229 lines
7.7 KiB
C
229 lines
7.7 KiB
C
/*
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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_rtc.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 double time_offset = 0;
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static long tick_callbacks[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
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static long alarm_interval_id = -1;
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static long alarm_timeout_id = -1;
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static double alarm_interval;
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ext_irq_cb_t alarm_callback;
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ext_irq_cb_t btn_alarm_callback;
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ext_irq_cb_t a2_callback;
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ext_irq_cb_t a4_callback;
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bool _watch_rtc_is_enabled(void) {
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return true;
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}
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void _watch_rtc_init(void) {
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}
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void watch_rtc_set_date_time(watch_date_time date_time) {
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time_offset = EM_ASM_DOUBLE({
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const year = 2020 + (($0 >> 26) & 0x3f);
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const month = ($0 >> 22) & 0xf;
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const day = ($0 >> 17) & 0x1f;
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const hour = ($0 >> 12) & 0x1f;
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const minute = ($0 >> 6) & 0x3f;
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const second = $0 & 0x3f;
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const date = new Date(year, month - 1, day, hour, minute, second);
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return date - Date.now();
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}, date_time.reg);
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}
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watch_date_time watch_rtc_get_date_time(void) {
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watch_date_time retval;
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retval.reg = EM_ASM_INT({
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const date = new Date(Date.now() + $0);
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return date.getSeconds() |
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(date.getMinutes() << 6) |
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(date.getHours() << 12) |
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(date.getDate() << 17) |
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((date.getMonth() + 1) << 22) |
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((date.getFullYear() - 2020) << 26);
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}, time_offset);
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return retval;
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}
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void watch_rtc_register_tick_callback(ext_irq_cb_t callback) {
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watch_rtc_register_periodic_callback(callback, 1);
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}
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void watch_rtc_disable_tick_callback(void) {
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watch_rtc_disable_periodic_callback(1);
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}
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static void watch_invoke_periodic_callback(void *userData) {
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ext_irq_cb_t callback = userData;
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callback();
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resume_main_loop();
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}
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void watch_rtc_register_periodic_callback(ext_irq_cb_t callback, uint8_t frequency) {
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// we told them, it has to be a power of 2.
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if (__builtin_popcount(frequency) != 1) return;
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// this left-justifies the period in a 32-bit integer.
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uint32_t tmp = frequency << 24;
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// now we can count the leading zeroes to get the value we need.
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// 0x01 (1 Hz) will have 7 leading zeros for PER7. 0xF0 (128 Hz) will have no leading zeroes for PER0.
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uint8_t per_n = __builtin_clz(tmp);
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// this also maps nicely to an index for our list of tick callbacks.
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double interval = 1000 / frequency; // in msec
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if (tick_callbacks[per_n] != -1) emscripten_clear_interval(tick_callbacks[per_n]);
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tick_callbacks[per_n] = emscripten_set_interval(watch_invoke_periodic_callback, interval, (void *)callback);
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}
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void watch_rtc_disable_periodic_callback(uint8_t frequency) {
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if (__builtin_popcount(frequency) != 1) return;
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uint8_t per_n = __builtin_clz(frequency << 24);
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if (tick_callbacks[per_n] != -1) {
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emscripten_clear_interval(tick_callbacks[per_n]);
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tick_callbacks[per_n] = -1;
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}
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}
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void watch_rtc_disable_matching_periodic_callbacks(uint8_t mask) {
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for (int i = 0; i < 8; i++) {
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if (tick_callbacks[i] != -1 && (mask & (1 << (7 - i))) != 0) {
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emscripten_clear_interval(tick_callbacks[i]);
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tick_callbacks[i] = -1;
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}
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}
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}
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void watch_rtc_disable_all_periodic_callbacks(void) {
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watch_rtc_disable_matching_periodic_callbacks(0xFF);
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}
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static void watch_invoke_alarm_interval_callback(void *userData) {
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if (alarm_callback) alarm_callback();
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}
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static void watch_invoke_alarm_callback(void *userData) {
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if (alarm_callback) alarm_callback();
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alarm_interval_id = emscripten_set_interval(watch_invoke_alarm_interval_callback, alarm_interval, NULL);
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}
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void watch_rtc_register_alarm_callback(ext_irq_cb_t callback, watch_date_time alarm_time, watch_rtc_alarm_match mask) {
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watch_rtc_disable_alarm_callback();
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switch (mask) {
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case ALARM_MATCH_DISABLED:
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return;
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case ALARM_MATCH_SS:
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alarm_interval = 60 * 1000;
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break;
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case ALARM_MATCH_MMSS:
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alarm_interval = 60 * 60 * 1000;
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break;
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case ALARM_MATCH_HHMMSS:
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alarm_interval = 60 * 60 * 60 * 1000;
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break;
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}
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double timeout = EM_ASM_DOUBLE({
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const now = Date.now();
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const date = new Date(now + $0);
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const hour = ($1 >> 12) & 0x1f;
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const minute = ($1 >> 6) & 0x3f;
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const second = $1 & 0x3f;
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if ($2 == 1) { // SS
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if (second < date.getSeconds()) date.setMinutes(date.getMinutes() + 1);
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date.setSeconds(second);
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} else if ($2 == 2) { // MMSS
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if (second < date.getSeconds()) date.setMinutes(date.getMinutes() + 1);
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if (minute < date.getMinutes()) date.setHours(date.getHours() + 1);
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date.setMinutes(minute, second);
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} else if ($2 == 3) { // HHMMSS
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if (second < date.getSeconds()) date.setMinutes(date.getMinutes() + 1);
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if (minute < date.getMinutes()) date.setHours(date.getHours() + 1);
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if (hour < date.getHours()) date.setDate(date.getDate() + 1);
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date.setHours(hour, minute, second);
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} else {
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throw 'Invalid alarm match mask';
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}
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return date - now;
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}, time_offset, alarm_time.reg, mask);
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alarm_callback = callback;
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alarm_timeout_id = emscripten_set_timeout(watch_invoke_alarm_callback, timeout, NULL);
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}
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void watch_rtc_disable_alarm_callback(void) {
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alarm_callback = NULL;
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alarm_interval = 0;
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if (alarm_timeout_id != -1) {
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emscripten_clear_timeout(alarm_timeout_id);
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alarm_timeout_id = -1;
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}
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if (alarm_interval_id != -1) {
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emscripten_clear_interval(alarm_interval_id);
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alarm_interval_id = -1;
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}
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}
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///////////////////////
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// Deprecated functions
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void watch_set_date_time(struct calendar_date_time date_time) {
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watch_date_time val;
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val.unit.second = date_time.time.sec;
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val.unit.minute = date_time.time.min;
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val.unit.hour = date_time.time.hour;
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val.unit.day = date_time.date.day;
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val.unit.month = date_time.date.month;
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val.unit.year = date_time.date.year - WATCH_RTC_REFERENCE_YEAR;
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watch_rtc_set_date_time(val);
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}
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void watch_get_date_time(struct calendar_date_time *date_time) {
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if (date_time == NULL) return;
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watch_date_time val = watch_rtc_get_date_time();
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date_time->time.sec = val.unit.second;
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date_time->time.min = val.unit.minute;
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date_time->time.hour = val.unit.hour;
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date_time->date.day = val.unit.day;
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date_time->date.month = val.unit.month;
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date_time->date.year = val.unit.year + WATCH_RTC_REFERENCE_YEAR;
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}
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void watch_register_tick_callback(ext_irq_cb_t callback) {
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watch_rtc_register_tick_callback(callback);
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}
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