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Merge pull request #230 from rieck/feat_lis2dw_sleep

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feat: Expose the accelerometer's sleep and wake duration
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voloved
2026-08-07 06:38:48 -04:00
committed by GitHub
parent 7755c70c11 c766393285
commit 4a580eeb55
2 changed files with 65 additions and 0 deletions
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55
watch-library/shared/driver/lis2dw.c
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@ -166,6 +166,23 @@ lis2dw_mode_t lis2dw_get_mode(void) {
#endif #endif
} }
// returns the output data rate (ODR) in Hz
float lis2dw_get_data_rate_hz(void) {
switch (lis2dw_get_data_rate()) {
case LIS2DW_DATA_RATE_LOWEST:
return (lis2dw_get_mode() == LIS2DW_MODE_HIGH_PERFORMANCE) ? 12.5f : 1.6f;
case LIS2DW_DATA_RATE_12_5_HZ: return 12.5f;
case LIS2DW_DATA_RATE_25_HZ: return 25.0f;
case LIS2DW_DATA_RATE_50_HZ: return 50.0f;
case LIS2DW_DATA_RATE_100_HZ: return 100.0f;
case LIS2DW_DATA_RATE_200_HZ: return 200.0f;
case LIS2DW_DATA_RATE_HP_400_HZ: return 400.0f;
case LIS2DW_DATA_RATE_HP_800_HZ: return 800.0f;
case LIS2DW_DATA_RATE_HP_1600_HZ: return 1600.0f;
default: return 0.0f;
}
}
void lis2dw_set_low_power_mode(lis2dw_low_power_mode_t mode) { void lis2dw_set_low_power_mode(lis2dw_low_power_mode_t mode) {
#ifdef I2C_SERCOM #ifdef I2C_SERCOM
uint8_t val = watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL1) & ~(0b11); uint8_t val = watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL1) & ~(0b11);
@ -374,6 +391,26 @@ void lis2dw_configure_6d_threshold(uint8_t threshold) {
#endif #endif
} }
// duration is a 4-bit value (0-15)
void lis2dw_configure_sleep_duration(uint8_t duration) {
#ifdef I2C_SERCOM
uint8_t configuration = watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_WAKE_UP_DUR) & 0b11110000;
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_WAKE_UP_DUR, configuration | (duration & 0b00001111));
#else
(void)duration;
#endif
}
// duration is a 2-bit value (0-3)
void lis2dw_configure_wake_duration(uint8_t duration) {
#ifdef I2C_SERCOM
uint8_t configuration = watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_WAKE_UP_DUR) & 0b10011111;
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_WAKE_UP_DUR, configuration | ((duration & 0b11) << 5));
#else
(void)duration;
#endif
}
void lis2dw_configure_tap_threshold(uint8_t threshold_x, uint8_t threshold_y, uint8_t threshold_z, uint8_t axes_to_enable) { void lis2dw_configure_tap_threshold(uint8_t threshold_x, uint8_t threshold_y, uint8_t threshold_z, uint8_t axes_to_enable) {
#ifdef I2C_SERCOM #ifdef I2C_SERCOM
(void) threshold_x; (void) threshold_x;
@ -501,3 +538,21 @@ uint8_t lis2dw_get_wakeup_threshold(void) {
return 0; return 0;
#endif #endif
} }
// value is in units of 512 / ODR seconds (0 means 16 / ODR)
uint8_t lis2dw_get_sleep_duration(void) {
#ifdef I2C_SERCOM
return watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_WAKE_UP_DUR) & 0b00001111;
#else
return 0;
#endif
}
// value is in units of 1 / ODR seconds
uint8_t lis2dw_get_wake_duration(void) {
#ifdef I2C_SERCOM
return (watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_WAKE_UP_DUR) >> 5) & 0b11;
#else
return 0;
#endif
}

10
watch-library/shared/driver/lis2dw.h
View File

@ -317,6 +317,8 @@ void lis2dw_set_data_rate(lis2dw_data_rate_t dataRate);
lis2dw_data_rate_t lis2dw_get_data_rate(void); lis2dw_data_rate_t lis2dw_get_data_rate(void);
float lis2dw_get_data_rate_hz(void);
void lis2dw_set_mode(lis2dw_mode_t mode); void lis2dw_set_mode(lis2dw_mode_t mode);
lis2dw_mode_t lis2dw_get_mode(void); lis2dw_mode_t lis2dw_get_mode(void);
@ -369,6 +371,10 @@ void lis2dw_configure_wakeup_threshold(uint8_t threshold);
void lis2dw_configure_6d_threshold(uint8_t threshold); void lis2dw_configure_6d_threshold(uint8_t threshold);
void lis2dw_configure_sleep_duration(uint8_t duration);
void lis2dw_configure_wake_duration(uint8_t duration);
void lis2dw_configure_tap_threshold(uint8_t threshold_x, uint8_t threshold_y, uint8_t threshold_z, uint8_t axes_to_enable); void lis2dw_configure_tap_threshold(uint8_t threshold_x, uint8_t threshold_y, uint8_t threshold_z, uint8_t axes_to_enable);
void lis2dw_configure_tap_duration(uint8_t latency, uint8_t quiet, uint8_t shock); void lis2dw_configure_tap_duration(uint8_t latency, uint8_t quiet, uint8_t shock);
@ -395,4 +401,8 @@ lis2dw_wakeup_source_t lis2dw_get_wakeup_source(void);
uint8_t lis2dw_get_wakeup_threshold(void); uint8_t lis2dw_get_wakeup_threshold(void);
uint8_t lis2dw_get_sleep_duration(void);
uint8_t lis2dw_get_wake_duration(void);
#endif // LIS2DW_H #endif // LIS2DW_H