/* * Copyright (c) 2006-2018, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2019-01-31 flybreak first version */ #ifndef __SENSOR_H__ #define __SENSOR_H__ #include #include #ifdef __cplusplus extern "C" { #endif #ifdef RT_USING_RTC #define rt_sensor_get_ts() time() /* API for the sensor to get the timestamp */ #else #define rt_sensor_get_ts() rt_tick_get() /* API for the sensor to get the timestamp */ #endif #define RT_PIN_NONE 0xFFFF /* RT PIN NONE */ #define RT_DEVICE_FLAG_FIFO_RX 0x200 /* Flag to use when the sensor is open by fifo mode */ #define RT_SENSOR_MODULE_MAX (3) /* The maximum number of members of a sensor module */ /* Sensor types */ #define RT_SENSOR_CLASS_NONE (0) #define RT_SENSOR_CLASS_ACCE (1) /* Accelerometer */ #define RT_SENSOR_CLASS_GYRO (2) /* Gyroscope */ #define RT_SENSOR_CLASS_MAG (3) /* Magnetometer */ #define RT_SENSOR_CLASS_TEMP (4) /* Temperature */ #define RT_SENSOR_CLASS_HUMI (5) /* Relative Humidity */ #define RT_SENSOR_CLASS_BARO (6) /* Barometer */ #define RT_SENSOR_CLASS_LIGHT (7) /* Ambient light */ #define RT_SENSOR_CLASS_PROXIMITY (8) /* Proximity */ #define RT_SENSOR_CLASS_HR (9) /* Heart Rate */ #define RT_SENSOR_CLASS_TVOC (10) /* TVOC Level */ #define RT_SENSOR_CLASS_NOISE (11) /* Noise Loudness */ #define RT_SENSOR_CLASS_STEP (12) /* Step sensor */ /* Sensor vendor types */ #define RT_SENSOR_VENDOR_UNKNOWN (0) #define RT_SENSOR_VENDOR_STM (1) /* STMicroelectronics */ #define RT_SENSOR_VENDOR_BOSCH (2) /* Bosch */ #define RT_SENSOR_VENDOR_INVENSENSE (3) /* Invensense */ #define RT_SENSOR_VENDOR_SEMTECH (4) /* Semtech */ #define RT_SENSOR_VENDOR_GOERTEK (5) /* Goertek */ /* Sensor unit types */ #define RT_SENSOR_UNIT_NONE (0) #define RT_SENSOR_UNIT_MG (1) /* Accelerometer unit: mG */ #define RT_SENSOR_UNIT_MDPS (2) /* Gyroscope unit: mdps */ #define RT_SENSOR_UNIT_MGAUSS (3) /* Magnetometer unit: mGauss */ #define RT_SENSOR_UNIT_LUX (4) /* Ambient light unit: lux */ #define RT_SENSOR_UNIT_CM (5) /* Distance unit: cm */ #define RT_SENSOR_UNIT_PA (6) /* Barometer unit: pa */ #define RT_SENSOR_UNIT_PERMILLAGE (7) /* Relative Humidity unit: permillage */ #define RT_SENSOR_UNIT_DCELSIUS (8) /* Temperature unit: dCelsius */ #define RT_SENSOR_UNIT_HZ (9) /* Frequency unit: HZ */ #define RT_SENSOR_UNIT_ONE (10) /* Dimensionless quantity unit: 1 */ #define RT_SENSOR_UNIT_BPM (11) /* Heart rate unit: bpm */ #define RT_SENSOR_UNIT_MM (12) /* Distance unit: mm */ /* Sensor communication interface types */ #define RT_SENSOR_INTF_I2C (1 << 0) #define RT_SENSOR_INTF_SPI (1 << 1) #define RT_SENSOR_INTF_UART (1 << 2) #define RT_SENSOR_INTF_ONEWIRE (1 << 3) /* Sensor power mode types */ #define RT_SENSOR_POWER_NONE (0) #define RT_SENSOR_POWER_DOWN (1) /* power down mode */ #define RT_SENSOR_POWER_NORMAL (2) /* normal-power mode */ #define RT_SENSOR_POWER_LOW (3) /* low-power mode */ #define RT_SENSOR_POWER_HIGH (4) /* high-power mode */ /* Sensor work mode types */ #define RT_SENSOR_MODE_NONE (0) #define RT_SENSOR_MODE_POLLING (1) /* One shot only read a data */ #define RT_SENSOR_MODE_INT (2) /* TODO: One shot interrupt only read a data */ #define RT_SENSOR_MODE_FIFO (3) /* TODO: One shot interrupt read all fifo data */ /* Sensor control cmd types */ #define RT_SENSOR_CTRL_GET_ID (0) /* Get device id */ #define RT_SENSOR_CTRL_GET_INFO (1) /* Get sensor info */ #define RT_SENSOR_CTRL_SET_RANGE (2) /* Set the measure range of sensor. unit is info