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+/*
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+ * Copyright (c) 2006-2021, RT-Thread Development Team
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+ *
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+ * SPDX-License-Identifier: Apache-2.0
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2019-01-31 flybreak first version
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+ */
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+
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+#ifndef __SENSOR_H__
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+#define __SENSOR_H__
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+
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+#include <rtthread.h>
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+#include <rtdevice.h>
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+#ifdef RT_USING_RTC
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+#define rt_sensor_get_ts() time(RT_NULL) /* API for the sensor to get the timestamp */
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+#else
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+#define rt_sensor_get_ts() rt_tick_get() /* API for the sensor to get the timestamp */
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+#endif
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+
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+#define RT_PIN_NONE 0xFFFF /* RT PIN NONE */
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+#define RT_DEVICE_FLAG_FIFO_RX 0x200 /* Flag to use when the sensor is open by fifo mode */
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+
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+#define RT_SENSOR_MODULE_MAX (3) /* The maximum number of members of a sensor module */
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+
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+/* Sensor types */
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+
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+#define RT_SENSOR_CLASS_NONE (0)
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+#define RT_SENSOR_CLASS_ACCE (1) /* Accelerometer */
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+#define RT_SENSOR_CLASS_GYRO (2) /* Gyroscope */
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+#define RT_SENSOR_CLASS_MAG (3) /* Magnetometer */
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+#define RT_SENSOR_CLASS_TEMP (4) /* Temperature */
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+#define RT_SENSOR_CLASS_HUMI (5) /* Relative Humidity */
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+#define RT_SENSOR_CLASS_BARO (6) /* Barometer */
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+#define RT_SENSOR_CLASS_LIGHT (7) /* Ambient light */
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+#define RT_SENSOR_CLASS_PROXIMITY (8) /* Proximity */
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+#define RT_SENSOR_CLASS_HR (9) /* Heart Rate */
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+#define RT_SENSOR_CLASS_TVOC (10) /* TVOC Level */
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+#define RT_SENSOR_CLASS_NOISE (11) /* Noise Loudness */
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+#define RT_SENSOR_CLASS_STEP (12) /* Step sensor */
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+#define RT_SENSOR_CLASS_FORCE (13) /* Force sensor */
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+#define RT_SENSOR_CLASS_DUST (14) /* Dust sensor */
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+#define RT_SENSOR_CLASS_ECO2 (15) /* eCO2 sensor */
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+#define RT_SENSOR_CLASS_GNSS (16) /* GPS/GNSS sensor */
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+#define RT_SENSOR_CLASS_TOF (17) /* TOF sensor */
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+
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+/* Sensor vendor types */
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+
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+#define RT_SENSOR_VENDOR_UNKNOWN (0)
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+#define RT_SENSOR_VENDOR_STM (1) /* STMicroelectronics */
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+#define RT_SENSOR_VENDOR_BOSCH (2) /* Bosch */
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+#define RT_SENSOR_VENDOR_INVENSENSE (3) /* Invensense */
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+#define RT_SENSOR_VENDOR_SEMTECH (4) /* Semtech */
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+#define RT_SENSOR_VENDOR_GOERTEK (5) /* Goertek */
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+#define RT_SENSOR_VENDOR_MIRAMEMS (6) /* MiraMEMS */
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+#define RT_SENSOR_VENDOR_DALLAS (7) /* Dallas */
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+#define RT_SENSOR_VENDOR_ASAIR (8) /* Aosong */
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+#define RT_SENSOR_VENDOR_SHARP (9) /* Sharp */
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+#define RT_SENSOR_VENDOR_SENSIRION (10) /* Sensirion */
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+#define RT_SENSOR_VENDOR_TI (11) /* Texas Instruments */
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+#define RT_SENSOR_VENDOR_PLANTOWER (12) /* Plantower */
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+#define RT_SENSOR_VENDOR_AMS (13) /* ams AG */
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+#define RT_SENSOR_VENDOR_MAXIM (14) /* Maxim Integrated */
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+
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+
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+/* Sensor unit types */
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+
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+#define RT_SENSOR_UNIT_NONE (0)
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+#define RT_SENSOR_UNIT_MG (1) /* Accelerometer unit: mG */
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+#define RT_SENSOR_UNIT_MDPS (2) /* Gyroscope unit: mdps */
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+#define RT_SENSOR_UNIT_MGAUSS (3) /* Magnetometer unit: mGauss */
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+#define RT_SENSOR_UNIT_LUX (4) /* Ambient light unit: lux */
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+#define RT_SENSOR_UNIT_CM (5) /* Distance unit: cm */
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+#define RT_SENSOR_UNIT_PA (6) /* Barometer unit: pa */
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+#define RT_SENSOR_UNIT_PERMILLAGE (7) /* Relative Humidity unit: permillage */
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+#define RT_SENSOR_UNIT_DCELSIUS (8) /* Temperature unit: dCelsius */
