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more accelerometer experimentation

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This commit is contained in:
joeycastillo 2024-10-09 01:34:44 -04:00
parent eb9206c8a1
commit 9c0330f247
1 changed files with 12 additions and 7 deletions
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19
watch-faces/demo/accel_interrupt_count_face.c
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@ -68,13 +68,15 @@ void accel_interrupt_count_face_setup(uint8_t watch_face_index, void ** context_
ptr_to_count = &((accel_interrupt_count_state_t *)*context_ptr)->count; ptr_to_count = &((accel_interrupt_count_state_t *)*context_ptr)->count;
watch_enable_i2c(); watch_enable_i2c();
lis2dw_begin(); lis2dw_begin();
lis2dw_set_low_power_mode(LIS2DW_LP_MODE_2); // lowest power 14-bit mode, 25 Hz is 3.5 µA @ 1.8V w/ low noise, 3µA without lis2dw_set_mode(LIS2DW_MODE_LOW_POWER);
lis2dw_set_low_noise_mode(true); // consumes a little more power lis2dw_set_low_power_mode(LIS2DW_LP_MODE_1); // lowest power mode
lis2dw_set_range(LIS2DW_CTRL6_VAL_RANGE_4G); lis2dw_set_low_noise_mode(true); // only marginally raises power consumption
lis2dw_set_data_rate(LIS2DW_DATA_RATE_25_HZ); // is this enough? lis2dw_enable_sleep(); // sleep at 1.6Hz, wake to 12.5Hz?
lis2dw_set_range(LIS2DW_CTRL6_VAL_RANGE_2G); // data sheet recommends 2G range
lis2dw_set_data_rate(LIS2DW_DATA_RATE_LOWEST); // 1.6Hz in low power mode
// threshold is 1/64th of full scale, so for a FS of ±4G this is 1.25G // threshold is 1/64th of full scale, so for a FS of ±2G this is 1.5G
((accel_interrupt_count_state_t *)*context_ptr)->threshold = 10; ((accel_interrupt_count_state_t *)*context_ptr)->threshold = 24;
_accel_interrupt_count_face_configure_threshold(((accel_interrupt_count_state_t *)*context_ptr)->threshold); _accel_interrupt_count_face_configure_threshold(((accel_interrupt_count_state_t *)*context_ptr)->threshold);
} }
} }
@ -87,6 +89,9 @@ void accel_interrupt_count_face_activate(void *context) {
// force LE interval to never sleep // force LE interval to never sleep
movement_set_low_energy_timeout(0); movement_set_low_energy_timeout(0);
state->running = true;
watch_register_interrupt_callback(HAL_GPIO_A4_pin(), accel_interrupt_handler, INTERRUPT_TRIGGER_RISING);
} }
bool accel_interrupt_count_face_loop(movement_event_t event, void *context) { bool accel_interrupt_count_face_loop(movement_event_t event, void *context) {
@ -102,7 +107,7 @@ bool accel_interrupt_count_face_loop(movement_event_t event, void *context) {
char buf[11]; char buf[11];
watch_display_text(WATCH_POSITION_TOP_RIGHT, " "); watch_display_text(WATCH_POSITION_TOP_RIGHT, " ");
watch_display_text_with_fallback(WATCH_POSITION_TOP, "W_THS", "TH"); watch_display_text_with_fallback(WATCH_POSITION_TOP, "W_THS", "TH");
watch_display_float_with_best_effort(state->new_threshold * 0.125, " G"); watch_display_float_with_best_effort(state->new_threshold * 0.0625, " G");
printf("%s\n", buf); printf("%s\n", buf);
} }
break; break;