1 /* 2 * Copyright (c) 2023 Juan Manuel Cruz <jcruz@fi.uba.ar> <jcruz@frba.utn.edu.ar>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 * @file : task_b.c 33 * @date : Set 26, 2023 34 * @author : Juan Manuel Cruz <jcruz@fi.uba.ar> <jcruz@frba.utn.edu.ar> 35 * @version v1.0.0 36 */ 37 38 /********************** inclusions *******************************************/ 39 /* Project includes */ 40 #include "main.h" 41 42 /* Demo includes */ 43 #include "logger.h" 44 #include "dwt.h" 45 46 /* Application & Tasks includes */ 47 #include "board.h" 48 #include "app.h" 49 50 /********************** macros and definitions *******************************/ 51 #define G_TASK_B_CNT_INI 0ul 52 53 #define TASK_B_CNT_INI 0ul 54 #define TASK_B_CNT_MAX 50ul 55 56 #define TASK_B_DEL_INI 0ul 57 #define TASK_B_DEL_MAX 500ul 58 59 /********************** internal data declaration ****************************/ 60 61 /********************** internal functions declaration ***********************/ 62 63 /********************** internal data definition *****************************/ 64 const char *p_task_b = "Task B - Non-Blocking Code"; 65 66 /********************** external data declaration ****************************/ 67 uint32_t g_task_b_cnt; 68 69 /********************** external functions definition ************************/ 70 void task_b_init(void *parameters) 71 { 72 /* Print out: Task Initialized */ 73 LOGGER_INFO(" "); 74 LOGGER_INFO(" %s is running - %s", GET_NAME(task_b_init), p_task_b); 75 76 /* Init & Print out: Task execution counter */ 77 g_task_b_cnt = G_TASK_B_CNT_INI; 78 LOGGER_INFO(" %s = %lu", GET_NAME(g_task_b_cnt), g_task_b_cnt); 79 } 80 81 void task_b_update(void *parameters) 82 { 83 #if (TEST_X == TEST_0) 84 85 /* Memory Layout of C Programs (https://www.geeksforgeeks.org/) */ 86 /* Storage Classes in C (https://www.geeksforgeeks.org/) */ 87 /* C Variables (https://www.geeksforgeeks.org/) */ 88 /* Static Variables in C (https://www.geeksforgeeks.org/) */ 89 /* Initialization of static variables in C 90 * (https://www.geeksforgeeks.org/) */ 91 /* Internal static variable vs. External static variable with Examples in C 92 * (https://www.geeksforgeeks.org/) */ 93 /* 94 * Static variables have the property of preserving their value even after 95 * they are out of their scope! 96 * Hence, a static variable preserves its previous value in its previous 97 * scope and is not initialized again in the new scope. 98 */ 99 static uint32_t task_b_cnt = TASK_B_CNT_INI; 100 101 /* Update Task Counter */ 102 g_task_b_cnt++; 103 104 /* Blocking and Non-Blocking in Node.js (https://www.geeksforgeeks.org/) */ 105 /* 106 * Non-Blocking: It refers to the program that does not block the 107 * execution of further operations. 108 * Non-Blocking methods are executed asynchronously. 109 * Asynchronously means that the program may not necessarily execute line 110 * by line. 111 * The program calls the function and move to the next operation and does 112 * not wait for it to return. 113 */ 114 if (task_b_cnt < TASK_B_CNT_MAX) 115 task_b_cnt++; 116 else 117 task_b_cnt = TASK_B_CNT_INI; 118 119 #endif 120 121 #if (TEST_X == TEST_1) 122 123 static uint32_t then = TASK_B_DEL_INI; 124 static uint32_t now = TASK_B_DEL_INI; 125 126 /* Check the current tick */ 127 now = HAL_GetTick(); 128 if ((now - then) >= TASK_B_DEL_MAX) 129 { 130 /* Only if the current tick is TASK_B_DEL_MAX mS after the last */ 131 /* Reset then = now */ 132 then = now; 133 } 134 135 #endif 136 137 #if (TEST_X == TEST_2) 138 139 /* Here Chatbot Artificial Intelligence generated code */ 140 141 #endif 142 } 143 144 /********************** end of file ******************************************/
