From 36be251e893a0f9c186e409952c06e93d1031f7d Mon Sep 17 00:00:00 2001 From: Joey Castillo Date: Wed, 1 Dec 2021 09:41:11 -0500 Subject: [PATCH] lis2dh: add support for interrupt latching (stays active until cleared) --- apps/Sensor Watch Accelerometer Test/app.c | 2 +- watch-library/driver/lis2dh.c | 8 ++++++-- watch-library/driver/lis2dh.h | 4 ++-- 3 files changed, 9 insertions(+), 5 deletions(-) diff --git a/apps/Sensor Watch Accelerometer Test/app.c b/apps/Sensor Watch Accelerometer Test/app.c index f9483eb..bea00f6 100644 --- a/apps/Sensor Watch Accelerometer Test/app.c +++ b/apps/Sensor Watch Accelerometer Test/app.c @@ -58,7 +58,7 @@ void app_init() { LIS2DH_INTERRUPT_CONFIGURATION_OR | LIS2DH_INTERRUPT_CONFIGURATION_X_HIGH_ENABLE | LIS2DH_INTERRUPT_CONFIGURATION_Y_HIGH_ENABLE | - LIS2DH_INTERRUPT_CONFIGURATION_Z_HIGH_ENABLE, 96, 0); + LIS2DH_INTERRUPT_CONFIGURATION_Z_HIGH_ENABLE, 96, 0, true); watch_register_interrupt_callback(A1, cb_interrupt_1, INTERRUPT_TRIGGER_RISING); watch_rtc_register_tick_callback(cb_tick); diff --git a/watch-library/driver/lis2dh.c b/watch-library/driver/lis2dh.c index 8266905..21087be 100644 --- a/watch-library/driver/lis2dh.c +++ b/watch-library/driver/lis2dh.c @@ -115,22 +115,26 @@ lis2dh_data_rate_t lis2dh_get_data_rate() { return watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL1) >> 4; } -void lis2dh_configure_aoi_int1(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration) { +void lis2dh_configure_aoi_int1(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration, bool latch) { watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL3, LIS2DH_CTRL3_VAL_I1_AOI1); watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_INT1_CFG, configuration); watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_INT1_THS, threshold); watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_INT1_DUR, duration); + uint8_t val = watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL5) & 0xF7; + watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL5, val | latch ? LIS2DH_CTRL5_VAL_LIR_INT1 : 0); } lis2dh_interrupt_state lis2dh_get_int1_state() { return (lis2dh_interrupt_state) watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_INT1_SRC); } -void lis2dh_configure_aoi_int2(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration) { +void lis2dh_configure_aoi_int2(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration, bool latch) { watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL6, LIS2DH_CTRL6_VAL_I2_INT2); watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_INT2_CFG, configuration); watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_INT2_THS, threshold); watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_INT2_DUR, duration); + uint8_t val = watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL5) & 0xFD; + watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL5, val | latch ? LIS2DH_CTRL5_VAL_LIR_INT2 : 0); } lis2dh_interrupt_state lis2dh_get_int2_state() { diff --git a/watch-library/driver/lis2dh.h b/watch-library/driver/lis2dh.h index f3e7ec8..ddd4212 100644 --- a/watch-library/driver/lis2dh.h +++ b/watch-library/driver/lis2dh.h @@ -102,11 +102,11 @@ void lis2dh_set_data_rate(lis2dh_data_rate_t dataRate); lis2dh_data_rate_t lis2dh_get_data_rate(); -void lis2dh_configure_aoi_int1(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration); +void lis2dh_configure_aoi_int1(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration, bool latch); lis2dh_interrupt_state lis2dh_get_int1_state(); -void lis2dh_configure_aoi_int2(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration); +void lis2dh_configure_aoi_int2(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration, bool latch); lis2dh_interrupt_state lis2dh_get_int2_state();