#include"includes.h"
unsigned char ref=0x80;
extern unsigned char flag;
unsigned int add;
void main()
{
     SYSCLK_Init();
	 PORT_Init();
	 T2_Init();
	 

	 EA=0;       //關總中斷
	 ET2=1;      //定時器2中斷允許
	 EA=1;       //開總中斷
	 flag=0;

//	 dac_freq(0x03e8) ;


	 while(1)
	 {
	   for(add=0;add<256;add++)
	   dac_senddata(add);
	  }


}