Question

单片机的D/A转换C语言如何实现

Answer 1

{
初始化DA控制器;
写入要转换的数字D;
开始转换;
等待转换结束;
}

Answer 2

啥单片机啊？ 这样的问题让人很无语

Answer 3

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
sbit dacs=P3^2;
sbit dawr=P3^6;
sbit beep=P3^2;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);//延时1ms
}
void main()
{
uchar flag,val;
dula=0;
wela=0;
dacs=0;
dawr=0;
P0=0;
while(1)
{
if(flag==0)
{
val+=5;
P0=val;
if(val==255)
{
flag=1;
beep=0;
delay(100);
beep=1;
}
delay(50);
}
else
{
val-=5;
P0=val;
if(val==0)
{
flag=0;
beep=0;
delay(100);
beep=1;
}
delay(50);
}

}
}