datest.c

C8051F BTF005實驗板範例程式

//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include <c8051f000.h>                 // SFR declarations
#include <stdio.h>

//-----------------------------------------------------------------------------
// 16-bit SFR Definitions for 'F00x
//-----------------------------------------------------------------------------

sfr16 DP       = 0x82;                 // data pointer
sfr16 TMR3RL   = 0x92;                 // Timer3 reload value
sfr16 TMR3     = 0x94;                 // Timer3 counter
sfr16 ADC0     = 0xbe;                 // ADC0 data
sfr16 ADC0GT   = 0xc4;                 // ADC0 greater than window
sfr16 ADC0LT   = 0xc6;                 // ADC0 less than window
sfr16 RCAP2    = 0xca;                 // Timer2 capture/reload
sfr16 T2       = 0xcc;                 // Timer2
sfr16 DAC0     = 0xd2;                 // DAC0 data
sfr16 DAC1     = 0xd5;                 // DAC1 data
//-----------------------------------------------------------------------------
// Function PROTOTYPES
//-----------------------------------------------------------------------------
void SYSCLK_Init (void);
//-----------------------------------------------------------------------------
// MAIN Routine
//-----------------------------------------------------------------------------

void main (void){
   WDTCN = 0xde;                       // disable watchdog timer
   WDTCN = 0xad;
   SYSCLK_Init ();                    // initialize oscillator
   REF0CN = 0x03;                  	  // Reference Control Register
//----------------------------------------------------------------------------
// DAC Configuration
//----------------------------------------------------------------------------
	DAC0CN = 0x80;	                  // DAC0 Control Register
	DAC1CN = 0x80;	                  // DAC1 Control Register
    while(1)
    {
	DAC0L = 0xAB;	                  // DAC0 Low Byte Register
	DAC0H = 0x0C;                  	  // DAC0 High Byte Register
	DAC1L = 0xAB;	                  // DAC1 Low Byte Register
	DAC1H = 0x0C;	                  // DAC1 High Byte Register
    }
}
//-----------------------------------------------------------------------------
// Initialization Subroutines
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Oscillator Configuration
//-----------------------------------------------------------------------------
void SYSCLK_Init (void)
{
   int i;                              // delay counter

   OSCXCN = 0x67;                      // start external oscillator with
                                       // 18.432MHz crystal

   for (i=0; i < 256; i++) ;           // XTLVLD blanking interval (>1ms)

   while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle

   OSCICN = 0x88;                      // select external oscillator as SYSCLK
                                       // source and enable missing clock
                                       // detector
}