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accelrometer: add tap event, test by adding tap to set countdown

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This commit is contained in:
Joey Castillo
2024-11-27 18:04:17 -05:00
parent c2b800bb69
commit 4b5e15cc1d
6 changed files with 130 additions and 8 deletions
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56
movement.c
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@@ -519,6 +519,47 @@ void movement_set_alarm_enabled(bool value) {
movement_state.settings.bit.alarm_enabled = value;
}
void movement_enable_tap_detection_if_available(void) {
#ifdef HAS_ACCELEROMETER
// disable event on INT1/A3 (normally tracks orientation changes)
eic_disable_event(HAL_GPIO_A3_pin());
// configure tap duration threshold and enable Z axis
lis2dw_configure_tap_threshold(0, 0, 12, LIS2DW_REG_TAP_THS_Z_Z_AXIS_ENABLE);
lis2dw_configure_tap_duration(10, 2, 2);
// ramp data rate up to 400 Hz and high performance mode
lis2dw_set_low_noise_mode(true);
lis2dw_set_data_rate(LIS2DW_DATA_RATE_HP_400_HZ);
lis2dw_set_mode(LIS2DW_MODE_HIGH_PERFORMANCE);
// Settling time (1 sample duration, i.e. 1/400Hz)
delay_ms(3);
// enable tap detection on INT1/A3.
lis2dw_configure_int1(LIS2DW_CTRL4_INT1_SINGLE_TAP | LIS2DW_CTRL4_INT1_6D);
// and enable the cb_accelerometer_event interrupt callback, so we can catch tap events.
watch_register_interrupt_callback(HAL_GPIO_A3_pin(), cb_accelerometer_event, INTERRUPT_TRIGGER_RISING);
#endif
}
void movement_disable_tap_detection_if_available(void) {
#ifdef HAS_ACCELEROMETER
// Ramp data rate back down to the usual lowest rate to save power.
lis2dw_set_low_noise_mode(false);
lis2dw_set_data_rate(LIS2DW_DATA_RATE_LOWEST);
lis2dw_set_mode(LIS2DW_MODE_LOW_POWER);
// disable the interrupt on INT1/A3...
eic_disable_interrupt(HAL_GPIO_A3_pin());
// ...disable Z axis (not sure if this is needed, does this save power?)...
lis2dw_configure_tap_threshold(0, 0, 0, 0);
// ...re-enable tracking of orientation changes...
lis2dw_configure_int1(LIS2DW_CTRL4_INT1_6D);
// ...and re-enable the event.
eic_enable_event(HAL_GPIO_A3_pin());
#endif
}
void app_init(void) {
_watch_init();
@@ -958,18 +999,19 @@ void cb_tick(void) {
#ifdef HAS_ACCELEROMETER
void cb_accelerometer_event(void) {
// This callback is not currently in use! Tap tracking will require using an interrupt on A3 instead of an event.
// I imagine watch faces will request tap tracking in a specific context, and we'll expose a Movement function
// that swaps out the mode for as long as the watch face needs taps. (the sampling rate required for tap tracking
// will to consume a lot more power, so we can't leave it on all the time.)
uint8_t int_src = lis2dw_get_interrupt_source();
if (int_src & LIS2DW_REG_ALL_INT_SRC_DOUBLE_TAP) event.event_type = EVENT_DOUBLE_TAP;
if (int_src & LIS2DW_REG_ALL_INT_SRC_SINGLE_TAP) event.event_type = EVENT_SINGLE_TAP;
if (int_src & LIS2DW_REG_ALL_INT_SRC_DOUBLE_TAP) {
event.event_type = EVENT_DOUBLE_TAP;
printf("Double tap!\n");
}
if (int_src & LIS2DW_REG_ALL_INT_SRC_SINGLE_TAP) {
event.event_type = EVENT_SINGLE_TAP;
printf("Single tap!\n");
}
}
void cb_accelerometer_wake(void) {
printf("Woke up from accelerometer!\n");
event.event_type = EVENT_ACCELEROMETER_WAKE;
// reset the stationary minutes counter; we're counting consecutive stationary minutes.
stationary_minutes = 0;