29,0x27
,0x25,0x23,0x21,0x1E,0x1C,0x1A,0x190x17,0x15,0x13,0x12,0x10,0x0F,0x0D,0x0C,0x0A
,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,0x0F,0x10,0x12,0x13,0x15,0x17,0x19,0x1A,0x1C,0x1E,0x21,0x23
,0x25,0x27,0x29,0x2C,0x2E,0x31,0x33,0x36,0x38,0x3B,0x3D,0x40,0x43,0x46,0x48,0x4B
,0x4E,0x51,0x54,0x57,0x5A,0x5D,0x60,0x63,0x66,0x69,0x6C,0x6F,0x73,0x76,0x79,0x7C
};
//
void delayms(uint xms)
{
uint i,j;
for (i=xms;i>0;i--)
for (j=110;j>0;j--)
;
}
//
void juxing()
{
uchar i;
for (i=0;i<0xff;i++)
DAC0832=0;
for (i=0;i<0xff;i++)
DAC0832=0xff;
}
//
void sanjiao()
{
uchar i;
for (i=0;i<0xff;i++)
DAC0832=i;
for (i=0xff;i>0;i--)
DAC0832=i;
}
//
void juchi()
{
uchar i;
for (i=0;i<0xff;i++)
{
DAC0832=i;
}
}
//
void sin_func()
{
uchar i;
for (i=0;i<0xff;i++)
{
DAC0832=sin_tab[i];
if(i==0xff)
i=0;
}
}
//
void main ()
{
while (1)
{
if(key1==0)
{
delayms(10);//延时去抖动
if(key1==0)
{
while (!key1)
{
juxing();
}
}
}
//
if(key2==0)
{
delayms(10);
if(key2==0)
{
while (!key2)
{
sanjiao();
}
}
}
//
if(key3==0)
{
delayms(10);
if(key3==0)
{
while (!key3)
{
juchi();
}
}
}
//
if(key4==0)
{
delayms(10);
if(key4==0)
{
while (!key4)
{
sin_func();
}
}
}
}
}