Colony

/**

 * Copyright (c) 2007 Colony Project

 * Permission is hereby granted, free of charge, to any person

 * obtaining a copy of this software and associated documentation

 * files (the "Software"), to deal in the Software without

 * copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following

 * conditions:

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * @see buzzer_init, buzzer_set_freq, buzzer_off

 **/

void buzzer_set_val(unsigned int buzz_value)

	TCCR2 = _BV(COM20) | _BV(WGM21)  | _BV(CS22);

	DDRB |= _BV(DDB7);

	OCR2 = buzz_value;

void buzzer_set_freq(unsigned int buzz_freq)

{

  int buzz_value;

  buzz_value = 62500/buzz_freq - 1;

  if(buzz_value > 255){

  }else if(buzz_value < 0){

    buzz_value = 0;

  }

  buzzer_set_val(buzz_value);

}

 *

 * @see buzzer_init, buzzer_set_freq

 **/

  buzzer_set_freq(buzz_freq);

  delay_ms(ms);

  buzzer_off();

{

  // Disable clock, to halt counter

  TCCR2 &= 0xF8;//0b11111000;

  // Set buzzer pin low in case it's high

  PORTB &= 0xBF;//0b10111111;

}