| /* |
| * Author: Jon Trulson <jtrulson@ics.com> |
| * Copyright (c) 2014 Intel Corporation. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #pragma once |
| |
| #include <string> |
| #include <mraa/aio.h> |
| |
| namespace upm { |
| |
| /** |
| * @brief ENC03R Single Axis Gyro library |
| * @defgroup enc03r libupm-enc03r |
| * @ingroup seeed analog compass robok |
| */ |
| |
| /** |
| * @library enc03r |
| * @sensor enc03r |
| * @comname ENC03R Single Axis Gyro |
| * @altname Grove Single Axis Analog Gyro |
| * @type compass |
| * @man seeed |
| * @con analog |
| * @kit robok |
| * |
| * @brief API for the ENC03R Single Axis Analog Gyro |
| * |
| * UPM module for the ENC03R single axis analog gyro. |
| * This gyroscope measures x-axis angular velocity, that is |
| * how fast the sensor is rotating around the x-axis. |
| * Calibration of the sensor is necessary for accurate readings. |
| * |
| * @image html enc03r.jpg |
| * @snippet enc03r.cxx Interesting |
| */ |
| class ENC03R { |
| public: |
| |
| /** |
| * ENC03R sensor constructor |
| * |
| * @param pin Analog pin to use |
| * @param vref Reference voltage to use; default is 5.0 V |
| */ |
| ENC03R(int pin, float vref=5.0); |
| |
| /** |
| * ENC03R destructor |
| */ |
| ~ENC03R(); |
| |
| /** |
| * Calibrates the sensor by determining an analog reading over many |
| * samples with no movement of the sensor. This must be done |
| * before attempting to use the sensor. |
| * |
| * @param samples Number of samples to use for calibration |
| */ |
| void calibrate(unsigned int samples); |
| |
| /** |
| * Returns the raw value of the sensor |
| * |
| * @return Raw value of the sensor |
| */ |
| unsigned int value(); |
| |
| /** |
| * Returns the currently stored calibration value |
| * |
| * @return Current calibration value |
| */ |
| float calibrationValue() { return m_calibrationValue; }; |
| |
| /** |
| * Computes angular velocity based on the value and stored calibration |
| * reference. |
| * |
| * @param val Value to use to compute angular velocity |
| * @return Computed angular velocity |
| */ |
| double angularVelocity(unsigned int val); |
| |
| private: |
| // determined by calibrate(); |
| float m_calibrationValue; |
| |
| // reference voltage |
| float m_vref; |
| mraa_aio_context m_aio; |
| }; |
| } |
| |
| |