1 /* 2 * Author: Andrei Vasiliu <andrei.vasiliu@intel.com> 3 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com> 4 * Copyright (c) 2015 Intel Corporation. 5 * 6 * Credits to Adafruit. 7 * Based on Adafruit BMP085 library. 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining 10 * a copy of this software and associated documentation files (the 11 * "Software"), to deal in the Software without restriction, including 12 * without limitation the rights to use, copy, modify, merge, publish, 13 * distribute, sublicense, and/or sell copies of the Software, and to 14 * permit persons to whom the Software is furnished to do so, subject to 15 * the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be 18 * included in all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 24 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 25 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 26 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 */ 28 #pragma once 29 30 #include <string> 31 #include <math.h> 32 #include <mraa/pwm.hpp> 33 #include <mraa/aio.hpp> 34 #include <mraa/gpio.hpp> 35 #include <pthread.h> 36 37 #define HIGH 1 38 #define LOW 0 39 40 #define TRUE HIGH 41 #define FALSE LOW 42 43 /** 44 * @brief Pulsensor Pulse Sensor library 45 * @defgroup pulsensor libupm-pulsensor 46 * @ingroup seeed analog medical 47 */ 48 /** 49 * @library pulsensor 50 * @sensor pulsensor 51 * @comname Pulse Sensor 52 * @type medical 53 * @man seeed 54 * @web http://www.adafruit.com/products/1093 55 * @con analog 56 * 57 * @brief C++ API for the 3-Wire Pulse Sensor 58 * 59 * This is a library for a 3-wire pulse sensor sold by several manufacturers. 60 * Usually, you can identify the sensor based on the round breakout and the 61 * distinctive heart symbol. 62 * 63 * @image html pulsensor.jpg 64 * @snippet pulsensor.cxx Interesting 65 */ 66 67 /*! 68 * @struct clbk_data 69 * @brief callback data 70 */ 71 struct clbk_data { 72 int is_heart_beat; /**< heartbeat check */ 73 }; 74 75 76 #if defined(SWIGJAVA) || defined(JAVACALLBACK) 77 #include "Callback.h" 78 #else 79 typedef void (* callback_handler) (clbk_data); 80 #endif 81 82 /*! 83 * @class Pulsensor 84 * @brief The context for the heartbeat pulse sensor 85 */ 86 class Pulsensor { 87 88 public: 89 #if defined(SWIGJAVA) || defined(JAVACALLBACK) 90 Pulsensor(Callback *callback); 91 #else 92 Pulsensor(callback_handler handler); 93 #endif 94 void start_sampler(); 95 void stop_sampler(); 96 97 private: 98 static void *do_sample(void *arg); 99 pthread_t sample_thread; /**< Thread for the code sample */ 100 uint32_t sample_counter; /**< Counter for the code sample */ 101 uint32_t last_beat_time; /**< Last heartbeat time */ 102 int threshold; /**< Threshold */ 103 int ibi_rate[10]; /**< ibi rate */ 104 int ibi; /**< ibi */ 105 int trough; /**< Trough */ 106 int peak; /**< Peak */ 107 int bpm; /**< Bits per minute */ 108 int apmlitude; /**< Amplitude */ 109 uint8_t qs; /**< qs */ 110 uint8_t is_pulse; /**< Is pulse check */ 111 uint8_t first_beat; /**< First heartbeat */ 112 uint8_t second_beat; /**< Second heartbeat */ 113 uint8_t pin; /**< Pin */ 114 uint8_t ret; /**< Return value */ 115 mraa::Aio pin_ctx; /**< The pin context */ 116 #if defined(SWIGJAVA) || defined(JAVACALLBACK) 117 Callback *obj_callback; /**< The callback object */ 118 #else 119 callback_handler callback; /**< The callback function */ 120 #endif 121 volatile uint16_t ctx_counter; 122 }; 123 124