diff options
Diffstat (limited to 'watch-library')
-rw-r--r-- | watch-library/shared/driver/lis2dh.c | 143 | ||||
-rw-r--r-- | watch-library/shared/driver/lis2dh.h | 222 |
2 files changed, 0 insertions, 365 deletions
diff --git a/watch-library/shared/driver/lis2dh.c b/watch-library/shared/driver/lis2dh.c deleted file mode 100644 index 20702bf5..00000000 --- a/watch-library/shared/driver/lis2dh.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * MIT License - * - * Copyright (c) 2021 Joey Castillo - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include "lis2dh.h" -#include "watch.h" - -bool lis2dh_begin(void) { - if (lis2dh_get_device_id() != LIS2DH_WHO_AM_I_VAL) { - return false; - } - // Enable all axes, start at lowest possible data rate - watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL1, LIS2DH_CTRL1_VAL_XEN | - LIS2DH_CTRL1_VAL_YEN | - LIS2DH_CTRL1_VAL_ZEN | - LIS2DH_CTRL1_VAL_ODR_1HZ); - // Set range to ±2G and enable block data update (output registers not updated until MSB and LSB have been read) - watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL4, LIS2DH_CTRL4_VAL_BDU | LIS2DH_RANGE_2_G); - - return true; -} - -uint8_t lis2dh_get_device_id(void) { - return watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_WHO_AM_I); -} - -bool lis2dh_have_new_data(void) { - uint8_t retval = watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_STATUS); - return !!retval; // return true if any bit is set -} - -lis2dh_reading lis2dh_get_raw_reading(void) { - uint8_t buffer[6]; - uint8_t reg = LIS2DH_REG_OUT_X_L | 0x80; // set high bit for consecutive reads - lis2dh_reading retval; - - watch_i2c_send(LIS2DH_ADDRESS, ®, 1); - watch_i2c_receive(LIS2DH_ADDRESS, (uint8_t *)&buffer, 6); - - retval.x = buffer[0]; - retval.x |= ((uint16_t)buffer[1]) << 8; - retval.y = buffer[2]; - retval.y |= ((uint16_t)buffer[3]) << 8; - retval.z = buffer[4]; - retval.z |= ((uint16_t)buffer[5]) << 8; - - return retval; -} - - lis2dh_acceleration_measurement lis2dh_get_acceleration_measurement(lis2dh_reading *out_reading) { - lis2dh_reading reading = lis2dh_get_raw_reading(); - uint8_t range = lis2dh_get_range(); - if (out_reading != NULL) *out_reading = reading; - - // this bit is cribbed from Adafruit's LIS3DH driver; from their notes, the magic number below - // converts from 16-bit lsb to 10-bit and divides by 1k to convert from milli-gs. - // final value is raw_lsb => 10-bit lsb -> milli-gs -> gs - uint8_t lsb_value = 1; - if (range == LIS2DH_RANGE_2_G) lsb_value = 4; - if (range == LIS2DH_RANGE_4_G) lsb_value = 8; - if (range == LIS2DH_RANGE_8_G) lsb_value = 16; - if (range == LIS2DH_RANGE_16_G) lsb_value = 48; - - lis2dh_acceleration_measurement retval; - - retval.x = lsb_value * ((float)reading.x / 64000.0); - retval.y = lsb_value * ((float)reading.y / 64000.0); - retval.z = lsb_value * ((float)reading.z / 64000.0); - - return retval; -} - -void lis2dh_set_range(lis2dh_range_t range) { - uint8_t val = watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL4) & 0xCF; - uint8_t bits = range << 4; - - watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL4, val | bits); -} - -lis2dh_range_t lis2dh_get_range(void) { - uint8_t retval = watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL4) & 0x30; - retval >>= 4; - return (lis2dh_range_t)retval; -} - - -void lis2dh_set_data_rate(lis2dh_data_rate_t dataRate) { - uint8_t val = watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL1) & 0x0F; - uint8_t bits = dataRate << 