1 /* ST Microelectronics LIS2DE12 3-axis accelerometer sensor driver 2 * 3 * Copyright (c) 2024 STMicroelectronics 4 * 5 * SPDX-License-Identifier: Apache-2.0 6 * 7 * Datasheet: 8 * https://www.st.com/resource/en/datasheet/lis2de12.pdf 9 */ 10 11 #ifndef ZEPHYR_DRIVERS_SENSOR_LIS2DE12_LIS2DE12_H_ 12 #define ZEPHYR_DRIVERS_SENSOR_LIS2DE12_LIS2DE12_H_ 13 14 #include <zephyr/drivers/sensor.h> 15 #include <zephyr/types.h> 16 #include <zephyr/drivers/gpio.h> 17 #include <zephyr/sys/util.h> 18 #include <stmemsc.h> 19 #include "lis2de12_reg.h" 20 21 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) 22 #include <zephyr/drivers/spi.h> 23 #endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */ 24 25 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) 26 #include <zephyr/drivers/i2c.h> 27 #endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */ 28 29 #define LIS2DE12_EN_BIT 0x01 30 #define LIS2DE12_DIS_BIT 0x00 31 32 #define SENSOR_G_DOUBLE (SENSOR_G / 1000000.0) 33 34 struct lis2de12_config { 35 stmdev_ctx_t ctx; 36 union { 37 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) 38 const struct i2c_dt_spec i2c; 39 #endif 40 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) 41 const struct spi_dt_spec spi; 42 #endif 43 } stmemsc_cfg; 44 uint8_t accel_pm; 45 uint8_t accel_odr; 46 uint8_t accel_range; 47 uint8_t drdy_pulsed; 48 #ifdef CONFIG_LIS2DE12_TRIGGER 49 const struct gpio_dt_spec int1_gpio; 50 const struct gpio_dt_spec int2_gpio; 51 bool trig_enabled; 52 #endif /* CONFIG_LIS2DE12_TRIGGER */ 53 }; 54 55 union samples { 56 uint8_t raw[6]; 57 struct { 58 int16_t axis[3]; 59 }; 60 } __aligned(2); 61 62 struct lis2de12_data { 63 const struct device *dev; 64 int16_t acc[3]; 65 int16_t temp_sample; 66 uint32_t acc_gain; 67 uint8_t accel_freq; 68 uint8_t accel_fs; 69 70 #ifdef CONFIG_LIS2DE12_TRIGGER 71 struct gpio_dt_spec *drdy_gpio; 72 73 struct gpio_callback gpio_cb; 74 sensor_trigger_handler_t handler_drdy_acc; 75 const struct sensor_trigger *trig_drdy_acc; 76 77 #if defined(CONFIG_LIS2DE12_TRIGGER_OWN_THREAD) 78 K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_LIS2DE12_THREAD_STACK_SIZE); 79 struct k_thread thread; 80 struct k_sem gpio_sem; 81 #elif defined(CONFIG_LIS2DE12_TRIGGER_GLOBAL_THREAD) 82 struct k_work work; 83 #endif 84 #endif /* CONFIG_LIS2DE12_TRIGGER */ 85 }; 86 87 #ifdef CONFIG_LIS2DE12_TRIGGER 88 int lis2de12_trigger_set(const struct device *dev, 89 const struct sensor_trigger *trig, 90 sensor_trigger_handler_t handler); 91 92 int lis2de12_init_interrupt(const struct device *dev); 93 #endif 94 95 #endif /* ZEPHYR_DRIVERS_SENSOR_LIS2DE12_LIS2DE12_H_ */ 96