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_c.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_C_CNT_INI 0ul 52 #define G_TASK_C_TICK_CNT_INI 0ul 53 54 /********************** internal data declaration ****************************/ 55 56 /********************** internal functions declaration ***********************/ 57 58 /********************** internal data definition *****************************/ 59 const char *p_task_c = "Task C - Update by Time Code"; 60 61 /********************** external data declaration ****************************/ 62 uint32_t g_task_c_cnt; 63 volatile uint32_t g_task_c_tick_cnt; 64 65 /********************** external functions definition ************************/ 66 void task_c_init(void *parameters) 67 { 68 /* Print out: Task Initialized */ 69 LOGGER_INFO(" "); 70 LOGGER_INFO(" %s is running - %s", GET_NAME(task_c_init), p_task_c); 71 72 /* Init & Print out: Task execution counter */ 73 g_task_c_cnt = G_TASK_C_CNT_INI; 74 LOGGER_INFO(" %s = %lu", GET_NAME(g_task_c_cnt), g_task_c_cnt); 75 } 76 77 void task_c_update(void *parameters) 78 { 79 bool b_time_update_required = false; 80 81 /* Protect shared resource */ 82 __asm("CPSID i"); 83 /* disable interrupts */ 84 if (G_TASK_C_TICK_CNT_INI < g_task_c_tick_cnt) { 85 /* Update Tick Counter */ 86 g_task_c_tick_cnt--; 87 b_time_update_required = true; 88 } 89 __asm("CPSIE i"); 90 /* enable interrupts */ 91 92 while (b_time_update_required) { 93 /* Update Task Counter */ 94 g_task_c_cnt++; 95 96 /* Here run code that needs update by time */ 97 /* 98 * For example, update Software Timers 99 * 100 */ 101 102 /* Protect shared resource */ 103 __asm("CPSID i"); 104 /* disable interrupts */ 105 if (G_TASK_C_TICK_CNT_INI < g_task_c_tick_cnt) { 106 /* Update Tick Counter */ 107 g_task_c_tick_cnt--; 108 b_time_update_required = true; 109 } else { 110 b_time_update_required = false; 111 } 112 __asm("CPSIE i"); 113 /* enable interrupts */ 114 } 115 } 116 117 /********************** end of file ******************************************/
