da.c

新华龙单片机C8051F060的DA转换程序

#include <c8051f060.h>                                                                
sfr16 DAC1 = 0xD2;
void DAC1_Init(void);
void DAC1_OUT(void);
//void SYSCLK_Init(void);
unsigned int i=0;
void main (void)
{
   WDTCN = 0xde;                         
   WDTCN = 0xad;
   //SYSCLK_Init();
   DAC1_Init();

   while(1)
   {
     DAC1_OUT();
   };
}
void DAC1_OUT(void)
{
  char old_SFRPAGE = SFRPAGE;
  SFRPAGE = DAC1_PAGE;
  DAC1=i;
  if(i>4095)i=0;
  i++;
  SFRPAGE = old_SFRPAGE;
}
void DAC1_Init(void)
{	
   char old_SFRPAGE = SFRPAGE;
   SFRPAGE=2;
   REF0CN=0x0f;	

   SFRPAGE = DAC1_PAGE;
   DAC1CN=0x80;       //DAC0使能,DAC0输出更新发生写DAC0H时
   SFRPAGE = old_SFRPAGE;
}

/*void SYSCLK_Init (void)
{
   char old_SFRPAGE = SFRPAGE;
   int j; 
   SFRPAGE = CONFIG_PAGE;              // Switch to Configuration Page
   OSCXCN = 0x67;                     
   for (j=0; j <5000; j++) ;           // XTLVLD blanking interval (>1ms)
   while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle
   RSTSRC = 0x04;                      // enable missing clock detector reset
   CLKSEL = 0x01;                      // change to external crystal
   OSCICN = 0x80;                      // disable internal oscillator
   SFRPAGE = old_SFRPAGE;              // restore SFRPAGE
}
*/