84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/* ST Microelectronics LIS2DS12 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/lis2ds12.pdf
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_LIS2DS12_LIS2DS12_H_
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#define ZEPHYR_DRIVERS_SENSOR_LIS2DS12_LIS2DS12_H_
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#include <zephyr/types.h>
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#include <zephyr/drivers/sensor.h>
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#include <zephyr/drivers/gpio.h>
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#include <stmemsc.h>
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#include "lis2ds12_reg.h"
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
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#include <zephyr/drivers/spi.h>
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#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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#include <zephyr/drivers/i2c.h>
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#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */
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/* Return ODR reg value based on data rate set */
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#define LIS2DS12_ODR_TO_REG(_odr) \
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((_odr <= 1) ? 1 : \
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((31 - __builtin_clz(_odr / 25))) + 3)
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struct lis2ds12_config {
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stmdev_ctx_t ctx;
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union {
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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const struct i2c_dt_spec i2c;
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#endif
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
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const struct spi_dt_spec spi;
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#endif
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} stmemsc_cfg;
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uint8_t range;
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uint8_t pm;
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uint8_t odr;
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#ifdef CONFIG_LIS2DS12_TRIGGER
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struct gpio_dt_spec gpio_int;
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#endif
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};
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struct lis2ds12_data {
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int sample_x;
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int sample_y;
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int sample_z;
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float gain;
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#ifdef CONFIG_LIS2DS12_TRIGGER
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struct gpio_callback gpio_cb;
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struct sensor_trigger data_ready_trigger;
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sensor_trigger_handler_t data_ready_handler;
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const struct device *dev;
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#if defined(CONFIG_LIS2DS12_TRIGGER_OWN_THREAD)
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K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_LIS2DS12_THREAD_STACK_SIZE);
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struct k_thread thread;
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struct k_sem trig_sem;
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#elif defined(CONFIG_LIS2DS12_TRIGGER_GLOBAL_THREAD)
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struct k_work work;
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#endif
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#endif /* CONFIG_LIS2DS12_TRIGGER */
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};
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#ifdef CONFIG_LIS2DS12_TRIGGER
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int lis2ds12_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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int lis2ds12_trigger_init(const struct device *dev);
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#endif
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#endif /* ZEPHYR_DRIVERS_SENSOR_LIS2DS12_LIS2DS12_H_ */
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