2018-05-17 15:32:05 +02:00
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/* 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 <spi.h>
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#include <gpio.h>
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#include <misc/util.h>
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#include <sensor.h>
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/* COMMON DEFINE FOR ACCEL SENSOR */
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#define LIS2DW12_EN_BIT 0x01
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#define LIS2DW12_DIS_BIT 0x00
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#define LIS2DW12_OUT_LEN 6
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/* temperature sensor */
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#define LIS2DW12_OUT_TEMP_L_ADDR 0x0d
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/* Who Am I */
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#define LIS2DW12_WHO_AM_I_REG 0x0f
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#define LIS2DW12_WHO_AM_I 0x44
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#define LIS2DW12_CTRL1_ADDR 0x20
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#define LIS2DW12_LOW_POWER_MASK 0x03
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#define LIS2DW12_POWER_MODE_MASK 0x0c
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#define LIS2DW12_LOW_POWER_MODE 0x00
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#define LIS2DW12_HP_MODE 0x04
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#define LIS2DW12_ODR_MASK 0xf0
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enum lis2dh_powermode {
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LIS2DW12_LOW_POWER_M1,
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LIS2DW12_LOW_POWER_M2,
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LIS2DW12_LOW_POWER_M3,
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LIS2DW12_LOW_POWER_M4,
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LIS2DW12_HIGH_PERF
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};
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/* Acc data rate for Low Power mode */
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#define LIS2DW12_MAX_ODR 1600
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enum lis2dh_odr {
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LIS2DW12_ODR_POWER_OFF_VAL,
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LIS2DW12_ODR_1_6HZ_VAL,
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LIS2DW12_ODR_12_5HZ_VAL,
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LIS2DW12_ODR_25HZ_VAL,
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LIS2DW12_ODR_50HZ_VAL,
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LIS2DW12_ODR_100HZ_VAL,
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LIS2DW12_ODR_200HZ_VAL,
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LIS2DW12_ODR_400HZ_VAL,
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LIS2DW12_ODR_800HZ_VAL,
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LIS2DW12_ODR_1600HZ_VAL
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};
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#if defined(CONFIG_LIS2DW12_ODR_1_6)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_1_6HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_12_5)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_12_5HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_25)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_25HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_50)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_50HZ_VAL
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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_ODR_100HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_200)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_200HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_400)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_400HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_800)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_800HZ_VAL
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#elif defined(CONFIG_LIS2DW12_ODR_1600)
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#define LIS2DW12_DEFAULT_ODR LIS2DW12_ODR_1600HZ_VAL
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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_ODR_1_6HZ_VAL : \
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(_odr <= 12) ? LIS2DW12_ODR_12_5HZ_VAL : \
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((31 - __builtin_clz(_odr / 25))) + 3)
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#define LIS2DW12_CTRL2_ADDR 0x21
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#define LIS2DW12_BDU_MASK BIT(3)
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#define LIS2DW12_RESET_MASK BIT(6)
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#define LIS2DW12_BOOT_MASK BIT(7)
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#define LIS2DW12_CTRL3_ADDR 0x22
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#define LIS2DW12_LIR_MASK BIT(4)
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#define LIS2DW12_CTRL4_ADDR 0x23
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#define LIS2DW12_INT1_DRDY BIT(0)
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#define LIS2DW12_CTRL5_ADDR 0x24
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#define LIS2DW12_INT2_DRDY BIT(0)
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#define LIS2DW12_CTRL6_ADDR 0x25
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#define LIS2DW12_FS_MASK 0x30
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enum lis2dh_fs {
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LIS2DW12_FS_2G_VAL,
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LIS2DW12_FS_4G_VAL,
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LIS2DW12_FS_8G_VAL,
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LIS2DW12_FS_16G_VAL
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};
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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_FS_2G_VAL
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#elif defined(CONFIG_LIS2DW12_ACCEL_RANGE_4G)
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#define LIS2DW12_ACC_FS LIS2DW12_FS_4G_VAL
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#elif defined(CONFIG_LIS2DW12_ACCEL_RANGE_8G)
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#define LIS2DW12_ACC_FS LIS2DW12_FS_8G_VAL
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#elif defined(CONFIG_LIS2DW12_ACCEL_RANGE_16G)
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#define LIS2DW12_ACC_FS LIS2DW12_FS_16G_VAL
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#endif
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#define LIS2DW12_OUT_T_REG 0x26
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#define LIS2DW12_STATUS_REG 0x27
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#define LIS2DW12_STS_XLDA_UP 0x01
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#define LIS2DW12_OUT_X_L_ADDR 0x28
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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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enum lis2dh_powermode pm;
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#ifdef CONFIG_LIS2DW12_TRIGGER
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const char *int_gpio_port;
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u8_t int_gpio_pin;
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u8_t int_pin;
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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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/* transmission function interface */
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struct lis2dw12_tf {
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int (*read_data)(struct lis2dw12_data *data, u8_t reg_addr,
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u8_t *value, u8_t len);
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int (*write_data)(struct lis2dw12_data *data, u8_t reg_addr,
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u8_t *value, u8_t len);
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int (*read_reg)(struct lis2dw12_data *data, u8_t reg_addr,
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u8_t *value);
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int (*write_reg)(struct lis2dw12_data *data, u8_t reg_addr,
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u8_t value);
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int (*update_reg)(struct lis2dw12_data *data, u8_t reg_addr,
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u8_t mask, u8_t value);
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};
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/* sensor data */
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struct lis2dw12_data {
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struct device *bus;
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s16_t acc[3];
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/* save sensitivity */
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u16_t gain;
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const struct lis2dw12_tf *hw_tf;
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#ifdef CONFIG_LIS2DW12_TRIGGER
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struct device *gpio;
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struct gpio_callback gpio_cb;
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sensor_trigger_handler_t handler_drdy;
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#if defined(CONFIG_LIS2DW12_TRIGGER_OWN_THREAD)
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K_THREAD_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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struct device *dev;
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#endif /* CONFIG_LIS2DW12_TRIGGER_GLOBAL_THREAD */
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#endif /* CONFIG_LIS2DW12_TRIGGER */
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2019-06-11 14:20:32 -05:00
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#if defined(DT_INST_0_ST_LIS2DW12_CS_GPIO_CONTROLLER)
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2018-05-17 15:32:05 +02:00
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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(struct device *dev);
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int lis2dw12_spi_init(struct device *dev);
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#ifdef CONFIG_LIS2DW12_TRIGGER
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int lis2dw12_init_interrupt(struct device *dev);
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int lis2dw12_trigger_set(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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