487 lines
12 KiB
C
487 lines
12 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "adc.h"
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#include "i2c.h"
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#include "tim.h"
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#include "usart.h"
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#include "gpio.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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#include "ads1015_driver.h"
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#include "digital_outputs_driver.h"
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#include "ad5934_driver.h"
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#include "rs485_driver.h"
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#include <string.h>
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE BEGIN PV */
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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/* USER CODE BEGIN PFP */
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void intToStr(int16_t N, uint8_t *str);
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void FloatToString(uint8_t * buf, double val);
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void Convert2Hex(uint32_t value, char *str);
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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uint8_t tempString[15] = {0};
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uint8_t averages = 0;
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uint8_t newline = '\n';
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// Variables for timing
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uint32_t previous_millis_green = 0;
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uint32_t previous_millis_red = 0;
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uint32_t current_millis;
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float reference_resistor_100R = 0, reference_resistor_1K = 0, temperature_RTD = 0, thermal_compensaded_EC = 0;
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float mag_rtd_reference = 0, mag_ec_reference = 0, mag_rtd = 0, mag_ec = 0;
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_ADC1_Init();
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MX_ADC2_Init();
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MX_I2C1_Init();
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MX_I2C2_Init();
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MX_USART1_UART_Init();
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MX_TIM3_Init();
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/* USER CODE BEGIN 2 */
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HAL_TIM_Base_Start_IT(&htim3);
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HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4, GPIO_PIN_SET); // LED Green Off
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HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); // LED Red Off
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digital_outputs_init();
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rs485_init();
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ADG715_ResetChannels();
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ADS1015_Init(); // Initializes pH Measurement
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AD5934_Init(); // Initializes CE and RTD Measurement
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while(averages<50)
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{
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AD5934_Process_System();
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ADS1015_Process_System();
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current_millis = g_ms_counter;
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if((current_millis % 20) == 0) // Send data each 40ms
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{
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averages++;
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}
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}
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digital_outputs_toggle(0);
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while (1)
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{
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AD5934_Process_System();
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ADS1015_Process_System();
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current_millis = g_ms_counter;
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if((current_millis % 500) == 0) // Send data each 100ms
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{
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if (g_rtd_filter.value_valid) // PT100 or PT1000 in °C
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{
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temperature_RTD = AD5934_Calculate_Temperature(g_ref_100R_LowGain_filter.filtered_value, g_ref_1K_MidGain_filter.filtered_value, g_rtd_filter.filtered_value);// AD5934_GetImpedance(mag_reference,mag_rtd);//
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//uint16_t rtd_final = AD5934_RTD_OUT_SCALE_MAX - AD5934_Compress_To_IntScale(g_rtd_filter.filtered_value, current_rtd_mux);
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//uint16_t rtd_final = AD5934_Compress_To_IntScale(temperature_RTD, current_rtd_mux);
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//intToStr(rtd_final, tempString);
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FloatToString(tempString, temperature_RTD);
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rs485_send_broadcast(tempString, (strlen((uint8_t*)tempString)));
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rs485_send_broadcast(&newline, 1);
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}
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if (g_ec_filter.value_valid) // EC
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{
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mag_ec = AD5934_GetAdmittance(g_ref_100R_MidGain_filter.filtered_value, g_ref_1K_MidGain_filter.filtered_value, g_ref_1K_HighGain_filter.filtered_value, g_ref_10K_HighGain_filter.filtered_value, g_ec_filter.filtered_value);
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thermal_compensaded_EC = AD5934_EC_Compensate_Magnitude_To_25C(mag_ec, temperature_RTD);
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//FloatToString(tempString, thermal_compensaded_EC);
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//rs485_send_broadcast(tempString, (strlen((uint8_t*)tempString)));
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//rs485_send_broadcast(&newline, 1);
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uint16_t ec_final = AD5934_Compress_To_IntScale(thermal_compensaded_EC, current_ec_mux);
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intToStr(ec_final, tempString);
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rs485_send_broadcast(tempString, (strlen((uint8_t*)tempString)));
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rs485_send_broadcast(&newline, 1);
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}
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if (g_ph_filter.value_valid) // pH
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{
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uint16_t ph_final = ADS1015_Compress_To_IntScale(g_ph_filter.filtered_value);
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intToStr(ph_final, tempString);
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//float ph_final = g_ph_filter.filtered_value;
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//FloatToString(tempString, ph_final);
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rs485_send_broadcast(tempString, (strlen((uint8_t*)tempString)));
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rs485_send_broadcast(&newline, 1);
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rs485_send_broadcast(&newline, 1);
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}
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rs485_send_broadcast(&newline, 1);
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}
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// Piscar LED verde em PB4 a cada 1 segundo
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if ((current_millis - previous_millis_green) >= 1000)
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{
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previous_millis_green = current_millis;
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HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_4);
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}
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/*
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// Piscar LED vermelho em PB5 a cada 0,5 segundos
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if ((current_millis - previous_millis_red) >= 500)
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{
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previous_millis_red = current_millis;
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HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);
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}*/
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}
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
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/** Initializes the RCC Oscillators according to the specified parameters
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* in the RCC_OscInitTypeDef structure.
