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launcher: first crack at low power 'screensaver' mode

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This commit is contained in:
Joey Castillo 2021-10-03 20:37:15 -04:00
parent 64485b4255
commit 4300dff616
6 changed files with 84 additions and 42 deletions
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2
apps/Sensor Watch Starter Project/app.c
View file

@ -157,7 +157,7 @@ bool app_loop() {
delay_ms(250);
// nap time :)
watch_enter_shallow_sleep(NULL);
watch_enter_shallow_sleep(false);
// we just woke up; wait a moment again for the user's finger to be off the button...
delay_ms(250);

85
launcher/launcher.c
View file

@ -1,19 +1,27 @@
#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};
void cb_mode_pressed();
void cb_light_pressed();
void cb_alarm_pressed();
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) {
// FIXME: there is an issue where after changing tick frequencies on a widget switch, something glitchy happens on the next one.
watch_rtc_disable_all_periodic_callbacks();
launcher_state.subsecond = 0;
launcher_state.tick_frequency = freq;
@ -39,10 +47,11 @@ void launcher_move_to_next_widget() {
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;
watch_date_time date_time = watch_rtc_get_date_time();
watch_rtc_set_date_time(date_time);
launcher_state.launcher_settings.bit.screensaver_interval = 1;
_launcher_reset_screensaver_countdown();
}
void app_wake_from_deep_sleep() {
@ -50,23 +59,27 @@ void app_wake_from_deep_sleep() {
}
void app_setup() {
watch_enable_external_interrupts();
watch_register_interrupt_callback(BTN_MODE, cb_mode_pressed, INTERRUPT_TRIGGER_BOTH);
watch_register_interrupt_callback(BTN_LIGHT, cb_light_pressed, INTERRUPT_TRIGGER_BOTH);
watch_register_interrupt_callback(BTN_ALARM, cb_alarm_pressed, INTERRUPT_TRIGGER_BOTH);
if (launcher_state.screensaver_ticks != -1) {
watch_disable_extwake_interrupt(BTN_ALARM);
watch_enable_buzzer();
watch_enable_leds();
watch_enable_display();
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);
launcher_request_tick_frequency(1);
watch_enable_buzzer();
watch_enable_leds();
watch_enable_display();
for(uint8_t i = 0; i < LAUNCHER_NUM_WIDGETS; i++) {
widgets[i].setup(&launcher_state.launcher_settings, &widget_contexts[i]);
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]);
widgets[0].loop(EVENT_ACTIVATE, &launcher_state.launcher_settings, 0, widget_contexts[launcher_state.current_widget]);
}
widgets[0].activate(&launcher_state.launcher_settings, widget_contexts[launcher_state.current_widget]);
widgets[0].loop(EVENT_ACTIVATE, &launcher_state.launcher_settings, 0, widget_contexts[launcher_state.current_widget]);
}
void app_prepare_for_sleep() {
@ -106,6 +119,19 @@ bool app_loop() {
}
}
// 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);
widgets[launcher_state.current_widget].loop(EVENT_SCREENSAVER, &launcher_state.launcher_settings, 0, widget_contexts[launcher_state.current_widget]);
event = EVENT_SCREENSAVER;
watch_enter_shallow_sleep(true);
}
if (event) {
widgets[launcher_state.current_widget].loop(event, &launcher_state.launcher_settings, launcher_state.subsecond, widget_contexts[launcher_state.current_widget]);
event = 0;
@ -130,23 +156,38 @@ LauncherEvent _figure_out_button_event(LauncherEvent button_down_event, uint8_t
}
}
void cb_light_pressed() {
void cb_light_btn_interrupt() {
_launcher_reset_screensaver_countdown();
event = _figure_out_button_event(EVENT_LIGHT_BUTTON_DOWN, &launcher_state.light_down_timestamp);
}
void cb_mode_pressed() {
void cb_mode_btn_interrupt() {
_launcher_reset_screensaver_countdown();
event = _figure_out_button_event(EVENT_MODE_BUTTON_DOWN, &launcher_state.mode_down_timestamp);
}
void cb_alarm_pressed() {
void cb_alarm_btn_interrupt() {
_launcher_reset_screensaver_countdown();
event = _figure_out_button_event(EVENT_ALARM_BUTTON_DOWN, &launcher_state.alarm_down_timestamp);
}
void cb_alarm_btn_extwake() {
_launcher_reset_screensaver_countdown();
// this is a hack: waking from shallow sleep, app_setup does get called, but it happens before we reset our ticks.
// need to figure out if there's a better heuristic for determining how we woke up.
app_setup();
}
void cb_alarm_fired() {
event = EVENT_SCREENSAVER;
}
void cb_tick() {
event = 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;

4
launcher/launcher.h
View file

@ -25,6 +25,7 @@ typedef enum LauncherEvent {
EVENT_NONE = 0, // There is no event to report.
EVENT_ACTIVATE, // Your widget is entering the foreground.
EVENT_TICK, // Most common event type. Your widget is being called from the tick callback.
EVENT_SCREENSAVER, // Your widget is being asked to display its output for screensaver mode.
EVENT_LIGHT_BUTTON_DOWN, // The light button has been pressed, but not yet released.
EVENT_LIGHT_BUTTON_UP, // The light button was pressed and released.
EVENT_LIGHT_LONG_PRESS, // The light button was held for >2 seconds, and released.
@ -65,6 +66,9 @@ typedef struct LauncherState {
uint8_t mode_down_timestamp;
uint8_t alarm_down_timestamp;
// screensaver countdown
int32_t screensaver_ticks;
// stuff for subsecond tracking
uint8_t tick_frequency;
uint8_t last_second;