of sensor */ #define RT_SENSOR_CTRL_SET_ODR (3) /* Set output date rate. unit is HZ */ #define RT_SENSOR_CTRL_SET_MODE (4) /* Set sensor's work mode. ex. RT_SENSOR_MODE_POLLING,RT_SENSOR_MODE_INT */ #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 */ #define RT_SENSOR_CTRL_SELF_TEST (6) /* Take a self test */ struct rt_sensor_info { rt_uint8_t type; /* The sensor type */ rt_uint8_t vendor; /* Vendor of sensors */ const char *model; /* model name of sensor */ rt_uint8_t unit; /* unit of measurement */ rt_uint8_t intf_type; /* Communication interface type */ rt_int32_t range_max; /* maximum range of this sensor's value. unit is 'unit' */ rt_int32_t range_min; /* minimum range of this sensor's value. unit is 'unit' */ rt_uint32_t period_min; /* Minimum measurement period,unit:ms. zero = not a constant rate */ rt_uint8_t fifo_max; }; struct rt_sensor_intf { char *dev_name; /* The name of the communication device */ rt_uint8_t type; /* Communication interface type */ void *user_data; /* Private data for the sensor. ex. i2c addr,spi cs,control I/O */ }; struct rt_sensor_config { struct rt_sensor_intf intf; /* sensor interface config */ struct rt_device_pin_mode irq_pin; /* Interrupt pin, The purpose of this pin is to notification read data */ rt_uint8_t mode; /* sensor work mode */ rt_uint8_t power; /* sensor power mode */ rt_uint16_t odr; /* sensor out data rate */ rt_int32_t range; /* sensor range of measurement */ }; typedef struct rt_sensor_device *rt_sensor_t; struct rt_sensor_device { struct rt_device parent; /* The standard device */ struct rt_sensor_info info; /* The sensor info data */ struct rt_sensor_config config; /* The sensor config data */ void *data_buf; /* The buf of the data received */ rt_size_t data_len; /* The size of the data received */ const struct rt_sensor_ops *ops; /* The sensor ops */ struct rt_sensor_module *module; /* The sensor module */ rt_err_t (*irq_handle)(rt_sensor_t sensor); /* Called when an interrupt is generated, registered by the driver */ }; struct rt_sensor_module { rt_mutex_t lock; /* The module lock */ rt_sensor_t sen[RT_SENSOR_MODULE_MAX]; /* The module contains a list of sensors */ rt_uint8_t sen_num; /* Number of sensors contained in the module */ }; /* 3-axis Data Type */ struct sensor_3_axis { rt_int32_t x; rt_int32_t y; rt_int32_t z; }; struct rt_sensor_data { rt_uint32_t timestamp; /* The timestamp when the data was received */ rt_uint8_t type; /* The sensor type of the data */ union { struct sensor_3_axis acce; /* Accelerometer. unit: mG */ struct sensor_3_axis gyro; /* Gyroscope. unit: mdps */ struct sensor_3_axis mag; /* Magnetometer. unit: mGauss */ rt_int32_t temp; /* Temperature. unit: dCelsius */ rt_int32_t humi; /* Relative humidity. unit: permillage */ rt_int32_t baro; /* Pressure. unit: pascal (Pa) */ rt_int32_t light; /* Light. unit: lux */ rt_int32_t proximity; /* Distance. unit: centimeters */ rt_int32_t hr; /* Heart rate. unit: bpm */ rt_int32_t tvoc; /* TVOC. unit: permillage */ rt_int32_t noise; /* Noise Loudness. unit: HZ */ rt_uint32_t step; /* Step sensor. unit: 1 */ } data; }; struct rt_sensor_ops { rt_size_t (*fetch_data)(struct rt_sensor_device *sensor, void *buf, rt_size_t len); rt_err_t (*control)(struct rt_sensor_device *sensor, int cmd, void *arg); }; int rt_hw_sensor_register(rt_sensor_t sensor, const char *name, rt_uint32_t flag, void *data); #ifdef __cplusplus } #endif #endif /* __SENSOR_H__ */