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+#define RT_SENSOR_UNIT_HZ (9) /* Frequency unit: HZ */
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+#define RT_SENSOR_UNIT_ONE (10) /* Dimensionless quantity unit: 1 */
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+#define RT_SENSOR_UNIT_BPM (11) /* Heart rate unit: bpm */
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+#define RT_SENSOR_UNIT_MM (12) /* Distance unit: mm */
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+#define RT_SENSOR_UNIT_MN (13) /* Force unit: mN */
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+#define RT_SENSOR_UNIT_PPM (14) /* Concentration unit: ppm */
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+#define RT_SENSOR_UNIT_PPB (15) /* Concentration unit: ppb */
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+#define RT_SENSOR_UNIT_DMS (16) /* Coordinates unit: DMS */
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+#define RT_SENSOR_UNIT_DD (17) /* Coordinates unit: DD */
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+
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+/* Sensor communication interface types */
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+
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+#define RT_SENSOR_INTF_I2C (1 << 0)
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+#define RT_SENSOR_INTF_SPI (1 << 1)
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+#define RT_SENSOR_INTF_UART (1 << 2)
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+#define RT_SENSOR_INTF_ONEWIRE (1 << 3)
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+
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+/* Sensor power mode types */
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+
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+#define RT_SENSOR_POWER_NONE (0)
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+#define RT_SENSOR_POWER_DOWN (1) /* power down mode */
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+#define RT_SENSOR_POWER_NORMAL (2) /* normal-power mode */
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+#define RT_SENSOR_POWER_LOW (3) /* low-power mode */
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+#define RT_SENSOR_POWER_HIGH (4) /* high-power mode */
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+
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+/* Sensor work mode types */
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+
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+#define RT_SENSOR_MODE_NONE (0)
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+#define RT_SENSOR_MODE_POLLING (1) /* One shot only read a data */
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+#define RT_SENSOR_MODE_INT (2) /* TODO: One shot interrupt only read a data */
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+#define RT_SENSOR_MODE_FIFO (3) /* TODO: One shot interrupt read all fifo data */
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+
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+/* Sensor control cmd types */
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+
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+#define RT_SENSOR_CTRL_GET_ID (0) /* Get device id */
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+#define RT_SENSOR_CTRL_GET_INFO (1) /* Get sensor info */
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+#define RT_SENSOR_CTRL_SET_RANGE (2) /* Set the measure range of sensor. unit is info of sensor */
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+#define RT_SENSOR_CTRL_SET_ODR (3) /* Set output date rate. unit is HZ */
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+#define RT_SENSOR_CTRL_SET_MODE (4) /* Set sensor's work mode. ex. RT_SENSOR_MODE_POLLING,RT_SENSOR_MODE_INT */
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+#define RT_SENSOR_CTRL_SET_POWER (5) /* Set power mode. args type of sensor power mode. ex. RT_SENSOR_POWER_DOWN,RT_SENSOR_POWER_NORMAL */
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+#define RT_SENSOR_CTRL_SELF_TEST (6) /* Take a self test */
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+
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+#define RT_SENSOR_CTRL_USER_CMD_START 0x100 /* User commands should be greater than 0x100 */
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+
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+struct rt_sensor_info
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+{
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+ rt_uint8_t type; /* The sensor type */
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+ rt_uint8_t vendor; /* Vendor of sensors */
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+ const char *model; /* model name of sensor */
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+ rt_uint8_t unit; /* unit of measurement */
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+ rt_uint8_t intf_type; /* Communication interface type */
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+ rt_int32_t range_max; /* maximum range of this sensor's value. unit is 'unit' */
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+ rt_int32_t range_min; /* minimum range of this sensor's value. unit is 'unit' */
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+ rt_uint32_t period_min; /* Minimum measurement period,unit:ms. zero = not a constant rate */
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+ rt_uint8_t fifo_max;
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+};
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+
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+struct rt_sensor_intf
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+{
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+ char *dev_name; /* The name of the communication device */
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+ rt_uint8_t type; /* Communication interface type */
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+ void *user_data; /* Private data for the sensor. ex. i2c addr,spi cs,control I/O */
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+};
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+
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+struct rt_sensor_config
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+{
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+ struct rt_sensor_intf intf; /* sensor interface config */
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+ struct rt_device_pin_mode irq_pin; /* Interrupt pin, The purpose of this pin is to notification read data */
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+ rt_uint8_t mode; /* sensor work mode */
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+ rt_uint8_t power; /* sensor power mode */
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+ rt_uint16_t odr; /* sensor out data rate */