13
launcher/widgets/clock/simple_clock_widget.c
View file

@ -27,17 +27,18 @@ void simple_clock_widget_loop(LauncherEvent event, LauncherSettings *settings, u
watch_date_time date_time;
uint32_t previous_date_time;
switch (event) {
case EVENT_TICK:
case EVENT_ACTIVATE:
case EVENT_TICK:
case EVENT_SCREENSAVER:
date_time = watch_rtc_get_date_time();
previous_date_time = *((uint32_t *)context);
*((uint32_t *)context) = date_time.reg;
if (date_time.reg >> 6 == previous_date_time >> 6) {
if (date_time.reg >> 6 == previous_date_time >> 6 && event != EVENT_SCREENSAVER) {
// everything before seconds is the same, don't waste cycles setting those segments.
pos = 8;
sprintf(buf, "%02d", date_time.unit.second);
} else if (date_time.reg >> 12 == previous_date_time >> 12) {
} else if (date_time.reg >> 12 == previous_date_time >> 12 && event != EVENT_SCREENSAVER) {
// everything before minutes is the same.
pos = 6;
sprintf(buf, "%02d%02d", date_time.unit.minute, date_time.unit.second);
@ -54,7 +55,11 @@ void simple_clock_widget_loop(LauncherEvent event, LauncherSettings *settings, u
if (date_time.unit.hour == 0) date_time.unit.hour = 12;
}
pos = 0;
sprintf(buf, "%s%2d%2d%02d%02d", weekdays[simple_clock_widget_get_weekday(date_time.unit.year, date_time.unit.month, date_time.unit.day)], date_time.unit.day, date_time.unit.hour, date_time.unit.minute, date_time.unit.second);
if (event == EVENT_SCREENSAVER) {
sprintf(buf, "%s%2d%2d%02d ", weekdays[simple_clock_widget_get_weekday(date_time.unit.year, date_time.unit.month, date_time.unit.day)], date_time.unit.day, date_time.unit.hour, date_time.unit.minute);
} else {
sprintf(buf, "%s%2d%2d%02d%02d", weekdays[simple_clock_widget_get_weekday(date_time.unit.year, date_time.unit.month, date_time.unit.day)], date_time.unit.day, date_time.unit.hour, date_time.unit.minute, date_time.unit.second);
}
}
watch_display_string(buf, pos);
break;

7
watch-library/watch/watch_deepsleep.c
View file

@ -151,11 +151,8 @@ void _watch_disable_all_peripherals_except_slcd() {
MCLK->APBCMASK.reg &= ~MCLK_APBCMASK_SERCOM3;
}
void watch_enter_shallow_sleep(char *message) {
if (message != NULL) {
watch_display_string(" ", 0);
watch_display_string(message, 0);
} else {
void watch_enter_shallow_sleep(bool display_on) {
if (!display_on) {
slcd_sync_deinit(&SEGMENT_LCD_0);
hri_mclk_clear_APBCMASK_SLCD_bit(SLCD);
}

15
watch-library/watch/watch_deepsleep.h
View file

@ -81,13 +81,8 @@ uint32_t watch_get_backup_data(uint8_t reg);
* the LCD. You can wake from this mode by pressing the ALARM button, if you have an registered an
* external wake callback on the ALARM button. When your app wakes from this shallow sleep mode, your
* app_setup method will be called, since this function will have disabled things you set up.
* @param message Either NULL, or a string representing a message to display while in shallow sleep mode. If
* this parameter is NULL, the screen will be blanked out, and this function will disable the
* SLCD peripheral for additional power savings. If the message is non-NULL, it will replace
* any text on the screen, and will be displayed at position 0 (so you should pad out the beginning
* of the string with spaces if you wish for the message to appear on line 2, i.e. " SLEEP").
* Also note that this function will NOT clear any indicator segments that you have set. This is
* by design, in case you wish to leave an indicator lit in sleep mode.
* @param display_on if true, leaves the LCD on to display whatever content was on-screen. If false, disables
* the segment LCD controller for additional power savings.
* @details This shallow sleep mode is not the lowest power mode available (see watch_enter_deep_sleep), but
* it has the benefit of retaining your application state and being able to wake from the ALARM button.
* It also provides an option for displaying a message to the user when asleep. Note that whether you
@ -96,10 +91,10 @@ uint32_t watch_get_backup_data(uint8_t reg);
*
* Power consumption in shallow sleep mode varies a bit with the battery voltage and the temperature,
* but at 3 V and 25~30° C you can roughly estimate:
* * < 12µA current draw with the LCD controller on (message != NULL)
* * < 6µA current draw with the LCD controller off (message == NULL)
* * < 12µA current draw with the LCD controller on
* * < 6µA current draw with the LCD controller off
*/
void watch_enter_shallow_sleep(char *message);
void watch_enter_shallow_sleep(bool display_on);
/** @brief Enters the SAM L22's lowest-power mode, BACKUP.
* @details This function does some housekeeping before entering BACKUP mode. It first disables all