47 lines
852 B
C
47 lines
852 B
C
#include <pentabug/music.h>
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#include <avr/io.h>
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#define __DELAY_BACKWARD_COMPATIBLE__
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#include <util/delay.h>
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#include <pentabug/timer.h>
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#include <pentabug/lifecycle.h>
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static void tune(void) {
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PORTB ^= 1 << 7;
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}
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void set_note(uint16_t note, uint8_t octave) {
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if(note != NOTE_PAUSE) {
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start_timer(PRESCALE_8, note >> octave, tune);
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} else {
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stop_timer();
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}
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}
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void stop_note(void) {
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stop_timer();
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}
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void play_melody(uint16_t notes[], size_t len, uint8_t octave, int speed) {
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int pause = speed / 20;
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size_t i;
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// TODO: get away from the int to double conversion to free half of our flash ...
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for(i = 0; i < len; ++i) {
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if(notes[i] == MLDY_PAUSE) {
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++i;
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_delay_ms(notes[i]);
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} else {
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set_note(notes[i], octave);
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test_stop_app();
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_delay_ms(speed);
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stop_note();
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test_stop_app();
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_delay_ms(pause);
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}
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}
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}
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