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+ rt_int32_t range; /* sensor range of measurement */
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+};
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+
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+typedef struct rt_sensor_device *rt_sensor_t;
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+
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+struct rt_sensor_device
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+{
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+ struct rt_device parent; /* The standard device */
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+
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+ struct rt_sensor_info info; /* The sensor info data */
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+ struct rt_sensor_config config; /* The sensor config data */
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+
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+ void *data_buf; /* The buf of the data received */
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+ rt_size_t data_len; /* The size of the data received */
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+
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+ const struct rt_sensor_ops *ops; /* The sensor ops */
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+
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+ struct rt_sensor_module *module; /* The sensor module */
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+
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+ rt_err_t (*irq_handle)(rt_sensor_t sensor); /* Called when an interrupt is generated, registered by the driver */
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+};
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+
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+struct rt_sensor_module
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+{
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+ rt_mutex_t lock; /* The module lock */
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+
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+ rt_sensor_t sen[RT_SENSOR_MODULE_MAX]; /* The module contains a list of sensors */
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+ rt_uint8_t sen_num; /* Number of sensors contained in the module */
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+};
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+
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+/* 3-axis Data Type */
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+struct sensor_3_axis
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+{
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+ rt_int32_t x;
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+ rt_int32_t y;
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+ rt_int32_t z;
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+};
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+
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+struct coordinates
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+{
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+ double longitude;
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+ double latitude;
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+};
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+
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+struct rt_sensor_data
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+{
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+ rt_uint32_t timestamp; /* The timestamp when the data was received */
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+ rt_uint8_t type; /* The sensor type of the data */
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+ union
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+ {
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+ struct sensor_3_axis acce; /* Accelerometer. unit: mG */
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+ struct sensor_3_axis gyro; /* Gyroscope. unit: mdps */
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+ struct sensor_3_axis mag; /* Magnetometer. unit: mGauss */
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+ struct coordinates coord; /* Coordinates unit: degrees */
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+ rt_int32_t temp; /* Temperature. unit: dCelsius */
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+ rt_int32_t humi; /* Relative humidity. unit: permillage */
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+ rt_int32_t baro; /* Pressure. unit: pascal (Pa) */
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+ rt_int32_t light; /* Light. unit: lux */
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+ rt_int32_t proximity; /* Distance. unit: centimeters */
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+ rt_int32_t hr; /* Heart rate. unit: bpm */
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+ rt_int32_t tvoc; /* TVOC. unit: permillage */
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+ rt_int32_t noise; /* Noise Loudness. unit: HZ */
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+ rt_uint32_t step; /* Step sensor. unit: 1 */
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+ rt_int32_t force; /* Force sensor. unit: mN */
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+ rt_uint32_t dust; /* Dust sensor. unit: ug/m3 */
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+ rt_uint32_t eco2; /* eCO2 sensor. unit: ppm */
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+ } data;
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+};
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+
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+struct rt_sensor_ops
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+{
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+ rt_size_t (*fetch_data)(struct rt_sensor_device *sensor, void *buf, rt_size_t len);
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+ rt_err_t (*control)(struct rt_sensor_device *sensor, int cmd, void *arg);
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+};
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+
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+int rt_hw_sensor_register(rt_sensor_t sensor,
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+ const char *name,
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+ rt_uint32_t flag,
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+ void *data);
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+
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+#ifdef __cplusplus
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+}
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+#endif
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+
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+#endif /* __SENSOR_H__ */
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wangqiang