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_adc.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 ADC_AVG_SAMPLES 8 52 53 /********************** internal data declaration ****************************/ 54 55 56 /********************** internal functions declaration ***********************/ 57 HAL_StatusTypeDef ADC_Poll_Read(uint16_t *value); 58 59 /********************** internal data definition *****************************/ 60 const char *p_task_adc = "Task ADC"; 61 62 /********************** external data declaration *****************************/ 63 64 extern ADC_HandleTypeDef hadc1; 65 66 /********************** external functions definition ************************/ 67 void task_adc_init(void *parameters) 68 { 69 shared_data_type *shared_data = (shared_data_type *) parameters; 70 71 /* Print out: Task Initialized */ 72 LOGGER_LOG(" %s is running - %s\r\n", GET_NAME(task_adc_init), p_task_adc); 73 74 shared_data->adc_end_of_conversion = false; 75 } 76 77 void task_adc_update(void *parameters) 78 { 79 80 shared_data_type *shared_data = (shared_data_type *) parameters; 81 82 if (HAL_OK == ADC_Poll_Read(&shared_data->adc_value)) { 83 shared_data->adc_end_of_conversion = true; 84 } 85 else { 86 LOGGER_LOG("error\n"); 87 } 88 } 89 90 91 // Requests start of conversion, waits until conversion done 92 HAL_StatusTypeDef ADC_Poll_Read(uint16_t *value) { 93 HAL_StatusTypeDef res; 94 uint32_t sum = 0; 95 96 for (int i = 0; i < ADC_AVG_SAMPLES; i++) 97 { 98 if ((res = HAL_ADC_Start(&hadc1)) != HAL_OK) 99 return res; 100 101 if ((res = HAL_ADC_PollForConversion(&hadc1, HAL_MAX_DELAY)) != HAL_OK) 102 return res; 103 104 sum += HAL_ADC_GetValue(&hadc1); 105 HAL_ADC_Stop(&hadc1); 106 } 107 108 *value = (sum / ADC_AVG_SAMPLES); 109 return HAL_OK; 110 } 111 112 113 /********************** end of file ******************************************/
