61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* Copyright © 2020 tyrolyean
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
#include "sound.h"
|
|
#include "sound.h"
|
|
#include "dac.h"
|
|
|
|
#include <avr/pgmspace.h>
|
|
#include <stddef.h>
|
|
|
|
const struct tone_t lonely_road[] PROGMEM =
|
|
{
|
|
{DAC_MODE_SQUARE, -10,500},
|
|
{DAC_MODE_SQUARE, -9,500},
|
|
{DAC_MODE_SQUARE, -8,500},
|
|
{DAC_MODE_SQUARE, -7,500},
|
|
{DAC_MODE_SQUARE, -6,500},
|
|
{DAC_MODE_SQUARE, -5,500},
|
|
{DAC_MODE_SQUARE, -2,500},
|
|
{DAC_MODE_SQUARE, -2,500},
|
|
{DAC_MODE_SQUARE, -2,500},
|
|
{DAC_MODE_SILENT, 0, 0},
|
|
};
|
|
|
|
const struct tone_t **current_track = NULL;
|
|
|
|
void update_sound(){
|
|
|
|
static uint16_t audio_time = 0;
|
|
static size_t tone_pointer = 0x00;
|
|
audio_time++;
|
|
if(!(audio_time >=
|
|
pgm_read_word(&(*current_track)[tone_pointer].length))){
|
|
|
|
tone_pointer++;
|
|
if(pgm_read_word(&(*current_track)[tone_pointer].length) == 0){
|
|
tone_pointer = 0;
|
|
}
|
|
dac_mode = pgm_read_word(
|
|
&(*current_track)[tone_pointer].waveform);
|
|
dac_frequency_deviation = pgm_read_word(
|
|
&(*current_track)[tone_pointer].frequency_deviation);
|
|
|
|
}
|
|
return;
|
|
}
|