120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/* ST Microelectronics IIS2DLPC 3-axis accelerometer driver
|
|
*
|
|
* Copyright (c) 2020 STMicroelectronics
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Datasheet:
|
|
* https://www.st.com/resource/en/datasheet/iis2dlpc.pdf
|
|
*/
|
|
|
|
#ifndef ZEPHYR_DRIVERS_SENSOR_IIS2DLPC_IIS2DLPC_H_
|
|
#define ZEPHYR_DRIVERS_SENSOR_IIS2DLPC_IIS2DLPC_H_
|
|
|
|
#include <zephyr/drivers/gpio.h>
|
|
#include <zephyr/sys/util.h>
|
|
#include <zephyr/drivers/sensor.h>
|
|
#include <stmemsc.h>
|
|
#include "iis2dlpc_reg.h"
|
|
|
|
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
|
|
#include <zephyr/drivers/spi.h>
|
|
#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */
|
|
|
|
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
|
|
#include <zephyr/drivers/i2c.h>
|
|
#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */
|
|
|
|
/* Return ODR reg value based on data rate set */
|
|
#define IIS2DLPC_ODR_TO_REG(_odr) \
|
|
((_odr <= 1) ? IIS2DLPC_XL_ODR_1Hz6_LP_ONLY : \
|
|
(_odr <= 12) ? IIS2DLPC_XL_ODR_12Hz5 : \
|
|
((31 - __builtin_clz(_odr / 25))) + 3)
|
|
|
|
/* FS reg value from Full Scale */
|
|
#define IIS2DLPC_FS_TO_REG(_fs) (30 - __builtin_clz(_fs))
|
|
|
|
/* Acc Gain value in ug/LSB in High Perf mode */
|
|
#define IIS2DLPC_FS_2G_GAIN 244
|
|
#define IIS2DLPC_FS_4G_GAIN 488
|
|
#define IIS2DLPC_FS_8G_GAIN 976
|
|
#define IIS2DLPC_FS_16G_GAIN 1952
|
|
|
|
#define IIS2DLPC_SHFT_GAIN_NOLP1 2
|
|
#define IIS2DLPC_ACCEL_GAIN_DEFAULT_VAL IIS2DLPC_FS_2G_GAIN
|
|
#define IIS2DLPC_FS_TO_GAIN(_fs, _lp1) \
|
|
(IIS2DLPC_FS_2G_GAIN << ((_fs) + (_lp1)))
|
|
|
|
/* shift value for power mode */
|
|
#define IIS2DLPC_SHIFT_PM1 4
|
|
#define IIS2DLPC_SHIFT_PMOTHER 2
|
|
|
|
/**
|
|
* struct iis2dlpc_dev_config - iis2dlpc hw configuration
|
|
* @bus_name: Pointer to bus master identifier.
|
|
* @pm: Power mode (lis2dh_powermode).
|
|
* @irq_dev_name: Pointer to GPIO PORT identifier.
|
|
* @irq_pin: GPIO pin number connected to sensor int pin.
|
|
* @drdy_int: Sensor drdy int (int1/int2).
|
|
*/
|
|
struct iis2dlpc_config {
|
|
stmdev_ctx_t ctx;
|
|
union {
|
|
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
|
|
const struct i2c_dt_spec i2c;
|
|
#endif
|
|
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
|
|
const struct spi_dt_spec spi;
|
|
#endif
|
|
} stmemsc_cfg;
|
|
iis2dlpc_mode_t pm;
|
|
uint8_t range;
|
|
#ifdef CONFIG_IIS2DLPC_TRIGGER
|
|
const struct gpio_dt_spec gpio_drdy;
|
|
uint8_t drdy_int;
|
|
#ifdef CONFIG_IIS2DLPC_TAP
|
|
uint8_t tap_mode;
|
|
uint8_t tap_threshold[3];
|
|
uint8_t tap_shock;
|
|
uint8_t tap_latency;
|
|
uint8_t tap_quiet;
|
|
#endif /* CONFIG_IIS2DLPC_TAP */
|
|
#endif /* CONFIG_IIS2DLPC_TRIGGER */
|
|
};
|
|
|
|
/* sensor data */
|
|
struct iis2dlpc_data {
|
|
const struct device *dev;
|
|
int16_t acc[3];
|
|
|
|
/* save sensitivity */
|
|
uint16_t gain;
|
|
|
|
#ifdef CONFIG_IIS2DLPC_TRIGGER
|
|
const struct device *gpio;
|
|
uint8_t gpio_pin;
|
|
struct gpio_callback gpio_cb;
|
|
sensor_trigger_handler_t drdy_handler;
|
|
#ifdef CONFIG_IIS2DLPC_TAP
|
|
sensor_trigger_handler_t tap_handler;
|
|
sensor_trigger_handler_t double_tap_handler;
|
|
#endif /* CONFIG_IIS2DLPC_TAP */
|
|
#if defined(CONFIG_IIS2DLPC_TRIGGER_OWN_THREAD)
|
|
K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_IIS2DLPC_THREAD_STACK_SIZE);
|
|
struct k_thread thread;
|
|
struct k_sem gpio_sem;
|
|
#elif defined(CONFIG_IIS2DLPC_TRIGGER_GLOBAL_THREAD)
|
|
struct k_work work;
|
|
#endif /* CONFIG_IIS2DLPC_TRIGGER_GLOBAL_THREAD */
|
|
#endif /* CONFIG_IIS2DLPC_TRIGGER */
|
|
};
|
|
|
|
#ifdef CONFIG_IIS2DLPC_TRIGGER
|
|
int iis2dlpc_init_interrupt(const struct device *dev);
|
|
int iis2dlpc_trigger_set(const struct device *dev,
|
|
const struct sensor_trigger *trig,
|
|
sensor_trigger_handler_t handler);
|
|
#endif /* CONFIG_IIS2DLPC_TRIGGER */
|
|
|
|
#endif /* ZEPHYR_DRIVERS_SENSOR_IIS2DLPC_IIS2DLPC_H_ */
|