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accelerometer test: stream data to UART

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This commit is contained in:
Joey Castillo 2022-01-09 15:26:45 -05:00
parent 68e792f9b7
commit 669673fd4b
1 changed files with 14 additions and 5 deletions
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19
apps/accelerometer-test/app.c
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@ -20,17 +20,23 @@ uint8_t ticks = 0;
char buf[13] = {0}; char buf[13] = {0};
static void cb_tick(void) { static void cb_tick(void) {
watch_clear_indicator(WATCH_INDICATOR_SIGNAL);
if (!lis2dw_have_new_data()) return; if (!lis2dw_have_new_data()) return;
watch_set_indicator(WATCH_INDICATOR_SIGNAL);
lis2dw_reading raw_reading; lis2dw_reading raw_reading;
lis2dw_acceleration_measurement measurement = lis2dw_get_acceleration_measurement(&raw_reading); lis2dw_acceleration_measurement measurement = lis2dw_get_acceleration_measurement(&raw_reading);
(void)measurement; printf("%f, %f, %f\n", measurement.x, measurement.y, measurement.z);
printf("%d, %d, %d\n", raw_reading.x, raw_reading.y, raw_reading.z); char buf[128];
sprintf(buf, "%f, %f, %f\n", measurement.x, measurement.y, measurement.z);
watch_debug_puts(buf);
} }
void app_init(void) { void app_init(void) {
watch_enable_debug_uart(9600);
watch_enable_display(); watch_enable_display();
watch_display_string("IN 0 0 0", 0); watch_display_string("AC Strean", 0);
watch_enable_external_interrupts(); watch_enable_external_interrupts();
watch_register_interrupt_callback(BTN_MODE, cb_mode_pressed, INTERRUPT_TRIGGER_RISING); watch_register_interrupt_callback(BTN_MODE, cb_mode_pressed, INTERRUPT_TRIGGER_RISING);
@ -39,8 +45,12 @@ void app_init(void) {
watch_enable_i2c(); watch_enable_i2c();
lis2dw_begin(); lis2dw_begin();
lis2dw_set_data_rate(LIS2DW_DATA_RATE_25_HZ); // is this enough for training?
lis2dw_set_low_noise_mode(true); // consumes a little more power
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_range(LIS2DW_CTRL6_VAL_RANGE_4G);
watch_rtc_register_periodic_callback(cb_tick, 16); watch_rtc_register_periodic_callback(cb_tick, 64);
} }
void app_wake_from_backup(void) { void app_wake_from_backup(void) {
@ -57,7 +67,6 @@ void app_wake_from_standby(void) {
bool app_loop(void) { bool app_loop(void) {
// TODO: interrupt configuration for LIS2DW // TODO: interrupt configuration for LIS2DW
sprintf(buf, "IN%2d%3d%3d", ticks, interrupts, last_interrupts);
watch_display_string(buf, 0); watch_display_string(buf, 0);
return true; return true;