1 /* 2 * SPDX-License-Identifier: Apache-2.0 3 * 4 * Copyright (c) 2023 Linumiz 5 */ 6 7 #ifndef ZEPHYR_DRIVERS_SENSOR_MC3419_H_ 8 #define ZEPHYR_DRIVERS_SENSOR_MC3419_H_ 9 10 #include <zephyr/drivers/gpio.h> 11 #include <zephyr/drivers/i2c.h> 12 #include <zephyr/drivers/sensor.h> 13 #include <zephyr/kernel.h> 14 #include <zephyr/sys/util.h> 15 16 /* Registers */ 17 #define MC3419_REG_INT_CTRL 0x06 18 #define MC3419_REG_OP_MODE 0x07 19 #define MC3419_REG_SAMPLE_RATE 0x08 20 #define MC3419_REG_MOTION_CTRL 0x09 21 #define MC3419_REG_XOUT_L 0x0D 22 #define MC3419_REG_YOUT_L 0x0F 23 #define MC3419_REG_ZOUT_L 0x11 24 #define MC3419_REG_STATUS 0x13 25 #define MC3419_REG_INT_STATUS 0x14 26 #define MC3419_REG_RANGE_SELECT_CTRL 0x20 27 #define MC3419_REG_SAMPLE_RATE_2 0x30 28 #define MC3419_REG_COMM_CTRL 0x31 29 #define MC3419_REG_ANY_MOTION_THRES 0x43 30 31 #define MC3419_RANGE_MASK GENMASK(6, 4) 32 #define MC3419_LPF_MASK GENMASK(3, 0) 33 #define MC3419_DATA_READY_MASK BIT(7) 34 #define MC3419_ANY_MOTION_MASK BIT(2) 35 #define MC3419_INT_CLEAR 0x00 36 #define MC3419_INT_ROUTE 0x10 37 38 #define MC3419_ANY_MOTION_THRESH_MAX 0x7FFF 39 #define MC3419_SAMPLE_SIZE 3 40 #define MC3419_SAMPLE_READ_SIZE (MC3419_SAMPLE_SIZE * (sizeof(int16_t))) 41 42 #define SENSOR_GRAIN_VALUE (61LL / 1000.0) 43 #define SENSOR_GRAVITY_DOUBLE (SENSOR_G / 1000000.0) 44 #define MC3419_BASE_ODR_VAL 0x10 45 46 #define MC3419_TRIG_DATA_READY 0 47 #define MC3419_TRIG_ANY_MOTION 1 48 #define MC3419_TRIG_SIZE 2 49 50 enum mc3419_op_mode { 51 MC3419_MODE_STANDBY = 0x00, 52 MC3419_MODE_WAKE = 0x01 53 }; 54 55 struct mc3419_odr_map { 56 int16_t freq; 57 int16_t mfreq; 58 }; 59 60 enum mc3419_accl_range { 61 MC3419_ACCl_RANGE_2G, 62 MC3419_ACCl_RANGE_4G, 63 MC3419_ACCl_RANGE_8G, 64 MC3419_ACCl_RANGE_16G, 65 MC3419_ACCl_RANGE_12G, 66 MC3419_ACCL_RANGE_END 67 }; 68 69 struct mc3419_config { 70 struct i2c_dt_spec i2c; 71 #if defined(CONFIG_MC3419_TRIGGER) 72 struct gpio_dt_spec int_gpio; 73 bool int_cfg; 74 #endif 75 uint8_t lpf_fc_sel; 76 uint8_t decimation_rate; 77 }; 78 79 struct mc3419_driver_data { 80 double sensitivity; 81 struct k_sem sem; 82 int16_t samples[MC3419_SAMPLE_SIZE]; 83 #if defined(CONFIG_MC3419_TRIGGER) 84 const struct device *gpio_dev; 85 struct gpio_callback gpio_cb; 86 sensor_trigger_handler_t handler[MC3419_TRIG_SIZE]; 87 const struct sensor_trigger *trigger[MC3419_TRIG_SIZE]; 88 #if defined(CONFIG_MC3419_TRIGGER_OWN_THREAD) 89 K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_MC3419_THREAD_STACK_SIZE); 90 struct k_thread thread; 91 struct k_sem trig_sem; 92 #else 93 struct k_work work; 94 #endif 95 #endif 96 }; 97 98 #if defined(CONFIG_MC3419_TRIGGER) 99 int mc3419_trigger_init(const struct device *dev); 100 int mc3419_configure_trigger(const struct device *dev, 101 const struct sensor_trigger *trig, 102 sensor_trigger_handler_t handler); 103 #endif 104 105 #endif 106
