Diff: Header/Adafruit_Sensor.h

Revision:

0:772bf4786416

Child:

1:8c4f93e10af3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Header/Adafruit_Sensor.h	Sat Mar 21 12:33:05 2015 +0000
@@ -0,0 +1,150 @@
+/*
+* Copyright (C) 2008 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software< /span>
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include <cstdint>
+using namespace std;
+
+/* Update by K. Townsend (Adafruit Industries) for lighter typedefs, and
+ * extended sensor support to include color, voltage and current */
+ 
+#ifndef _ADAFRUIT_SENSOR_H
+#define _ADAFRUIT_SENSOR_H
+
+
+/* Intentionally modeled after sensors.h in the Android API:
+ * https://github.com/android/platform_hardware_libhardware/blob/master/include/hardware/sensors.h */
+
+/* Constants */
+#define SENSORS_GRAVITY_EARTH             (9.80665F)              /**< Earth's gravity in m/s^2 */
+#define SENSORS_GRAVITY_MOON              (1.6F)                  /**< The moon's gravity in m/s^2 */
+#define SENSORS_GRAVITY_SUN               (275.0F)                /**< The sun's gravity in m/s^2 */
+#define SENSORS_GRAVITY_STANDARD          (SENSORS_GRAVITY_EARTH)
+#define SENSORS_MAGFIELD_EARTH_MAX        (60.0F)                 /**< Maximum magnetic field on Earth's surface */
+#define SENSORS_MAGFIELD_EARTH_MIN        (30.0F)                 /**< Minimum magnetic field on Earth's surface */
+#define SENSORS_PRESSURE_SEALEVELHPA      (1013.25F)              /**< Average sea level pressure is 1013.25 hPa */
+#define SENSORS_DPS_TO_RADS               (0.017453293F)          /**< Degrees/s to rad/s multiplier */
+#define SENSORS_GAUSS_TO_MICROTESLA       (100)                   /**< Gauss to micro-Tesla multiplier */
+
+/** Sensor types */
+typedef enum
+{
+  SENSOR_TYPE_ACCELEROMETER         = (1),   /**< Gravity + linear acceleration */
+  SENSOR_TYPE_MAGNETIC_FIELD        = (2),
+  SENSOR_TYPE_ORIENTATION           = (3),
+  SENSOR_TYPE_GYROSCOPE             = (4),
+  SENSOR_TYPE_LIGHT                 = (5),
+  SENSOR_TYPE_PRESSURE              = (6),
+  SENSOR_TYPE_PROXIMITY             = (8),
+  SENSOR_TYPE_GRAVITY               = (9),
+  SENSOR_TYPE_LINEAR_ACCELERATION   = (10),  /**< Acceleration not including gravity */
+  SENSOR_TYPE_ROTATION_VECTOR       = (11),
+  SENSOR_TYPE_RELATIVE_HUMIDITY     = (12),
+  SENSOR_TYPE_AMBIENT_TEMPERATURE   = (13),
+  SENSOR_TYPE_VOLTAGE               = (15),
+  SENSOR_TYPE_CURRENT               = (16),
+  SENSOR_TYPE_COLOR                 = (17)
+} sensors_type_t;
+
+/** struct sensors_vec_s is used to return a vector in a common format. */
+typedef struct {
+    union {
+        float v[3];
+        struct {
+            float x;
+            float y;
+            float z;
+        };
+        /* Orientation sensors */
+        struct {
+            float roll;    /**< Rotation around the longitudinal axis (the plane body, 'X axis'). Roll is positive and increasing when moving downward. -90�<=roll<=90� */
+            float pitch;   /**< Rotation around the lateral axis (the wing span, 'Y axis'). Pitch is positive and increasing when moving upwards. -180�<=pitch<=180�) */
+            float heading; /**< Angle between the longitudinal axis (the plane body) and magnetic north, measured clockwise when viewing from the top of the device. 0-359� */
+        };
+    };
+    int8_t status;
+    uint8_t reserved[3];
+} sensors_vec_t;
+
+/** struct sensors_color_s is used to return color data in a common format. */
+typedef struct {
+    union {
+        float c[3];
+        /* RGB color space */
+        struct {
+            float r;       /**< Red component */
+            float g;       /**< Green component */
+            float b;       /**< Blue component */
+        };
+    };
+    uint32_t rgba;         /**< 24-bit RGBA value */
+} sensors_color_t;
+
+/* Sensor event (36 bytes) */
+/** struct sensor_event_s is used to provide a single sensor event in a common format. */
+typedef struct
+{
+    int32_t version;                          /**< must be sizeof(struct sensors_event_t) */
+    int32_t sensor_id;                        /**< unique sensor identifier */
+    int32_t type;                             /**< sensor type */
+    int32_t reserved0;                        /**< reserved */
+    int32_t timestamp;                        /**< time is in milliseconds */
+    union
+    {
+        float           data[4];
+        sensors_vec_t   acceleration;         /**< acceleration values are in meter per second per second (m/s^2) */
+        sensors_vec_t   magnetic;             /**< magnetic vector values are in micro-Tesla (uT) */
+        sensors_vec_t   orientation;          /**< orientation values are in degrees */
+        sensors_vec_t   gyro;                 /**< gyroscope values are in rad/s */
+        float           temperature;          /**< temperature is in degrees centigrade (Celsius) */
+        float           distance;             /**< distance in centimeters */
+        float           light;                /**< light in SI lux units */
+        float           pressure;             /**< pressure in hectopascal (hPa) */
+        float           relative_humidity;    /**< relative humidity in percent */
+        float           current;              /**< current in milliamps (mA) */
+        float           voltage;              /**< voltage in volts (V) */
+        sensors_color_t color;                /**< color in RGB component values */
+    };
+} sensors_event_t;
+
+/* Sensor details (40 bytes) */
+/** struct sensor_s is used to describe basic information about a specific sensor. */
+typedef struct
+{
+    char     name[12];                        /**< sensor name */
+    int32_t  version;                         /**< version of the hardware + driver */
+    int32_t  sensor_id;                       /**< unique sensor identifier */
+    int32_t  type;                            /**< this sensor's type (ex. SENSOR_TYPE_LIGHT) */
+    float    max_value;                       /**< maximum value of this sensor's value in SI units */
+    float    min_value;                       /**< minimum value of this sensor's value in SI units */
+    float    resolution;                      /**< smallest difference between two values reported by this sensor */
+    int32_t  min_delay;                       /**< min delay in microseconds between events. zero = not a constant rate */
+} sensor_t;
+
+class Adafruit_Sensor {
+ public:
+  // Constructor(s)
+  void constructor();
+
+  // These must be defined by the subclass
+  virtual void enableAutoRange(bool enabled) = 0;
+  virtual void getEvent(sensors_event_t*)    = 0;
+  virtual void getSensor(sensor_t*)          = 0;
+  
+ private:
+  bool _autoRange;
+};
+
+#endif