test.#1

C51编程

#include"DA采样调试程序.h"//在选择用定时器方式触发转换时，在主程序里面是不能更新DA的数值的

#define SYSCLK 2000000
sfr16 TMR3RL   = 0x92;
 
sbit  LED = P1^6; 
void Timer3_Init (int counts);
void Timer3_ISR (void);
void main()
{config();
 Timer3_Init (1666);              
DAC0L=0x00;
DAC0H=0x00;
EA=1;

}

void Timer3_ISR (void) interrupt 14
 { int i;
   TMR3CN &= ~(0x80);                     
  for ( i=0;i<1666; i++){DAC0H=0xff;
DAC0H=0x00;}



                           
}

void Timer3_Init (int counts)
{TMR3RL  = -counts;  
}