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sensor-watch/movement/movement.c
Joey Castillo 0bb267c702 movement: start time zone list at UTC
2022-02-13 11:25:28 -05:00

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/*
* MIT License
*
* Copyright (c) 2022 Joey Castillo
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include "watch.h"
#include "movement.h"
#include "movement_config.h"
#if __EMSCRIPTEN__
#include <emscripten.h>
#endif
movement_state_t movement_state;
void * watch_face_contexts[MOVEMENT_NUM_FACES];
watch_date_time scheduled_tasks[MOVEMENT_NUM_FACES];
const int32_t movement_le_inactivity_deadlines[8] = {INT_MAX, 3600, 7200, 21600, 43200, 86400, 172800, 604800};
const int16_t movement_timeout_inactivity_deadlines[4] = {60, 120, 300, 1800};
movement_event_t event;
const int16_t movement_timezone_offsets[] = {
0, // 0 : 0:00:00 (UTC)
60, // 1 : 1:00:00 (Central European Time)
120, // 2 : 2:00:00 (South African Standard Time)
180, // 3 : 3:00:00 (Arabia Standard Time)
210, // 4 : 3:30:00 (Iran Standard Time)
240, // 5 : 4:00:00 (Georgia Standard Time)
270, // 6 : 4:30:00 (Afghanistan Time)
300, // 7 : 5:00:00 (Pakistan Standard Time)
330, // 8 : 5:30:00 (Indian Standard Time)
345, // 9 : 5:45:00 (Nepal Time)
360, // 10 : 6:00:00 (Kyrgyzstan time)
390, // 11 : 6:30:00 (Myanmar Time)
420, // 12 : 7:00:00 (Thailand Standard Time)
480, // 13 : 8:00:00 (China Standard Time, Australian Western Standard Time)
525, // 14 : 8:45:00 (Australian Central Western Standard Time)
540, // 15 : 9:00:00 (Japan Standard Time, Korea Standard Time)
570, // 16 : 9:30:00 (Australian Central Standard Time)
600, // 17 : 10:00:00 (Australian Eastern Standard Time)
630, // 18 : 10:30:00 (Lord Howe Standard Time)
660, // 19 : 11:00:00 (Solomon Islands Time)
720, // 20 : 12:00:00 (New Zealand Standard Time)
765, // 21 : 12:45:00 (Chatham Standard Time)
780, // 22 : 13:00:00 (Tonga Time)
825, // 23 : 13:45:00 (Chatham Daylight Time)
840, // 24 : 14:00:00 (Line Islands Time)
-720, // 25 : -12:00:00 (Baker Island Time)
-660, // 26 : -11:00:00 (Niue Time)
-600, // 27 : -10:00:00 (Hawaii-Aleutian Standard Time)
-570, // 28 : -9:30:00 (Marquesas Islands Time)
-540, // 29 : -9:00:00 (Alaska Standard Time)
-480, // 30 : -8:00:00 (Pacific Standard Time)
-420, // 31 : -7:00:00 (Mountain Standard Time)
-360, // 32 : -6:00:00 (Central Standard Time)
-300, // 33 : -5:00:00 (Eastern Standard Time)
-270, // 34 : -4:30:00 (Venezuelan Standard Time)
-240, // 35 : -4:00:00 (Atlantic Standard Time)
-210, // 36 : -3:30:00 (Newfoundland Standard Time)
-180, // 37 : -3:00:00 (Brasilia Time)
-150, // 38 : -2:30:00 (Newfoundland Daylight Time)
-120, // 39 : -2:00:00 (Fernando de Noronha Time)
-60, // 40 : -1:00:00 (Azores Standard Time)
};
const char movement_valid_position_0_chars[] = " AaBbCcDdEeFGgHhIiJKLMNnOoPQrSTtUuWXYZ-='+\\/0123456789";
const char movement_valid_position_1_chars[] = " ABCDEFHlJLNORTtUX-='01378";
void cb_mode_btn_interrupt(void);
void cb_light_btn_interrupt(void);
void cb_alarm_btn_interrupt(void);
void cb_alarm_btn_extwake(void);
void cb_alarm_fired(void);
void cb_fast_tick(void);
void cb_tick(void);
static inline void _movement_reset_inactivity_countdown(void) {
movement_state.le_mode_ticks = movement_le_inactivity_deadlines[movement_state.settings.bit.le_interval];
movement_state.timeout_ticks = movement_timeout_inactivity_deadlines[movement_state.settings.bit.to_interval];
}
static inline void _movement_enable_fast_tick_if_needed(void) {
if (!movement_state.fast_tick_enabled) {
movement_state.fast_ticks = 0;
watch_rtc_register_periodic_callback(cb_fast_tick, 128);
}
}
static inline void _movement_disable_fast_tick_if_possible(void) {
if ((movement_state.light_ticks == -1) &&
(movement_state.alarm_ticks == -1) &&
((movement_state.light_down_timestamp + movement_state.mode_down_timestamp + movement_state.alarm_down_timestamp) == 0)) {
movement_state.fast_tick_enabled = false;
watch_rtc_disable_periodic_callback(128);
}
}
static void _movement_handle_background_tasks(void) {
for(uint8_t i = 0; i < MOVEMENT_NUM_FACES; i++) {
// For each face, if the watch face wants a background task...
