sin波型.c

DAC0808C DAC转换使用方法

#include"reg51.h"
#include"intrins.h"
#include"MATH.H"
void delay(void);
void main(void)
{
while(1)
{

P2=0x7f;
delay();

P2=0x0a0;
delay();

P2=0x0bf;
delay();

P2=0x0d9;
delay();

P2=0x0ed;
delay();

P2=0x0fa;
delay();

P2=0x0ff;
delay();

P2=0x0fa;
delay();

P2=0x0ed;
delay();

P2=0x0d9;
delay();

P2=0x0bf;
delay();

P2=0x0a0;
delay();

P2=0x7f;
delay();

P2=0x5e;
delay();

P2=0x3f;
delay();

P2=0x25;
delay();

P2=0x11;
delay();

P2=0x4;
delay();

P2=0x0;
delay();

P2=0x4;
delay();

P2=0x11;
delay();

P2=0x25;
delay();

P2=0x3f;
delay();

P2=0x5e;
delay();

}
}

void delay(void)
{
unsigned char i;
for(i=0;i<30;i++)
_nop_();
}