Subversion Repositories MK3Mag

/*****************************************************************************
 
*****************************************************************************/
#include "main.h"
volatile unsigned int CountMilliseconds = 0;
volatile unsigned char Timer0Overflow;
unsigned int I2C_Timeout = 0;
unsigned int SIO_Timeout = 0;

 
enum {
  STOP             = 0,
  CK               = 1,
  CK8              = 2,
  CK64             = 3,
  CK256            = 4,
  CK1024           = 5,
  T0_FALLING_EDGE  = 6,
  T0_RISING_EDGE   = 7
};


SIGNAL(SIG_OVERFLOW0)
{
 static unsigned char cnt;
 static unsigned int cmps_cnt;
 TCNT0 -= 97;  // reload
 Timer0Overflow++;

 if(++cmps_cnt == 380)
 {
  PORTB |= 0x04;
  cmps_cnt = 0;
 }
 else
 if(cmps_cnt == PwmHeading)
 {
  PORTB &= ~0x04;
 }
 
 if(!--cnt)
  {
   cnt = 10;
   CountMilliseconds += 1;
   if(I2C_Timeout) I2C_Timeout--;
   if(SIO_Timeout) SIO_Timeout--;
  }
}


void Timer0_Init(void)
{
 TCCR0B = TIMER_TEILER;  // Starten des Timers
// TCNT0 = 100;  // reload
 TIM0_START;
 TIMER2_INT_ENABLE;
}


unsigned int SetDelay(unsigned int t)
{
  return(CountMilliseconds + t - 1);                                            
}

char CheckDelay (unsigned int t)
{
  return(((t - CountMilliseconds) & 0x8000) >> 8);
}

void Delay_ms(unsigned int w)
{
 unsigned int akt;
 akt = SetDelay(w);
 while (!CheckDelay(akt));
}