Subversion Repositories FlightCtrl

#include "main.h"
volatile unsigned long cnt_ms = 0;
volatile unsigned int CountMilliseconds = 0;
volatile unsigned int Count8Khz = 0;

volatile static unsigned int tim_main;
volatile unsigned char UpdateMotor = 0;
volatile unsigned int cntKompass = 0;
volatile unsigned int beeptime = 0;
unsigned int BeepMuster = 0xffff;
int ServoValue = 0;
extern void MM3_Update(void);

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


SIGNAL (SIG_OVERFLOW0)    // 8kHz
{
  static unsigned char cnt_1ms = 1,cnt = 0;
  unsigned char pieper_ein = 0;
 
  Count8Khz++;
 
  if(!cnt--)
  {
    cnt = 9;
    cnt_1ms++;
    cnt_1ms %= 2;
    if(!cnt_1ms)
    {
      UpdateMotor = 1;
    }
    CountMilliseconds++;
    cnt_ms++;
    // update compass value if this option is enabled in the settings
#ifdef USE_COMPASS
    MM3_Update(); // read out mm3 board
#endif
  }  
 
  if(beeptime > 1)
  {
    beeptime--;      
    if(beeptime & BeepMuster)
    {
      pieper_ein = 1;
    }
    else pieper_ein = 0;
  }
  else
  {
    pieper_ein = 0;
    BeepMuster = 0xffff;
  }
 
  if(pieper_ein)
  {
    PORTC |= (1<<7); // Speaker an PORTC.7
  }
  else  
  {
    PORTC &= ~(1<<7);
  }
 
#if 0
  if(PINC & 0x10)
  {
    cntKompass++;
  }
  else
  {
    if((cntKompass) && (cntKompass < 4000))
    {
      if(cntKompass < 10)
      {
        cntKompass = 10;
      }
      KompassValue = (((int) cntKompass-10) * 36) / 35;
    }
    cntKompass = 0;
  }
#endif
}


void Timer_Init(void)
{
  tim_main = SetDelay(10);
  TCCR0B = CK8;
  TCCR0A = (1<<COM0A1)|(1<<COM0B1)|3;//fast PWM
  OCR0A =  0;
  OCR0B = 120;
  TCNT0 = (unsigned char)-TIMER_RELOAD_VALUE;  // reload
 
  TCCR2A=(1<<COM2A1)|(1<<COM2A0)|3;
  TCCR2B=(0<<CS20)|(1<<CS21)|(1<<CS22);
  TIMSK2 |= _BV(OCIE2A);
 
  TIMSK0 |= _BV(TOIE0);
  OCR2A = 10;
  TCNT2 = 0;
}

// -----------------------------------------------------------------------

unsigned int SetDelay (unsigned int t)
{
  //  TIMSK0 &= ~_BV(TOIE0);
  return(CountMilliseconds + t + 1);                                            
  //  TIMSK0 |= _BV(TOIE0);
}

// -----------------------------------------------------------------------
char CheckDelay(unsigned int t)
{
  //  TIMSK0 &= ~_BV(TOIE0);
  return(((t - CountMilliseconds) & 0x8000) >> 9);
  //  TIMSK0 |= _BV(TOIE0);
}

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

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

// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++               
//  Servo ansteuern
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++               
SIGNAL(SIG_OUTPUT_COMPARE2A)
{
  static unsigned char timer = 10;
  if(!timer--)  
  {

    TCCR2A=(1<<COM2A1)|(0<<COM2A0)|3;
    if(ServoValue < EE_Parameter.ServoNickMin)
    {
      ServoValue = EE_Parameter.ServoNickMin;
    }
    if(ServoValue > EE_Parameter.ServoNickMax)
    {
      ServoValue = EE_Parameter.ServoNickMax;
    }  
   
    OCR2A = ServoValue;
    timer = EE_Parameter.ServoNickRefresh;
  }
  else
  {
    TCCR2A =3;
    PORTD&=~0x80;
  }
}