4; - - watch_i2c_write8(LIS2DH_ADDRESS, LIS2DH_REG_CTRL1, val | bits); -} - -lis2dh_data_rate_t lis2dh_get_data_rate(void) { - 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, 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(void) { - 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, 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(void) { - return (lis2dh_interrupt_state) watch_i2c_read8(LIS2DH_ADDRESS, LIS2DH_REG_INT2_SRC); -} - diff --git a/watch-library/shared/driver/lis2dh.h b/watch-library/shared/driver/lis2dh.h deleted file mode 100644 index 68831519..00000000 --- a/watch-library/shared/driver/lis2dh.h +++ /dev/null @@ -1,222 +0,0 @@ -/* - * MIT License - * - * Copyright (c) 2021 Joey Castillo - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef LIS2DH_H -#define LIS2DH_H - -#include <stdbool.h> -#include <stdint.h> - -typedef struct { - int16_t x; - int16_t y; - int16_t z; -} lis2dh_reading; - -typedef struct { - float x; - float y; - float z; -} lis2dh_acceleration_measurement; - -typedef enum { - LIS2DH_RANGE_16_G = 0b11, // +/- 16g - LIS2DH_RANGE_8_G = 0b10, // +/- 8g - LIS2DH_RANGE_4_G = 0b01, // +/- 4g - LIS2DH_RANGE_2_G = 0b00 // +/- 2g (default value) -} lis2dh_range_t; - -typedef enum { - LIS2DH_DATA_RATE_POWERDOWN = 0, - LIS2DH_DATA_RATE_1_HZ = 0b0001, - LIS2DH_DATA_RATE_10_HZ = 0b0010, - LIS2DH_DATA_RATE_25_HZ = 0b0011, - LIS2DH_DATA_RATE_50_HZ = 0b0100, - LIS2DH_DATA_RATE_100_HZ = 0b0101, - LIS2DH_DATA_RATE_200_HZ = 0b0110, - LIS2DH_DATA_RATE_400_HZ = 0b0111, - LIS2DH_DATA_RATE_LP1620HZ = 0b1000, - LIS2DH_DATA_RATE_LP5376HZ = 0b1001, - -} 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(void); - -uint8_t lis2dh_get_device_id(void); - -bool lis2dh_have_new_data(void); - -lis2dh_reading lis2dh_get_raw_reading(void); - -lis2dh_acceleration_measurement lis2dh_get_acceleration_measurement(lis2dh_reading *out_reading); - -void lis2dh_set_range(lis2dh_range_t range); - -lis2dh_range_t lis2dh_get_range(void); - -void lis2dh_set_data_rate(lis2dh_data_rate_t dataRate); - -lis2dh_data_rate_t lis2dh_get_data_rate(void); - -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); - -void lis2dh_configure_aoi_int2(lis2dh_interrupt_configuration configuration, uint8_t threshold, uint8_t duration, bool latch); - -lis2dh_interrupt_state lis2dh_get_int2_state(void); - -// Assumes SA0 is high; if low, its 0x18 -#define LIS2DH_ADDRESS (0x19) - -#define LIS2DH_REG_STATUS_AUX 0x07 ///< Auxiliary status register -#define LIS2DH_REG_STATUS_AUX_TDA (1 << 2) ///< Temperature data available -#define LIS2DH_REG_STATUS_AUX_TOR (1 << 6) ///< Temperature data overrun - -#define LIS2DH_REG_OUT_TEMP_L 0x0C ///< Temperature data low bit -#define LIS2DH_REG_OUT_TEMP_H 0x0D ///< Temperature data high bit - -#define LIS2DH_REG_INT_COUNTER 0x0E - -#define LIS2DH_REG_WHO_AM_I 0x0F ///< Device identification, will read 0x33 -#define LIS2DH_WHO_AM_I_VAL 0x33 ///< Expected value of the WHO_AM_I register - -#define LIS2DH_REG_TEMP_CFG 0x1F ///< Temperature configuration; 0 to disable, 0xC0 to enable. -#define LIS2DH_TEMP_CFG_VAL_ENABLE 0xC0 ///< Value for LIS2DH_REG_TEMP_CFG that enables temperature sensing. -#define LIS2DH_TEMP_CFG_VAL_DISABLE 0x00 ///< Value for LIS2DH_REG_TEMP_CFG that disables temperature sensing. - -#define LIS2DH_REG_CTRL1 0x20 ///< CTRL_REG1 in the data sheet. -#define LIS2DH_CTRL1_VAL_XEN 0b00000001 ///< Enable X-axis -#define LIS2DH_CTRL1_VAL_YEN 0b00000010 ///< Enable Y-axis -#define LIS2DH_CTRL1_VAL_ZEN 0b00000100 ///< Enable