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remove orientation change counter

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This commit is contained in:
Joey Castillo
2025-05-13 18:21:58 -04:00
parent 27f0c629d8
commit 0739382fb8
4 changed files with 14 additions and 38 deletions
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37
movement.c
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@@ -521,9 +521,6 @@ void movement_set_alarm_enabled(bool 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);
@@ -553,10 +550,6 @@ void movement_disable_tap_detection_if_available(void) {
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
}
@@ -716,31 +709,11 @@ void app_setup(void) {
// set up interrupts:
// INT1 is wired to pin A3. We'll configure the accelerometer to output an interrupt on INT1 when it detects an orientation change.
lis2dw_configure_int1(LIS2DW_CTRL4_INT1_6D);
HAL_GPIO_A3_in();
HAL_GPIO_A3_pmuxen(HAL_GPIO_PMUX_EIC);
eic_configure_pin(HAL_GPIO_A3_pin(), INTERRUPT_TRIGGER_RISING, false);
// but rather than hooking it up to an interrupt callback, we'll have it trigger an event.
eic_enable_event(HAL_GPIO_A3_pin());
// that event will increment a counter on TC2. So let's set that up:
if (!tc_is_enabled(2)) {
// TC2 clocked from GCLK3, the 1024 Hz clock. No further division.
tc_init(2, GENERIC_CLOCK_3, TC_PRESCALER_DIV1);
}
// COUNT16 mode, count up to 65535 orientation changes (we will reset before it overflows)
tc_set_counter_mode(2, TC_COUNTER_MODE_16BIT);
// run in standby (we spend most of our time in standby)
tc_set_run_in_standby(2, true);
// finally set the event action to count up when an event is received.
tc_set_event_action(2, TC_EVENT_ACTION_COUNT);
// enable TC2!
tc_enable(2);
// now configure the event system:
// on channel 0, route the INT3 event generator to the TC2 event user. Run in standby, on the asynchronous path.
evsys_configure_channel(0, EVSYS_ID_GEN_EIC_EXTINT_3, EVSYS_ID_USER_TC2_EVU, true, true);
// this concludes the setup for orientation tracking.
/// TODO: We had routed this interrupt to TC2 to count orientation changes, but TC2 consumed too much power.
/// Orientation changes helped with sleep tracking; would love to bring this back if we can find a low power solution.
/// For now, commenting these lines out; check commit 27f0c629d865f4bc56bc6e678da1eb8f4b919093 for power-hungry but working code.
// lis2dw_configure_int1(LIS2DW_CTRL4_INT1_6D);
// HAL_GPIO_A3_in();
// next: INT2 is wired to pin A4. We'll configure the accelerometer to output the sleep state on INT2.
// a falling edge on INT2 indicates the accelerometer has woken up.