102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
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#include <stdint.h>
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#include "system.h"
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#include "display.h"
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#include "systick.h"
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#include "button.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "ui.h"
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#include "timer.h"
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#include "led.h"
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#define MAX_PATTERN_LEN 64
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#define DRUMS_KICK (1 << 0)
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#define DRUMS_HIHAT (1 << 1)
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#define DRUMS_SNARE (1 << 2)
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#define DRUMS_TOM1 (1 << 3)
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#define DRUMS_TOM2 (1 << 4)
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#define DRUMS_CYM (1 << 6)
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#define DRUMS_CLAP (1 << 7)
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#define TRACKS 8
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static uint32_t pattern[MAX_PATTERN_LEN] = { DRUMS_KICK, DRUMS_HIHAT, DRUMS_SNARE, DRUMS_HIHAT, DRUMS_KICK, DRUMS_KICK, DRUMS_SNARE, DRUMS_HIHAT };
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//static uint32_t pattern[MAX_PATTERN_LEN] = { DRUMS_KICK, DRUMS_KICK, DRUMS_KICK, DRUMS_KICK, DRUMS_KICK, DRUMS_KICK, DRUMS_SNARE, DRUMS_HIHAT };
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static uint32_t pattern_len = 8;
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static uint32_t pattern_pos = 0;
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static unsigned char *dsample[TRACKS] = {};
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static unsigned int dsample_len[TRACKS] = {};
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void beat_cb(uint32_t b)
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{
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uint32_t key = pattern[pattern_pos];
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int i;
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for (i = 0; i < TRACKS; i++) {
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if ((key & (1 << i)) == (1 << i)) {
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if (dsample[i]) {
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while(dac_is_busy())
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dac_stop();
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dac_play_direct(dsample[i], dsample_len[i]);
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break;
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}
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}
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}
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pattern_pos++;
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if (pattern_pos >= pattern_len) {
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pattern_pos = 0;
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}
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led_beat((pattern_pos % 8) + 1);
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}
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void drums_init(void)
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{
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dsample[0] = drumkit_0_au;
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dsample[1] = drumkit_1_au;
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dsample[2] = drumkit_2_au;
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dsample[3] = drumkit_3_au;
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dsample[4] = drumkit_4_au;
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dsample[5] = drumkit_5_au;
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dsample[6] = drumkit_6_au;
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dsample_len[0] = drumkit_0_au_len;
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dsample_len[1] = drumkit_1_au_len;
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dsample_len[2] = drumkit_2_au_len;
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dsample_len[3] = drumkit_3_au_len;
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dsample_len[4] = drumkit_4_au_len;
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dsample_len[5] = drumkit_5_au_len;
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dsample_len[6] = drumkit_6_au_len;
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}
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void drums_start(void)
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{
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timer_set_beat_callback(beat_cb);
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}
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void drums_stop(void)
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{
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timer_clear_beat_callback();
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}
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void drums_set_pattern_len(int l)
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{
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pattern_len = l;
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timer_set_beat(1);
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}
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void drums_set(uint32_t track, int pos)
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{
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pattern[pos] |= track;
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}
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void drums_clear(uint32_t track, int pos)
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{
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pattern[pos] &= ~track;
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}
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