if (watch_faces[i].wants_background_task != NULL && watch_faces[i].wants_background_task(&movement_state.settings, watch_face_contexts[i])) {
// ...we give it one. pretty straightforward!
movement_event_t background_event = { EVENT_BACKGROUND_TASK, 0 };
watch_faces[i].loop(background_event, &movement_state.settings, watch_face_contexts[i]);
}
}
movement_state.needs_background_tasks_handled = false;
}
static void _movement_handle_scheduled_tasks(void) {
watch_date_time date_time = watch_rtc_get_date_time();
uint8_t num_active_tasks = 0;
for(uint8_t i = 0; i < MOVEMENT_NUM_FACES; i++) {
if (scheduled_tasks[i].reg) {
if (scheduled_tasks[i].reg == date_time.reg) {
scheduled_tasks[i].reg = 0;
movement_event_t background_event = { EVENT_BACKGROUND_TASK, 0 };
watch_faces[i].loop(background_event, &movement_state.settings, watch_face_contexts[i]);
} else {
num_active_tasks++;
}
}
}
if (num_active_tasks == 0) {
movement_state.has_scheduled_background_task = false;
} else {
_movement_reset_inactivity_countdown();
}
}
void movement_request_tick_frequency(uint8_t freq) {
// Movement uses the 128 Hz tick internally
if (freq == 128) return;
// Movement requires at least a 1 Hz tick.
// If we are asked for an invalid frequency, default back to 1 Hz.
if (freq == 0 || __builtin_popcount(freq) != 1) freq = 1;
// disable all callbacks except the 128 Hz one
watch_rtc_disable_matching_periodic_callbacks(0xFE);
movement_state.subsecond = 0;
movement_state.tick_frequency = freq;
watch_rtc_register_periodic_callback(cb_tick, freq);
}
void movement_illuminate_led(void) {
if (movement_state.settings.bit.led_duration) {
watch_set_led_color(movement_state.settings.bit.led_red_color ? (0xF | movement_state.settings.bit.led_red_color << 4) : 0,
movement_state.settings.bit.led_green_color ? (0xF | movement_state.settings.bit.led_green_color << 4) : 0);
movement_state.light_ticks = (movement_state.settings.bit.led_duration * 2 - 1) * 128;
_movement_enable_fast_tick_if_needed();
}
}
void movement_move_to_face(uint8_t watch_face_index) {
movement_state.watch_face_changed = true;
movement_state.next_watch_face = watch_face_index;
}
void movement_move_to_next_face(void) {
movement_move_to_face((movement_state.current_watch_face + 1) % MOVEMENT_NUM_FACES);
}
void movement_schedule_background_task(watch_date_time date_time) {
watch_date_time now = watch_rtc_get_date_time();
if (date_time.reg > now.reg) {
movement_state.has_scheduled_background_task = true;
scheduled_tasks[movement_state.current_watch_face].reg = date_time.reg;
}
}
void movement_cancel_background_task(void) {
scheduled_tasks[movement_state.current_watch_face].reg = 0;
bool other_tasks_scheduled = false;
for(uint8_t i = 0; i < MOVEMENT_NUM_FACES; i++) {
if (scheduled_tasks[i].reg != 0) {
other_tasks_scheduled = true;
break;
}
}
movement_state.has_scheduled_background_task = other_tasks_scheduled;
}
void movement_play_signal(void) {
watch_buzzer_play_note(BUZZER_NOTE_C8, 75);
watch_buzzer_play_note(BUZZER_NOTE_REST, 100);
watch_buzzer_play_note(BUZZER_NOTE_C8, 100);
}
void movement_play_alarm(void) {
movement_state.alarm_ticks = 128 * 5 - 80; // 80 ticks short of 5 seconds, or 4.375 seconds (our beep is 0.375 seconds)
_movement_enable_fast_tick_if_needed();
}
uint8_t movement_claim_backup_register(void) {
if (movement_state.next_available_backup_register >= 8) return 0;
