From 36be251e893a0f9c186e409952c06e93d1031f7d Mon Sep 17 00:00:00 2001 From: Joey Castillo Date: Wed, 1 Dec 2021 09:41:11 -0500 Subject: lis2dh: add support for interrupt latching (stays active until cleared) --- watch-library/driver/lis2dh.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'watch-library/driver/lis2dh.c') diff --git a/watch-library/driver/lis2dh.c b/watch-library/driver/lis2dh.c index 8266905f..21087bef 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() { -- cgit v1.2.3