environmentControl.h

00001 /*!
00002 * \file environmentControl.h
00003 * \author  Karthik Rajagopal <krthik@ti.com>
00004 * \version 0.9.1
00005 *
00006 * \section COPYRIGHT
00007 * TEXAS INSTRUMENTS TEXT FILE LICENSE
00008 * Copyright (c) 2018 Texas Instruments Incorporated
00009 * All rights reserved not granted herein.
00010 * Limited License.
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00023 *
00024 * \section DESCRIPTION
00025 * The file contains class descriptions and methods for environment control
00026 */
00027 
00028 #ifndef ENVIRONMENTCONTROL_H_
00029 #define ENVIRONMENTCONTROL_H_
00030 
00031 #include <stdint.h>
00032 
00033 /*! \class environmentalController
00034 \brief Generic implementation for environment controller
00035 
00036 As part of OPT3101SDK there are several environment specific functions that need to be performed. Examples of such functions are setting up targets at particular distance, setting up chamber temperature. 
00037 These are essential functions to perform the calibration of OPT3101 based system. The setting up of these environment conditions have to be done at specific steps during calibration. 
00038 The template class environmentalController makes this process simple and scalable. Appropriate methods of this class are called at relevant steps in calibration.
00039 Users using this SDK are expected to implement these functions based on the environment setup. <br><br>
00040 The names of the methods reflect the conditions for the environment. For eg: environmentalController::setTargetToInfinity_OR_coverPhotodiode method as the name suggest is a condition
00041 where the OPT3101 system needs to be pointed to infinity (far away from detectable range of system) or the photo diode needs to be covered so no light leaks directly between the transmitter(s) and photo diode.  
00042 These implementations are very specific to the host on which the SDK is ported and run. <br>
00043 This abstract class provides a template with self explanatory method names which the users can override and implement their own functions. <br>
00044 */
00045 class environmentalController {
00046     public:
00047         uint16_t refDistancesInMM[3][2]; ///< Reference distance list to be used for phase offset calibration
00048         /*!
00049         * \brief Constructor to initialize variables to 0
00050         *
00051         * \return Nothing
00052         */
00053         environmentalController();
00054         /*!
00055         * \brief Sets target distance
00056         *
00057         * \param[in] targetDistanceInMM; targetDistanceInMM is the known distance where the target needs to be placed. This is expressed in mm
00058         * \return Nothing
00059         */
00060         void setTargetDistance(uint16_t targetDistanceInMM);
00061         /*!
00062         * \brief Sets chamber temperature
00063         *
00064         * \param[in] chamberTemperatureInC; chamberTemperatureInC is the known temperature the chamber needs to be set to and settled. This is critical for temperature related calibration steps
00065         * \return Nothing
00066         */
00067         void setChamberTemperature(int8_t chamberTemperatureInC);
00068         /*!
00069         * \brief Sets ambient light condition
00070         *
00071         * \param[in] ambientLightInLux; ambientLightInLux is the intensity (in lux) of ambient light to be applied to the system to perform OPT3101::phaseAmbientCoffC measurements
00072         * \return Nothing
00073         */
00074         void setAmbientLight(uint32_t ambientLightInLux);
00075         /*!
00076         * \brief Sets target such that the amplitude of system is very low
00077         * This is a crucial step to determine OPT3101::crosstalkC values for the OPT3101 system. The environmentController is expected to target in such a way that the amplitude of the system reads 
00078         * a low enough value that this can be ignored as crosstalk value. Either setting target to far enough position (or low enough reflectivity) or covering the photo diode would help achieve this
00079         * \return Nothing
00080         */
00081         void setTargetToInfinity_OR_coverPhotodiode();
00082         /*!
00083         * \brief A method used to determine the reference distances to be used for phase offset calibration
00084         * \return Nothing
00085         */
00086         void manuallySetReferenceDistances();
00087 };
00088 
00089 #endif /* ENVIRONMENTCONTROL_H_ */
00090