dac0832.c

基于DAC0832的简单波形发生器

//---------------------------------------------------------
//	  DAC0832驱动源文件
//---------------------------------------------------------
#include<reg52.h>
#include<DAC0832.H>
#include<key.h>

uint pinlv  = 1;

static void delay(uint);
void delay(uint x)
{
 while(x--);
}

void sjbo(void)
{
 uchar j;
 for(j=255;j>0;j--)
 {
  DAC0832_dat = j;
  delay(pinlv);
 }
 for(j=0;j<255;j++)
 {
  DAC0832_dat = j;
  delay(pinlv);
 }
}
void juchibo(void)
{
 uchar m;
 for(m=255;m>0;m--)
 {
  DAC0832_dat = m;
  delay(pinlv);
 }
}
void fangbo(void)
{
 DAC0832_dat = 0xff;
 delay(1000*pinlv);
 DAC0832_dat = 0x00;
 delay(1000*pinlv);
}
void zhengxian(void)
{
 uchar num ;
 for(num=0;num<255;num++)
 {
  P0 = TAB_Sin[num];
  delay(pinlv);
 }
}
void main(void)
{
 //uchar key;
 CS1 = 0;
 CS2 = 1;
 Wr = 0;
 while(1)
 {
  sjbo();
 //、key = KeyScan();
  //switch(key)
  //{
  // case 0x81: sjbo();	 break;
  // case 0x41: juchibo(); break;
  // case 0x21: fangbo();	 break;
   //case 0x01: zhengxian();break;
 // }
 }
}