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movement: help beats face update the screen less often

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This commit is contained in:
Joey Castillo 2021-12-01 11:30:19 -05:00
parent 0f89c11eba
commit 2504a922a3
2 changed files with 22 additions and 2 deletions
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19
movement/watch_faces/complications/beats_face.c
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@ -8,17 +8,25 @@ const uint8_t BEAT_REFRESH_FREQUENCY = 8;
void beats_face_setup(movement_settings_t *settings, void ** context_ptr) {
(void) settings;
(void) context_ptr;
if (*context_ptr == NULL) {
*context_ptr = malloc(sizeof(beats_face_state_t));
}
}
void beats_face_activate(movement_settings_t *settings, void *context) {
(void) settings;
(void) context;
beats_face_state_t *state = (beats_face_state_t *)context;
state->next_subsecond_update = 0;
state->last_centibeat_displayed = 0;
movement_request_tick_frequency(BEAT_REFRESH_FREQUENCY);
}
bool beats_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
(void) settings;
(void) context;
beats_face_state_t *state = (beats_face_state_t *)context;
if (event.event_type == EVENT_TICK && event.subsecond != state->next_subsecond_update) {
return true; // math is hard, don't do it if we don't have to.
}
char buf[16];
uint32_t centibeats;
@ -29,6 +37,13 @@ bool beats_face_loop(movement_event_t event, movement_settings_t *settings, void
case EVENT_TICK:
date_time = watch_rtc_get_date_time();
centibeats = clock2beats(date_time.unit.hour, date_time.unit.minute, date_time.unit.second, event.subsecond, movement_timezone_offsets[settings->bit.time_zone]);
if (centibeats == state->last_centibeat_displayed) {
// we missed this update, try again next subsecond
state->next_subsecond_update = (event.subsecond + 1) % BEAT_REFRESH_FREQUENCY;
} else {
state->next_subsecond_update = (event.subsecond + 1 + (BEAT_REFRESH_FREQUENCY * 2 / 3)) % BEAT_REFRESH_FREQUENCY;
state->last_centibeat_displayed = centibeats;
}
sprintf(buf, "bt %6ld", centibeats);
watch_display_string(buf, 0);

5
movement/watch_faces/complications/beats_face.h
View file

@ -3,6 +3,11 @@
#include "movement.h"
typedef struct {
int8_t next_subsecond_update;
uint32_t last_centibeat_displayed;
} beats_face_state_t;
uint32_t clock2beats(uint32_t hours, uint32_t minutes, uint32_t seconds, uint32_t subseconds, int16_t utc_offset);
void beats_face_setup(movement_settings_t *settings, void ** context_ptr);
void beats_face_activate(movement_settings_t *settings, void *context);