1 /* ST Microelectronics LIS2DS12 3-axis accelerometer driver 2 * 3 * Copyright (c) 2019 STMicroelectronics 4 * 5 * SPDX-License-Identifier: Apache-2.0 6 * 7 * Datasheet: 8 * https://www.st.com/resource/en/datasheet/lis2ds12.pdf 9 */ 10 11 #ifndef ZEPHYR_DRIVERS_SENSOR_LIS2DS12_LIS2DS12_H_ 12 #define ZEPHYR_DRIVERS_SENSOR_LIS2DS12_LIS2DS12_H_ 13 14 #include <zephyr/types.h> 15 #include <zephyr/drivers/sensor.h> 16 #include <zephyr/drivers/gpio.h> 17 #include <stmemsc.h> 18 #include "lis2ds12_reg.h" 19 20 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) 21 #include <zephyr/drivers/spi.h> 22 #endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */ 23 24 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) 25 #include <zephyr/drivers/i2c.h> 26 #endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */ 27 28 /* Return ODR reg value based on data rate set */ 29 #define LIS2DS12_ODR_TO_REG(_odr) \ 30 ((_odr <= 1) ? 1 : \ 31 ((31 - __builtin_clz(_odr / 25))) + 3) 32 33 struct lis2ds12_config { 34 stmdev_ctx_t ctx; 35 union { 36 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) 37 const struct i2c_dt_spec i2c; 38 #endif 39 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) 40 const struct spi_dt_spec spi; 41 #endif 42 } stmemsc_cfg; 43 uint8_t range; 44 uint8_t pm; 45 uint8_t odr; 46 #ifdef CONFIG_LIS2DS12_TRIGGER 47 struct gpio_dt_spec gpio_int; 48 #endif 49 }; 50 51 struct lis2ds12_data { 52 int sample_x; 53 int sample_y; 54 int sample_z; 55 float gain; 56 57 #ifdef CONFIG_LIS2DS12_TRIGGER 58 struct gpio_callback gpio_cb; 59 60 const struct sensor_trigger *data_ready_trigger; 61 sensor_trigger_handler_t data_ready_handler; 62 const struct device *dev; 63 64 #if defined(CONFIG_LIS2DS12_TRIGGER_OWN_THREAD) 65 K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_LIS2DS12_THREAD_STACK_SIZE); 66 struct k_thread thread; 67 struct k_sem trig_sem; 68 #elif defined(CONFIG_LIS2DS12_TRIGGER_GLOBAL_THREAD) 69 struct k_work work; 70 #endif 71 72 #endif /* CONFIG_LIS2DS12_TRIGGER */ 73 }; 74 75 #ifdef CONFIG_LIS2DS12_TRIGGER 76 int lis2ds12_trigger_set(const struct device *dev, 77 const struct sensor_trigger *trig, 78 sensor_trigger_handler_t handler); 79 80 int lis2ds12_trigger_init(const struct device *dev); 81 #endif 82 83 #endif /* ZEPHYR_DRIVERS_SENSOR_LIS2DS12_LIS2DS12_H_ */ 84