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
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{
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Error_Handler();
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}
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PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
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PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV8;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/* USER CODE BEGIN 4 */
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/***************************************************************************//**
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* @brief Converts a float value to a character array with 3 digits of accuracy.
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*
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* @param *buf - returns the converterd value
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* @param val - value to be converted
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*
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* @return None.
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*******************************************************************************/
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void FloatToString(uint8_t *buf, double val)
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{
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char temp[20]; // Buffer auxiliar para construção segura
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int i = 0;
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// 1. Tratar sinal negativo
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if (val < 0) {
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temp[i++] = '-';
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val = -val;
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}
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// 2. Separar parte inteira e fracionária
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long intPart = (long)val;
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// Multiplicamos por 1000 para obter 3 casas decimais fixas
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int fracPart = (int)((val - (double)intPart) * 1000.0 + 0.5);
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// 3. Converter a parte inteira para o buffer temp
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// Usamos um buffer temporário de inversão para não precisar de lógica complexa de ponteiro
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char intRev[12];
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int j = 0;
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if (intPart == 0) {
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intRev[j++] = '0';
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} else {
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while (intPart > 0) {
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intRev[j++] = (intPart % 10) + '0';
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intPart /= 10;
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}
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}
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// Inverter a parte inteira de volta para o buffer principal
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for (int k = j - 1; k >= 0; k--) {
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temp[i++] = intRev[k];
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}
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// 4. Adicionar o ponto decimal e a parte fracionária (sempre 3 casas)
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temp[i++] = '.';
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// Garantir que a parte fracionária tenha sempre 3 dígitos (ex: .005 em vez de .5)
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int fracBuffer[3];
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fracBuffer[2] = fracPart % 10; // Unidade
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fracBuffer[1] = (fracPart / 10) % 10; // Dezena
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fracBuffer[0] = (fracPart / 100) % 10; // Centena
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for (int k = 0; k <= 2; k++) {
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temp[i++] = fracBuffer[k] + '0';
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}
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// 5. Finalizar a string com o caractere nulo
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temp[i] = '\0';
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// 6. Copiar para o buffer de destino final (sem risco de lixo)
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int destIdx = 0;
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while (temp[destIdx] != '\0' && destIdx < 15) { // Limite de segurança
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buf[destIdx] = temp[destIdx];
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destIdx++;
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}
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buf[destIdx] = '\0';
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}
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void intToStr(int16_t N, uint8_t *str)
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{
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int16_t i = 0;
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int16_t sign = N;
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uint8_t max_len = 15; // Tamanho máximo do buffer
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uint8_t width = 4; // mínimo 4 caracteres
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// Trata o caso do número zero isoladamente
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if (N == 0)
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{
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// Preenche com zeros à esquerda até atingir a largura desejada
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while (width > 1 && i < (max_len - 1))
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{
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str[i++] = '0';
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width--;
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}
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str[i++] = '0';
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str[i] = '\0';
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return;
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}
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if (N < 0)
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N = -N;
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// Extração dos dígitos
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while (N > 0)
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{
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if (i >= (max_len - 1))
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break; // Proteção de estouro
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str[i++] = (N % 10) + '0';
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N /= 10;
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}
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// Adiciona o sinal de menos se necessário
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if (sign < 0)
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{
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if (i < (max_len - 1))
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str[i++] = '-';
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}
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// Preenche com zeros à esquerda (considerando o espaço ocupado pelos dígitos e sinal)
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while (i < width && i < (max_len - 1))
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{
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str[i++] = '0';
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}
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str[i] = '\0';
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// Inverte a string para colocar na ordem correta
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for (uint8_t j = 0, k = i - 1; j < k; j++, k--)
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{
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uint8_t temp = str[j];
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str[j] = str[k];
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str[k] = temp;
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}
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}
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/**
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* Converte um valor uint32_t para string hexadecimal,
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* escrevendo o resultado no buffer apontado por 'str'.
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*
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* @param value Valor a ser convertido (ex: 4276803469)
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* @param str Ponteiro para buffer de destino (mínimo 9 bytes:
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* 8 dígitos hex + terminador nulo)
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*/
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void Convert2Hex(uint32_t value, char *str)
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{
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const char hexTable[] = "0123456789ABCDEF";
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for (int8_t i = 7; i >= 0; i--)
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{
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str[i] = hexTable[value & 0xF];
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value >>= 4;
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}
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//str[8] = '\0';
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}
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/* TIM3 Timer Interrupt */
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void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
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{
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if (htim->Instance == TIM3)
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{
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g_ms_counter++; /* Relógio global do sistema */
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}
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}
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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__disable_irq();
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while (1)
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{
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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