Z-axis -#define LIS2DH_CTRL1_VAL_LPEN 0b00001000 ///< Enable low power mode -#define LIS2DH_CTRL1_VAL_ODR_POWERDOWN 0 ///< Power down -#define LIS2DH_CTRL1_VAL_ODR_1HZ (LIS2DH_DATA_RATE_1_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_10HZ (LIS2DH_DATA_RATE_10_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_25HZ (LIS2DH_DATA_RATE_25_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_50HZ (LIS2DH_DATA_RATE_50_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_100HZ (LIS2DH_DATA_RATE_100_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_200HZ (LIS2DH_DATA_RATE_200_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_400HZ (LIS2DH_DATA_RATE_400_HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_LP1620HZ (LIS2DH_DATA_RATE_LP1620HZ << 4) -#define LIS2DH_CTRL1_VAL_ODR_LP5376HZ (LIS2DH_DATA_RATE_LP5376HZ << 4) - -#define LIS2DH_REG_CTRL2 0x21 - -#define LIS2DH_REG_CTRL3 0x22 -#define LIS2DH_CTRL3_VAL_I1_CLICK 0b10000000 -#define LIS2DH_CTRL3_VAL_I1_AOI1 0b01000000 -#define LIS2DH_CTRL3_VAL_I1_AOI2 0b00100000 -#define LIS2DH_CTRL3_VAL_I1_DRDY1 0b00010000 -#define LIS2DH_CTRL3_VAL_I1_DRDY2 0b00001000 -#define LIS2DH_CTRL3_VAL_I1_WTM 0b00000100 -#define LIS2DH_CTRL3_VAL_I1_OVERRUN 0b00000010 - -#define LIS2DH_REG_CTRL4 0x23 -#define LIS2DH_CTRL4_VAL_BDU 0b10000000 -#define LIS2DH_CTRL4_VAL_BLE 0b01000000 -#define LIS2DH_CTRL4_VAL_RANGE_2G (LIS2DH_RANGE_2_G << 4) -#define LIS2DH_CTRL4_VAL_RANGE_4G (LIS2DH_RANGE_4_G << 4) -#define LIS2DH_CTRL4_VAL_RANGE_8G (LIS2DH_RANGE_8_G << 4) -#define LIS2DH_CTRL4_VAL_RANGE_16G (LIS2DH_RANGE_16_G << 4) -#define LIS2DH_CTRL4_VAL_HR 0b00001000 -#define LIS2DH_CTRL4_VAL_ST0 0b00000000 -#define LIS2DH_CTRL4_VAL_ST1 0b00000000 - -#define LIS2DH_REG_CTRL5 0x24 -#define LIS2DH_CTRL5_VAL_BOOT 0b10000000 -#define LIS2DH_CTRL5_VAL_FIFO_EN 0b01000000 -#define LIS2DH_CTRL5_VAL_LIR_INT1 0b00001000 -#define LIS2DH_CTRL5_VAL_D4D_INT1 0b00000100 -#define LIS2DH_CTRL5_VAL_LIR_INT2 0b00000010 -#define LIS2DH_CTRL5_VAL_D4D_INT2 0b00000001 - -#define LIS2DH_REG_CTRL6 0x25 -#define LIS2DH_CTRL6_VAL_I2_CLICK 0b10000000 -#define LIS2DH_CTRL6_VAL_I2_INT1 0b01000000 -#define LIS2DH_CTRL6_VAL_I2_INT2 0b00100000 -#define LIS2DH_CTRL6_VAL_BOOT_I2 0b00010000 -#define LIS2DH_CTRL6_VAL_P2_ACT 0b00001000 -#define LIS2DH_CTRL6_VAL_H_L_ACTIVE 0b00000000 - -#define LIS2DH_REG_REFERENCE 0x26 - -#define LIS2DH_REG_STATUS 0x27 -#define LIS2DH_STATUS_VAL_ZYXOR 0b10000000 -#define LIS2DH_STATUS_VAL_ZOR 0b01000000 -#define LIS2DH_STATUS_VAL_YOR 0b00100000 -#define LIS2DH_STATUS_VAL_XOR 0b00010000 -#define LIS2DH_STATUS_VAL_ZYXDA 0b00001000 -#define LIS2DH_STATUS_VAL_ZDA 0b00000100 -#define LIS2DH_STATUS_VAL_YDA 0b00000010 -#define LIS2DH_STATUS_VAL_XDA 0b00000001 - -#define LIS2DH_REG_OUT_X_L 0x28 -#define LIS2DH_REG_OUT_X_H 0x29 -#define LIS2DH_REG_OUT_Y_L 0x2A -#define LIS2DH_REG_OUT_Y_H 0x2B -#define LIS2DH_REG_OUT_Z_L 0x2C -#define LIS2DH_REG_OUT_Z_H 0x2D - -#define LIS2DH_REG_FIFO_CTRL 0x2E -#define LIS2DH_REG_FIFO_SRC 0x2F -#define LIS2DH_REG_INT1_CFG 0x30 -#define LIS2DH_REG_INT1_SRC 0x31 -#define LIS2DH_REG_INT1_THS 0x32 -#define LIS2DH_REG_INT1_DUR 0x33 -#define LIS2DH_REG_INT2_CFG 0x34 -#define LIS2DH_REG_INT2_SRC 0x35 -#define LIS2DH_REG_INT2_THS 0x36 -#define LIS2DH_REG_INT2_DUR 0x37 -#define LIS2DH_REG_CLICK_CFG 0x38 -#define LIS2DH_REG_CLICK_SRC 0x39 -#define LIS2DH_REG_CLICK_THS 0x3A -#define LIS2DH_REG_TIME_LIMIT 0x3B -#define LIS2DH_REG_TIME_LATENCY 0x3C -#define LIS2DH_REG_TIME_WINDOW 0x3D - -#endif // LIS2DH_H |