delay.h

#ifndef _DELAY_H
#define _DELAY_H

#include <stdint.h>
#include <util/delay_basic.h>
#include "watchdog.h"

#define WAITING_DELAY 100

#if F_CPU < 4000000UL
#  error Delay functions only work with F_CPU >= 4000000UL 
#endif

// microsecond delay, does NOT reset WDT if feature enabled
void delay_us(uint16_t delay);

// microsecond delay, does reset WDT if feature enabled
void _delay(uint32_t delay);

// millisecond delay, does reset WDT if feature enabled
void _delay_ms(uint32_t delay);

// microsecond timer, does reset WDT if feature enabled
// 0 results in no real delay, but the watchdog
// reset is called if the feature is enabled
static void delay(uint32_t) __attribute__ ((always_inline));
inline void delay(uint32_t d) {
  if (d > (65536L / (F_CPU / 4000000L))) _delay(d);
  else {
    wd_reset();
    if( d ) {
      _delay_loop_2(d * (F_CPU / 4000000L));
      wd_reset();
    }
  }
}

// millisecond timer, does reset WDT if feature enabled
// 0 results in no real delay, but the watchdog
// reset is called if the feature is enabled
static void delay_ms(uint32_t) __attribute__ ((always_inline));
inline void delay_ms(uint32_t d) {
  if (d > 65)
    _delay_ms(d);
  else
    delay(d * 1000);
 }
#endif /* _DELAY_H */

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