153 lines
4.6 KiB
C
153 lines
4.6 KiB
C
/* ST Microelectronics LIS2DW12 3-axis accelerometer driver
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*
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* Copyright (c) 2019 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Datasheet:
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* https://www.st.com/resource/en/datasheet/lis2dw12.pdf
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_LIS2DW12_LIS2DW12_H_
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#define ZEPHYR_DRIVERS_SENSOR_LIS2DW12_LIS2DW12_H_
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#include <drivers/spi.h>
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#include <drivers/gpio.h>
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#include <sys/util.h>
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#include <drivers/sensor.h>
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#include "lis2dw12_reg.h"
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union axis3bit16_t {
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int16_t i16bit[3];
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uint8_t u8bit[6];
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};
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#if defined(CONFIG_LIS2DW12_ODR_1_6)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_1Hz6_LP_ONLY
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#elif defined(CONFIG_LIS2DW12_ODR_12_5)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_12Hz5
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#elif defined(CONFIG_LIS2DW12_ODR_25)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_25Hz
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#elif defined(CONFIG_LIS2DW12_ODR_50)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_50Hz
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#elif defined(CONFIG_LIS2DW12_ODR_100) || \
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defined(CONFIG_LIS2DW12_ODR_RUNTIME)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_100Hz
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#elif defined(CONFIG_LIS2DW12_ODR_200)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_200Hz
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#elif defined(CONFIG_LIS2DW12_ODR_400)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_400Hz
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#elif defined(CONFIG_LIS2DW12_ODR_800)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_800Hz
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#elif defined(CONFIG_LIS2DW12_ODR_1600)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_XL_ODR_1k6Hz
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#endif
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/* Return ODR reg value based on data rate set */
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#define LIS2DW12_ODR_TO_REG(_odr) \
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((_odr <= 1) ? LIS2DW12_XL_ODR_1Hz6_LP_ONLY : \
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(_odr <= 12) ? LIS2DW12_XL_ODR_12Hz5 : \
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((31 - __builtin_clz(_odr / 25))) + 3)
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/* FS reg value from Full Scale */
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#define LIS2DW12_FS_TO_REG(_fs) (30 - __builtin_clz(_fs))
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#if defined(CONFIG_LIS2DW12_ACCEL_RANGE_RUNTIME) || \
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defined(CONFIG_LIS2DW12_ACCEL_RANGE_2G)
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#define LIS2DW12_ACC_FS LIS2DW12_2g
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#elif defined(CONFIG_LIS2DW12_ACCEL_RANGE_4G)
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#define LIS2DW12_ACC_FS LIS2DW12_4g
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#elif defined(CONFIG_LIS2DW12_ACCEL_RANGE_8G)
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#define LIS2DW12_ACC_FS LIS2DW12_8g
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#elif defined(CONFIG_LIS2DW12_ACCEL_RANGE_16G)
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#define LIS2DW12_ACC_FS LIS2DW12_16g
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#endif
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/* Acc Gain value in ug/LSB in High Perf mode */
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#define LIS2DW12_FS_2G_GAIN 244
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#define LIS2DW12_FS_4G_GAIN 488
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#define LIS2DW12_FS_8G_GAIN 976
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#define LIS2DW12_FS_16G_GAIN 1952
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#define LIS2DW12_SHFT_GAIN_NOLP1 2
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#define LIS2DW12_ACCEL_GAIN_DEFAULT_VAL LIS2DW12_FS_2G_GAIN
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#define LIS2DW12_FS_TO_GAIN(_fs, _lp1) \
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(LIS2DW12_FS_2G_GAIN << ((_fs) + (_lp1)))
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/* shift value for power mode */
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#define LIS2DW12_SHIFT_PM1 4
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#define LIS2DW12_SHIFT_PMOTHER 2
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/**
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* struct lis2dw12_device_config - lis2dw12 hw configuration
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* @bus_name: Pointer to bus master identifier.
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* @pm: Power mode (lis2dh_powermode).
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* @int_gpio_port: Pointer to GPIO PORT identifier.
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* @int_gpio_pin: GPIO pin number connecter to sensor int pin.
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* @int_pin: Sensor int pin (int1/int2).
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*/
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struct lis2dw12_device_config {
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const char *bus_name;
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lis2dw12_mode_t pm;
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#ifdef CONFIG_LIS2DW12_TRIGGER
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const char *int_gpio_port;
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uint8_t int_gpio_pin;
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uint8_t int_gpio_flags;
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uint8_t int_pin;
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#ifdef CONFIG_LIS2DW12_PULSE
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uint8_t pulse_trigger;
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uint8_t pulse_ths[3];
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uint8_t pulse_shock;
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uint8_t pulse_ltncy;
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uint8_t pulse_quiet;
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#endif /* CONFIG_LIS2DW12_PULSE */
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#endif /* CONFIG_LIS2DW12_TRIGGER */
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};
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/* sensor data forward declaration (member definition is below) */
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struct lis2dw12_data;
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/* sensor data */
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struct lis2dw12_data {
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const struct device *bus;
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int16_t acc[3];
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/* save sensitivity */
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uint16_t gain;
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stmdev_ctx_t *ctx;
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#ifdef CONFIG_LIS2DW12_TRIGGER
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const struct device *dev;
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const struct device *gpio;
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uint8_t gpio_pin;
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struct gpio_callback gpio_cb;
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sensor_trigger_handler_t drdy_handler;
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#ifdef CONFIG_LIS2DW12_PULSE
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sensor_trigger_handler_t tap_handler;
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sensor_trigger_handler_t double_tap_handler;
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#endif /* CONFIG_LIS2DW12_PULSE */
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#if defined(CONFIG_LIS2DW12_TRIGGER_OWN_THREAD)
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K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_LIS2DW12_THREAD_STACK_SIZE);
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struct k_thread thread;
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struct k_sem gpio_sem;
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#elif defined(CONFIG_LIS2DW12_TRIGGER_GLOBAL_THREAD)
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struct k_work work;
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#endif /* CONFIG_LIS2DW12_TRIGGER_GLOBAL_THREAD */
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#endif /* CONFIG_LIS2DW12_TRIGGER */
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#if DT_INST_SPI_DEV_HAS_CS_GPIOS(0)
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struct spi_cs_control cs_ctrl;
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#endif
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};
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int lis2dw12_i2c_init(const struct device *dev);
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int lis2dw12_spi_init(const struct device *dev);
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#ifdef CONFIG_LIS2DW12_TRIGGER
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int lis2dw12_init_interrupt(const struct device *dev);
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int lis2dw12_trigger_set(const struct device *dev,
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const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler);
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#endif /* CONFIG_LIS2DW12_TRIGGER */
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#endif /* ZEPHYR_DRIVERS_SENSOR_LIS2DW12_LIS2DW12_H_ */
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