return movement_state.next_available_backup_register++;
}
void app_init(void) {
memset(&movement_state, 0, sizeof(movement_state));
movement_state.settings.bit.led_green_color = 0xF;
movement_state.settings.bit.button_should_sound = true;
movement_state.settings.bit.le_interval = 1;
movement_state.settings.bit.led_duration = 1;
movement_state.light_ticks = -1;
movement_state.alarm_ticks = -1;
movement_state.next_available_backup_register = 4;
_movement_reset_inactivity_countdown();
#if __EMSCRIPTEN__
int32_t time_zone_offset = EM_ASM_INT({
return -new Date().getTimezoneOffset();
});
for (int i = 0, count = sizeof(movement_timezone_offsets) / sizeof(movement_timezone_offsets[0]); i < count; i++) {
if (movement_timezone_offsets[i] == time_zone_offset) {
movement_state.settings.bit.time_zone = i;
break;
}
}
#endif
}
void app_wake_from_backup(void) {
movement_state.settings.reg = watch_get_backup_data(0);
}
void app_setup(void) {
watch_store_backup_data(movement_state.settings.reg, 0);
static bool is_first_launch = true;
if (is_first_launch) {
for(uint8_t i = 0; i < MOVEMENT_NUM_FACES; i++) {
watch_face_contexts[i] = NULL;
scheduled_tasks[i].reg = 0;
is_first_launch = false;
}
// set up the 1 minute alarm (for background tasks and low power updates)
watch_date_time alarm_time;
alarm_time.reg = 0;
alarm_time.unit.second = 59; // after a match, the alarm fires at the next rising edge of CLK_RTC_CNT, so 59 seconds lets us update at :00
watch_rtc_register_alarm_callback(cb_alarm_fired, alarm_time, ALARM_MATCH_SS);
}
if (movement_state.le_mode_ticks != -1) {
watch_disable_extwake_interrupt(BTN_ALARM);
watch_enable_external_interrupts();
watch_register_interrupt_callback(BTN_MODE, cb_mode_btn_interrupt, INTERRUPT_TRIGGER_BOTH);
watch_register_interrupt_callback(BTN_LIGHT, cb_light_btn_interrupt, INTERRUPT_TRIGGER_BOTH);
watch_register_interrupt_callback(BTN_ALARM, cb_alarm_btn_interrupt, INTERRUPT_TRIGGER_BOTH);
watch_enable_buzzer();
watch_enable_leds();
watch_enable_display();
movement_request_tick_frequency(1);
for(uint8_t i = 0; i < MOVEMENT_NUM_FACES; i++) {
watch_faces[i].setup(&movement_state.settings, i, &watch_face_contexts[i]);
}
watch_faces[movement_state.current_watch_face].activate(&movement_state.settings, watch_face_contexts[movement_state.current_watch_face]);
event.subsecond = 0;
event.event_type = EVENT_ACTIVATE;
}
}
void app_prepare_for_standby(void) {
}
void app_wake_from_standby(void) {
}
bool app_loop(void) {
if (movement_state.watch_face_changed) {
if (movement_state.settings.bit.button_should_sound) {
// low note for nonzero case, high note for return to watch_face 0
watch_buzzer_play_note(movement_state.next_watch_face ? BUZZER_NOTE_C7 : BUZZER_NOTE_C8, 50);
}
watch_faces[movement_state.current_watch_face].resign(&movement_state.settings, watch_face_contexts[movement_state.current_watch_face]);
movement_state.current_watch_face = movement_state.next_watch_face;
watch_clear_display();
movement_request_tick_frequency(1);
watch_faces[movement_state.current_watch_face].activate(&movement_state.settings, watch_face_contexts[movement_state.current_watch_face]);
event.subsecond = 0;
event.event_type = EVENT_ACTIVATE;
movement_state.watch_face_changed = false;
}
// if the LED should be off, turn it off
if (movement_state.light_ticks == 0) {
// unless the user is holding down the LIGHT button, in which case, give them more time.
