da转换.c

DAC0832的DA转换ASm汇编子程序

#include<reg51.h>
#include<intrins.h>
#define uchar  unsigned char
#define uint   ensigned int
#define da_data  P2
#define     led  P1
sbit    DATAPASS  = P0^0 ;
sbit    _WR        = P0^1 ;


mian()
{
while(1)
{
DATAPASS = 0;
_WR		 = 0;
da_data  = 0xaa;
led	     = ~(da_data);
_nop_();_nop_();_nop_();_nop_();
}
}