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lis2dh driver: add basic interrupt functionality

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This commit is contained in:
Joey Castillo
2021-11-30 18:53:43 -05:00
parent 48ceef7af3
commit 4ae46f907b
3 changed files with 66 additions and 35 deletions
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11
watch-library/driver/lis2dh.c
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@@ -114,3 +114,14 @@ void lis2dh_set_data_rate(lis2dh_data_rate_t dataRate) {
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) {
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);
}
lis2dh_interrupt_state lis2dh_get_int1_state() {
return (lis2dh_interrupt_state) watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_INT1_SRC);
}

27
watch-library/driver/lis2dh.h
View File

@@ -61,6 +61,29 @@ typedef enum {
} lis2dh_data_rate_t;
typedef enum {
LIS2DH_INTERRUPT_CONFIGURATION_OR = 0b00000000,
LIS2DH_INTERRUPT_CONFIGURATION_AND = 0b10000000,
LIS2DH_INTERRUPT_CONFIGURATION_6D_MOVEMENT = 0b01000000,
LIS2DH_INTERRUPT_CONFIGURATION_6D_POSITION = 0b11000000, // in 6D mode, these have an alternate meaning:
LIS2DH_INTERRUPT_CONFIGURATION_Z_HIGH_ENABLE = 0b00100000, // Z up enable
LIS2DH_INTERRUPT_CONFIGURATION_Z_LOW_ENABLE = 0b00010000, // Z down enable
LIS2DH_INTERRUPT_CONFIGURATION_Y_HIGH_ENABLE = 0b00001000, // Y up enable
LIS2DH_INTERRUPT_CONFIGURATION_Y_LOW_ENABLE = 0b00000100, // Y down enable
LIS2DH_INTERRUPT_CONFIGURATION_X_HIGH_ENABLE = 0b00000010, // X up enable
LIS2DH_INTERRUPT_CONFIGURATION_X_LOW_ENABLE = 0b00000001, // X down enable
} lis2dh_interrupt_configuration;
typedef enum {
LIS2DH_INTERRUPT_STATE_ACTIVE = 0b01000000,
LIS2DH_INTERRUPT_STATE_Z_HIGH = 0b00100000, // Z up
LIS2DH_INTERRUPT_STATE_Z_LOW = 0b00010000, // Z down
LIS2DH_INTERRUPT_STATE_Y_HIGH = 0b00001000, // Y up
LIS2DH_INTERRUPT_STATE_Y_LOW = 0b00000100, // Y down
LIS2DH_INTERRUPT_STATE_X_HIGH = 0b00000010, // X up
LIS2DH_INTERRUPT_STATE_X_LOW = 0b00000001, // X down
} lis2dh_interrupt_state;
bool lis2dh_begin();
uint8_t lis2dh_get_device_id();
@@ -79,6 +102,10 @@ 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);
lis2dh_interrupt_state lis2dh_get_int1_state();
// Assumes SA0 is high; if low, its 0x18
#define LIS2DH_ADDRESS (0x19)