if (watch_get_pin_level(BTN_LIGHT)) {
movement_state.light_ticks = 1;
} else {
watch_set_led_off();
movement_state.light_ticks = -1;
_movement_disable_fast_tick_if_possible();
}
}
// handle background tasks, if the alarm handler told us we need to
if (movement_state.needs_background_tasks_handled) _movement_handle_background_tasks();
// if we have a scheduled background task, handle that here:
if (event.event_type == EVENT_TICK && movement_state.has_scheduled_background_task) _movement_handle_scheduled_tasks();
// if we have timed out of our low energy mode countdown, enter low energy mode.
if (movement_state.le_mode_ticks == 0) {
movement_state.le_mode_ticks = -1;
watch_register_extwake_callback(BTN_ALARM, cb_alarm_btn_extwake, true);
event.event_type = EVENT_NONE;
event.subsecond = 0;
// this is a little mini-runloop.
// as long as le_mode_ticks is -1 (i.e. we are in low energy mode), we wake up here, update the screen, and go right back to sleep.
while (movement_state.le_mode_ticks == -1) {
// we also have to handle background tasks here in the mini-runloop
if (movement_state.needs_background_tasks_handled) _movement_handle_background_tasks();
event.event_type = EVENT_LOW_ENERGY_UPDATE;
watch_faces[movement_state.current_watch_face].loop(event, &movement_state.settings, watch_face_contexts[movement_state.current_watch_face]);
watch_enter_sleep_mode();
}
// as soon as le_mode_ticks is reset by the extwake handler, we bail out of the loop and reactivate ourselves.
event.event_type = EVENT_ACTIVATE;
// this is a hack tho: waking from sleep mode, app_setup does get called, but it happens before we have reset our ticks.
// need to figure out if there's a better heuristic for determining how we woke up.
app_setup();
}
static bool can_sleep = true;
if (event.event_type) {
event.subsecond = movement_state.subsecond;
can_sleep = watch_faces[movement_state.current_watch_face].loop(event, &movement_state.settings, watch_face_contexts[movement_state.current_watch_face]);
// escape hatch: a watch face may not resign on EVENT_MODE_BUTTON_DOWN. In that case, a long press of MODE should let them out.
if (event.event_type == EVENT_MODE_LONG_PRESS) {
movement_move_to_next_face();
can_sleep = false;
}
event.event_type = EVENT_NONE;
}
// if we have timed out of our timeout countdown, give the app a hint that they can resign.
if (movement_state.timeout_ticks == 0) {
movement_state.timeout_ticks = -1;
if (movement_state.settings.bit.to_always == false) {
// if "timeout always" is false, give the current watch face a chance to exit gracefully...
event.event_type = EVENT_TIMEOUT;
}
event.subsecond = movement_state.subsecond;
watch_faces[movement_state.current_watch_face].loop(event, &movement_state.settings, watch_face_contexts[movement_state.current_watch_face]);
event.event_type = EVENT_NONE;
if (movement_state.settings.bit.to_always && movement_state.current_watch_face != 0) {
// ...but if the user has "timeout always" set, give it the boot.
movement_move_to_face(0);
}
}
// Now that we've handled all display update tasks, handle the alarm.
if (movement_state.alarm_ticks >= 0) {
uint8_t buzzer_phase = (movement_state.alarm_ticks + 80) % 128;
if(buzzer_phase == 127) {
for(uint8_t i = 0; i < 4; i++) {
// TODO: This method of playing the buzzer blocks the UI while it's beeping.
