consolidate buzzer and LED into TCC file
This commit is contained in:
joeycastillo
222
watch-library/simulator/watch/watch_tcc.c
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222
watch-library/simulator/watch/watch_tcc.c
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/*
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* MIT License
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*
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* Copyright (c) 2020 Joey Castillo
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "watch_buzzer.h"
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#include "watch_private_buzzer.h"
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#include "watch_main_loop.h"
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#include <emscripten.h>
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#include <emscripten/html5.h>
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static bool buzzer_enabled = false;
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static uint32_t buzzer_period;
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void cb_watch_buzzer_seq(void *userData);
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static uint16_t _seq_position;
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static int8_t _tone_ticks, _repeat_counter;
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static long _em_interval_id = 0;
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static int8_t *_sequence;
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static void (*_cb_finished)(void);
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void _watch_enable_tcc(void) {}
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static inline void _em_interval_stop() {
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emscripten_clear_interval(_em_interval_id);
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_em_interval_id = 0;
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}
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void watch_buzzer_play_sequence(int8_t *note_sequence, void (*callback_on_end)(void)) {
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if (_em_interval_id) _em_interval_stop();
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watch_set_buzzer_off();
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_sequence = note_sequence;
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_cb_finished = callback_on_end;
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_seq_position = 0;
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_tone_ticks = 0;
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_repeat_counter = -1;
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// prepare buzzer
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watch_enable_buzzer();
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// initiate 64 hz callback
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_em_interval_id = emscripten_set_interval(cb_watch_buzzer_seq, (double)(1000/64), (void *)NULL);
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}
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void cb_watch_buzzer_seq(void *userData) {
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// callback for reading the note sequence
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(void) userData;
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if (_tone_ticks == 0) {
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if (_sequence[_seq_position] < 0 && _sequence[_seq_position + 1]) {
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// repeat indicator found
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if (_repeat_counter == -1) {
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// first encounter: load repeat counter
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_repeat_counter = _sequence[_seq_position + 1];
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} else _repeat_counter--;
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if (_repeat_counter > 0)
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// rewind
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if (_seq_position > _sequence[_seq_position] * -2)
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_seq_position += _sequence[_seq_position] * 2;
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else
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_seq_position = 0;
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else {
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// continue
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_seq_position += 2;
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_repeat_counter = -1;
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}
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}
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if (_sequence[_seq_position] && _sequence[_seq_position + 1]) {
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// read note
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BuzzerNote note = _sequence[_seq_position];
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if (note == BUZZER_NOTE_REST) {
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watch_set_buzzer_off();
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} else {
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watch_set_buzzer_period(NotePeriods[note]);
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watch_set_buzzer_on();
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}
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// set duration ticks and move to next tone
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_tone_ticks = _sequence[_seq_position + 1];
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_seq_position += 2;
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} else {
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// end the sequence
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watch_buzzer_abort_sequence();
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if (_cb_finished) _cb_finished();
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}
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} else _tone_ticks--;
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}
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void watch_buzzer_abort_sequence(void) {
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// ends/aborts the sequence
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if (_em_interval_id) _em_interval_stop();
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watch_set_buzzer_off();
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}
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void watch_enable_buzzer(void) {
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buzzer_enabled = true;
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buzzer_period = NotePeriods[BUZZER_NOTE_A4];
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EM_ASM({
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Module['audioContext'] = new (window.AudioContext || window.webkitAudioContext)();
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});
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}
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void watch_set_buzzer_period(uint32_t period) {
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if (!buzzer_enabled) return;
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buzzer_period = period;
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}
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void watch_disable_buzzer(void) {
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buzzer_enabled = false;
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buzzer_period = NotePeriods[BUZZER_NOTE_A4];
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EM_ASM({
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if (Module['audioContext']) {
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Module['audioContext'].close();
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Module['audioContext'] = null;
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}
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});
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}
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void watch_set_buzzer_on(void) {
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if (!buzzer_enabled) return;
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EM_ASM({
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const audioContext = Module['audioContext'];
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if (!audioContext) return;
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if (!(audioContext._oscillator && audioContext._gain)) {
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const oscillator = audioContext.createOscillator();
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const gain = audioContext.createGain();
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oscillator.type = 'triangle';
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oscillator.connect(gain);
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gain.connect(audioContext.destination);
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oscillator.start(0);
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audioContext._oscillator = oscillator;
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audioContext._gain = gain;
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}
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audioContext._oscillator.frequency.value = 1e6/$0;
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audioContext._gain.gain.value = volumeGain;
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}, buzzer_period);
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}
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void watch_set_buzzer_off(void) {
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if (!buzzer_enabled) return;
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EM_ASM({
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const audioContext = Module['audioContext'];
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if (audioContext && audioContext._gain) {
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audioContext._gain.gain.value = 0;
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}
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});
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}
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void watch_buzzer_play_note(BuzzerNote note, uint16_t duration_ms) {
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if (note == BUZZER_NOTE_REST) {
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watch_set_buzzer_off();
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} else {
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watch_set_buzzer_period(NotePeriods[note]);
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watch_set_buzzer_on();
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}
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main_loop_sleep(duration_ms);
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watch_set_buzzer_off();
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}
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void watch_enable_leds(void) {}
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void watch_disable_leds(void) {}
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void watch_set_led_color(uint8_t red, uint8_t green) {
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EM_ASM({
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// the watch svg contains an feColorMatrix filter with id ledcolor
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// and a green svg gradient that mimics the led being on
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// https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feColorMatrix
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// this changes the color of the gradient to match the red+green combination
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let filter = document.getElementById("ledcolor");
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let color_matrix = filter.children[0].values.baseVal;
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color_matrix[1].value = $0 / 255; // red value
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color_matrix[6].value = $1 / 255; // green value
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document.getElementById('light').style.opacity = Math.min(255, $0 + $1) / 255;
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}, red, green);
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}
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void watch_set_led_color_rgb(uint8_t red, uint8_t green, uint8_t blue) {
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(void) blue;
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watch_set_led_color(red, green);
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}
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void watch_set_led_red(void) {
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watch_set_led_color(255, 0);
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}
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void watch_set_led_green(void) {
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watch_set_led_color(0, 255);
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}
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void watch_set_led_yellow(void) {
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watch_set_led_color(255, 255);
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}
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void watch_set_led_off(void) {
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watch_set_led_color(0, 0);
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}
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