da321e43f5
Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/*
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* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Credits to Adafruit.
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* Based on Adafruit BMP085 library.
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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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#pragma once
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#include <string>
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#include <math.h>
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#include <mraa/pwm.h>
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#include <mraa/aio.h>
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#include <mraa/gpio.h>
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#include <pthread.h>
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#define HIGH 1
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#define LOW 0
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#define TRUE HIGH
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#define FALSE LOW
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/*!
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* @struct clbk_data
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* @brief callback data
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*/
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struct clbk_data {
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int is_heart_beat; /**< heart beat check */
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};
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typedef void (* callback_handler) (clbk_data);
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/*!
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* @struct pulsensor_context
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* @brief The context for the heartbeat pulse sensor
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*/
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struct pulsensor_context {
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pthread_t sample_thread; /**< Thread for the code sample */
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uint32_t sample_counter; /**< Counter for the code sample */
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uint32_t last_beat_time; /**< Last heart beat time */
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int threshold; /**< Threshold */
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int ibi_rate[10]; /**< ibi rate */
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int ibi; /**< ibi */
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int trough; /**< Trough */
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int peak; /**< Peak */
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int bpm; /**< Bits per minute */
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int apmlitude; /**< Amplitude */
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uint8_t qs; /**< qs */
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uint8_t is_pulse; /**< Is pulse check */
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uint8_t first_beat; /**< First heart beat */
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uint8_t second_beat; /**< Second heart beat */
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uint8_t pin; /**< Pin */
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uint8_t ret; /**< Return value */
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mraa_aio_context pin_ctx; /**< The pin context */
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callback_handler callback; /**< The callback function */
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};
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static volatile uint16_t ctx_counter = 0;
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void init_pulsensor (pulsensor_context * ctx, callback_handler handler);
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void start_sampler (pulsensor_context * ctx);
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void stop_sampler (pulsensor_context * ctx);
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void * do_sample (void * arg);
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