2016-09-01 12:02:29 -07:00
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/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Abhishek Malik <abhishek.malik@intel.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef GP2Y0A_GP2Y0A_H_
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#define GP2Y0A_GP2Y0A_H_
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <malloc.h>
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#include "upm.h"
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#include "mraa/aio.h"
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2016-09-26 17:28:21 -07:00
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/**
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* @file gp2y0a.h
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* @library gp2y0a
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* @brief C API for GP2Y0A IR Proximity Sensors
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*
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* @include gp2y0a.c
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*/
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2016-09-01 12:02:29 -07:00
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/**
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* device context
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*/
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typedef struct _gp2y0a_context {
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mraa_aio_context aio;
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2018-01-08 13:25:55 -08:00
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int pin;
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2016-09-01 12:02:29 -07:00
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int a_res;
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} *gp2y0a_context;
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/**
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* GP2Y0A sensor init function
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*
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* @param pin Analog pin to use
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* @param a_ref reference voltage
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*/
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2018-01-08 13:25:55 -08:00
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gp2y0a_context gp2y0a_init(int pin, float a_ref);
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2016-09-01 12:02:29 -07:00
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/**
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* GP2Y0A close function
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*
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* @param dev sensor struct
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*/
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void gp2y0a_close(gp2y0a_context dev);
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/**
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* Gets an average voltage value from the sensor
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*
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* @param dev sensor struct
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* @param aref Reference voltage in use (usually 5.0V or 3.3V)
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* @param samples Number of samples to average over
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* @return Average voltage reading
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*/
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upm_result_t gp2y0a_get_value(gp2y0a_context dev, float a_ref, uint8_t samples,
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float* val);
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#endif /* GP2Y0A_GP2Y0A_H_ */
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