// It might be better to time it with the fast tick.
watch_buzzer_play_note(BUZZER_NOTE_C8, (i != 3) ? 50 : 75);
if (i != 3) watch_buzzer_play_note(BUZZER_NOTE_REST, 50);
}
}
if (movement_state.alarm_ticks == 0) {
movement_state.alarm_ticks = -1;
_movement_disable_fast_tick_if_possible();
}
}
event.subsecond = 0;
return can_sleep && (movement_state.light_ticks == -1) && !movement_state.is_buzzing;
}
static movement_event_type_t _figure_out_button_event(bool pin_level, movement_event_type_t button_down_event_type, uint8_t *down_timestamp) {
// force alarm off if the user pressed a button.
if (movement_state.alarm_ticks) movement_state.alarm_ticks = 0;
if (pin_level) {
// handle rising edge
_movement_enable_fast_tick_if_needed();
*down_timestamp = movement_state.fast_ticks + 1;
return button_down_event_type;
} else {
// this line is hack but it handles the situation where the light button was held for more than 10 seconds.
// fast tick is disabled by then, and the LED would get stuck on since there's no one left decrementing light_ticks.
if (movement_state.light_ticks == 1) movement_state.light_ticks = 0;
// now that that's out of the way, handle falling edge
uint16_t diff = movement_state.fast_ticks - *down_timestamp;
*down_timestamp = 0;
_movement_disable_fast_tick_if_possible();
// any press over a half second is considered a long press.
if (diff > 64) return button_down_event_type + 2;
else return button_down_event_type + 1;
}
}
void cb_light_btn_interrupt(void) {
bool pin_level = watch_get_pin_level(BTN_LIGHT);
_movement_reset_inactivity_countdown();
event.event_type = _figure_out_button_event(pin_level, EVENT_LIGHT_BUTTON_DOWN, &movement_state.light_down_timestamp);
}
void cb_mode_btn_interrupt(void) {
bool pin_level = watch_get_pin_level(BTN_MODE);
_movement_reset_inactivity_countdown();
event.event_type = _figure_out_button_event(pin_level, EVENT_MODE_BUTTON_DOWN, &movement_state.mode_down_timestamp);
}
void cb_alarm_btn_interrupt(void) {
bool pin_level = watch_get_pin_level(BTN_ALARM);
_movement_reset_inactivity_countdown();
event.event_type = _figure_out_button_event(pin_level, EVENT_ALARM_BUTTON_DOWN, &movement_state.alarm_down_timestamp);
}
void cb_alarm_btn_extwake(void) {
// wake up!
_movement_reset_inactivity_countdown();
}
void cb_alarm_fired(void) {
movement_state.needs_background_tasks_handled = true;
}
void cb_fast_tick(void) {
movement_state.fast_ticks++;
if (movement_state.light_ticks > 0) movement_state.light_ticks--;
if (movement_state.alarm_ticks > 0) movement_state.alarm_ticks--;
// this is just a fail-safe; fast tick should be disabled as soon as the button is up, the LED times out, and/or the alarm finishes.
// but if for whatever reason it isn't, this forces the fast tick off after 10 seconds.
if (movement_state.fast_ticks >= 1280) watch_rtc_disable_periodic_callback(128);
}
void cb_tick(void) {
event.event_type = EVENT_TICK;
watch_date_time date_time = watch_rtc_get_date_time();
if (date_time.unit.second != movement_state.last_second) {
// TODO: can we consolidate these two ticks?
if (movement_state.settings.bit.le_interval && movement_state.le_mode_ticks > 0) movement_state.le_mode_ticks--;
if (movement_state.timeout_ticks > 0) movement_state.timeout_ticks--;
movement_state.last_second = date_time.unit.second;
movement_state.subsecond = 0;
} else {
movement_state.subsecond++;
}
}
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