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#include <stdio.h>
#include <string.h>
#include <limits.h>
#include "watch.h"
#include "launcher.h"
#include "launcher_config.h"
LauncherState launcher_state;
void * widget_contexts[LAUNCHER_NUM_WIDGETS];
const int32_t launcher_screensaver_deadlines[8] = {INT_MAX, 3600, 7200, 21600, 43200, 86400, 172800, 604800};
LauncherEvent event;
void cb_mode_btn_interrupt();
void cb_light_btn_interrupt();
void cb_alarm_btn_interrupt();
void cb_alarm_btn_extwake();
void cb_alarm_fired();
void cb_tick();
static inline void _launcher_reset_screensaver_countdown() {
// for testing, make the timeout happen 60x faster.
launcher_state.screensaver_ticks = launcher_screensaver_deadlines[launcher_state.launcher_settings.bit.screensaver_interval] / 60;
}
void launcher_request_tick_frequency(uint8_t freq) {
watch_rtc_disable_all_periodic_callbacks();
launcher_state.subsecond = 0;
launcher_state.tick_frequency = freq;
watch_rtc_register_periodic_callback(cb_tick, freq);
}
void launcher_illuminate_led() {
launcher_state.light_ticks = 3;
}
void launcher_move_to_widget(uint8_t widget_index) {
launcher_state.widget_changed = true;
launcher_state.next_widget = widget_index;
}
void launcher_move_to_next_widget() {
launcher_move_to_widget((launcher_state.current_widget + 1) % LAUNCHER_NUM_WIDGETS);
}
void app_init() {
memset(&launcher_state, 0, sizeof(launcher_state));
launcher_state.launcher_settings.bit.led_green_color = 0xF;
launcher_state.launcher_settings.bit.button_should_sound = true;
launcher_state.launcher_settings.bit.screensaver_interval = 1;
_launcher_reset_screensaver_countdown();
}
void app_wake_from_deep_sleep() {
// This app does not support deep sleep mode.
}
void app_setup() {
if (launcher_state.screensaver_ticks != -1) {
watch_disable_extwake_interrupt(BTN_ALARM);
watch_rtc_disable_alarm_callback();
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();
launcher_request_tick_frequency(1);
for(uint8_t i = 0; i < LAUNCHER_NUM_WIDGETS; i++) {
widgets[i].setup(&launcher_state.launcher_settings, &widget_contexts[i]);
}
widgets[0].activate(&launcher_state.launcher_settings, widget_contexts[launcher_state.current_widget]);
event.value = 0;
event.bit.event_type = EVENT_ACTIVATE;
}
}
void app_prepare_for_sleep() {
}
void app_wake_from_sleep() {
}
bool app_loop() {
if (launcher_state.widget_changed) {
if (launcher_state.launcher_settings.bit.button_should_sound) {
// low note for nonzero case, high note for return to widget 0
watch_buzzer_play_note(launcher_state.current_widget ? BUZZER_NOTE_C7 : BUZZER_NOTE_C8, 50);
}
widgets[launcher_state.current_widget].resign(&launcher_state.launcher_settings, widget_contexts[launcher_state.current_widget]);
launcher_state.current_widget = launcher_state.next_widget;
watch_clear_display();
widgets[launcher_state.current_widget].activate(&launcher_state.launcher_settings, widget_contexts[launcher_state.current_widget]);
event.value = 0;
event.bit.event_type = EVENT_ACTIVATE;
launcher_state.widget_changed = false;
}
// If the LED is off and should be on, turn it on
if (launcher_state.light_ticks > 0 && !launcher_state.led_on) {
watch_set_led_color(launcher_state.launcher_settings.bit.led_red_color ? (0xF | launcher_state.launcher_settings.bit.led_red_color << 4) : 0,
launcher_state.launcher_settings.bit.led_green_color ? (0xF | launcher_state.launcher_settings.bit.led_green_color << 4) : 0);
launcher_state.led_on = true;
}
// if the LED is on and should be off, turn it off
if (launcher_state.led_on && launcher_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)) {
launcher_state.light_ticks = 3;
} else {
watch_set_led_off();
launcher_state.led_on = false;
}
}
// if we have timed out of our screensaver countdown, enter screensaver mode.
if (launcher_state.screensaver_ticks == 0) {
launcher_state.screensaver_ticks = -1;
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);
watch_register_extwake_callback(BTN_ALARM, cb_alarm_btn_extwake, true);
event.value = 0;
// this is a little mini-runloop.
// as long as screensaver_ticks is -1 (i.e. screensaver is active), we wake up here, update the screen, and go right back to sleep.
while (launcher_state.screensaver_ticks == -1) {
event.bit.event_type = EVENT_SCREENSAVER;
widgets[launcher_state.current_widget].loop(event, &launcher_state.launcher_settings, widget_contexts[launcher_state.current_widget]);
watch_enter_shallow_sleep(true);
}
// as soon as screensaver_ticks is reset by the extwake handler, we bail out of the loop and reactivate ourselves.
event.bit.event_type = EVENT_ACTIVATE;
// this is a hack tho: waking from shallow sleep, 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();
}
bool can_sleep = true;
if (event.bit.event_type) {
event.bit.subsecond = launcher_state.subsecond;
can_sleep = widgets[launcher_state.current_widget].loop(event, &launcher_state.launcher_settings, widget_contexts[launcher_state.current_widget]);
event.value = 0;
}
return can_sleep && !launcher_state.led_on;
}
LauncherEventType _figure_out_button_event(LauncherEventType button_down_event, uint8_t *down_timestamp) {
watch_date_time date_time = watch_rtc_get_date_time();
if (*down_timestamp) {
uint8_t diff = ((61 + date_time.unit.second) - *down_timestamp) % 60;
*down_timestamp = 0;
if (diff > 1) return button_down_event + 2;
else return button_down_event + 1;
} else {
*down_timestamp = date_time.unit.second + 1;
return button_down_event;
}
}
void cb_light_btn_interrupt() {
_launcher_reset_screensaver_countdown();
event.bit.event_type = _figure_out_button_event(EVENT_LIGHT_BUTTON_DOWN, &launcher_state.light_down_timestamp);
}
void cb_mode_btn_interrupt() {
_launcher_reset_screensaver_countdown();
event.bit.event_type = _figure_out_button_event(EVENT_MODE_BUTTON_DOWN, &launcher_state.mode_down_timestamp);
}
void cb_alarm_btn_interrupt() {
_launcher_reset_screensaver_countdown();
event.bit.event_type = _figure_out_button_event(EVENT_ALARM_BUTTON_DOWN, &launcher_state.alarm_down_timestamp);
}
void cb_alarm_btn_extwake() {
// wake up!
_launcher_reset_screensaver_countdown();
}
void cb_alarm_fired() {
event.bit.event_type = EVENT_SCREENSAVER;
}
void cb_tick() {
event.bit.event_type = EVENT_TICK;
watch_date_time date_time = watch_rtc_get_date_time();
if (date_time.unit.second != launcher_state.last_second) {
if (launcher_state.light_ticks) launcher_state.light_ticks--;
if (launcher_state.launcher_settings.bit.screensaver_interval && launcher_state.screensaver_ticks > 0) launcher_state.screensaver_ticks--;
launcher_state.last_second = date_time.unit.second;
launcher_state.subsecond = 0;
} else {
launcher_state.subsecond++;
}
}
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