diff options
| -rw-r--r-- | movement/watch_faces/clock/clock_face.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/movement/watch_faces/clock/clock_face.c b/movement/watch_faces/clock/clock_face.c index 8ed0e6a8..537104a4 100644 --- a/movement/watch_faces/clock/clock_face.c +++ b/movement/watch_faces/clock/clock_face.c @@ -28,6 +28,12 @@ #include "watch_utility.h" #include "watch_private_display.h" +// 2.2 volts will happen when the battery has maybe 5-10% remaining? +// we can refine this later. +#ifndef CLOCK_FACE_LOW_BATTERY_VOLTAGE_THRESHOLD +#define CLOCK_FACE_LOW_BATTERY_VOLTAGE_THRESHOLD 2200 +#endif + typedef struct { uint32_t previous_date_time; uint8_t last_battery_check; @@ -75,6 +81,19 @@ static watch_date_time clock_24h_to_12h(watch_date_time date_time) { return date_time; } +static void clock_check_battery_periodically(clock_state_t *clock, watch_date_time date_time) { + // check the battery voltage once a day + if (date_time.unit.day == clock->last_battery_check) { return; } + + clock->last_battery_check = date_time.unit.day; + + watch_enable_adc(); + uint16_t voltage = watch_get_vcc_voltage(); + watch_disable_adc(); + + clock->battery_low = voltage < CLOCK_FACE_LOW_BATTERY_VOLTAGE_THRESHOLD; +} + void clock_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) { (void) settings; (void) watch_face_index; @@ -117,18 +136,9 @@ bool clock_face_loop(movement_event_t event, movement_settings_t *settings, void previous_date_time = state->previous_date_time; state->previous_date_time = date_time.reg; - // check the battery voltage once a day... - if (date_time.unit.day != state->last_battery_check) { - state->last_battery_check = date_time.unit.day; - watch_enable_adc(); - uint16_t voltage = watch_get_vcc_voltage(); - watch_disable_adc(); - // 2.2 volts will happen when the battery has maybe 5-10% remaining? - // we can refine this later. - state->battery_low = (voltage < 2200); - } + clock_check_battery_periodically(state, date_time); - // ...and set the LAP indicator if low. + // Set the LAP indicator if battery power is low if (state->battery_low) watch_set_indicator(WATCH_INDICATOR_LAP); if ((date_time.reg >> 6) == (previous_date_time >> 6) && event.event_type != EVENT_LOW_ENERGY_UPDATE) { |