/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2026 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "adc.h" #include "i2c.h" #include "usart.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "ads1015_driver.h" #include "digital_outputs_driver.h" #include "ad5934_driver.h" #include "rs485_driver.h" #include /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ uint8_t rx_buffer[256]; /*!< Buffer for received data */ uint8_t tx_data[] = "Hello RS-485 Broadcast!"; /*!< Data to send */ uint8_t adc_text[6]; uint8_t real_text[6]; uint8_t imag_text[6]; uint8_t rs485_text[6]; uint8_t newline[]={'\r','\n'}; uint8_t doubleSpace[]={'_','_'}; uint8_t newline_ph[]={'_','p','H','\r','\n'}; uint8_t newline_admi[]={'_','m','S','\r','\n'}; uint8_t newline_real[]={'_','°','C','\r','\n'}; uint8_t newline_imag[]={'_','O','h','m','\r','\n'}; uint8_t newline_485[]={'_','a','d','\r','\n'}; uint8_t minus[]={'-',' '}; uint8_t rs485_address=0; ADS1015_I2C i2c; /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ void intToStr(int N, char *str); void FloatToString(char * buf, double val); /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ HAL_StatusTypeDef status0,status1; // Variables to store previous LED states uint8_t previous_green_state = 0; uint8_t previous_red_state = 0; // Variables for timing uint32_t previous_millis_green = 0; uint32_t previous_millis_red = 0; uint32_t current_millis; float temperature_RTD, admittance_EC; /*! Temporary variables */ char tempString[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; long double tempValue = 0; /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_ADC1_Init(); MX_ADC2_Init(); MX_I2C1_Init(); MX_I2C2_Init(); MX_USART1_UART_Init(); /* USER CODE BEGIN 2 */ digital_outputs_init(); // Initialize RS-485 driver rs485_init(); ADS1015(&i2c, &hi2c1, ADS_ADDR_GND); ADSsetGain(&i2c, GAIN_SIXTEEN); // Start CE and RTD Measurement AD5934_Init(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ current_millis = HAL_GetTick(); // Piscar LED verde em PB5 a cada 0,5 segundos if ((current_millis - previous_millis_green) >= 800) { previous_millis_green = current_millis; /*HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5); // Check if state changed and send via RS485 uint8_t current_green_state = HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_5); if (current_green_state != previous_green_state) { previous_green_state = current_green_state; uint8_t led_data[2] = {0x01, current_green_state}; // Command 0x01 for green LED }*/ temperature_RTD = AD5934_GetTemperature(); FloatToString(tempString, temperature_RTD); status0 = rs485_send_broadcast(tempString, (strlen((char*)tempString)-1)); status1 = rs485_send_broadcast(newline_real, strlen((char*)newline_real)); if(edge_state == FALLING_EDGE) { HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_RESET); temp_calib = temperature_RTD; v_ph4 = ADSCalculate_ph_Volts(2048 - ADSreadADC_Differential_0_1(&i2c)); edge_state = NO_EDGE; HAL_Delay(500); }else if(edge_state == RISING_EDGE) { HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4, GPIO_PIN_RESET); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); v_ph7 = ADSCalculate_ph_Volts(2048 - ADSreadADC_Differential_0_1(&i2c)); edge_state = NO_EDGE; HAL_Delay(500); } ph_compensated = ADSCalculate_ph_Compensated((2048 - ADSreadADC_Differential_0_1(&i2c)),temp_calib); FloatToString(tempString, ph_compensated); status0 = rs485_send_broadcast(tempString, (strlen((char*)tempString)-1)); status1 = rs485_send_broadcast(newline_ph, strlen((char*)newline_ph)); admittance_EC = AD5934_GetImpedance(); FloatToString(tempString, admittance_EC); status0 = rs485_send_broadcast(tempString, (strlen((char*)tempString)-1)); status1 = rs485_send_broadcast(newline_admi, strlen((char*)newline_admi)); } // Piscar LED vermelho em PB4 a cada 1 segundo /* if ((current_millis - previous_millis_red) >= 700) { previous_millis_red = current_millis; HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_4); // Check if state changed and send via RS485 uint8_t current_red_state = HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_4); if (current_red_state != previous_red_state) { previous_red_state = current_red_state; uint8_t led_data[2] = {0x02, current_red_state}; // Command 0x02 for red LED } // Check if state changed and send via RS485 rs485_address = rs485_get_address(); intToStr(rs485_address, rs485_text); // Send broadcast message status0 = rs485_send_broadcast(rs485_text, strlen((char*)rs485_text)); status1 = rs485_send_broadcast(newline_485, strlen((char*)newline_485)); status1 = rs485_send_broadcast(newline, strlen((char*)newline)); // Set channels in the Analog Switch //tempByte = ad5934_sample_BL.bytes[0]; //ad5934_sample_BL.bytes[0] = ad5934_sample_BL.bytes[1]; //ad5934_sample_BL.bytes[1] = tempByte; //tempByte = ad5934_sample_BL.bytes[2]; //ad5934_sample_BL.bytes[2] = ad5934_sample_BL.bytes[3]; //ad5934_sample_BL.bytes[3] = tempByte; //ad5934_sample_IL.number = ad5934_sample_BL.number; // ad5934_sample_IL.number = AD5934_Sweep(); // intToStr((ad5934_sample_IL.ints[0]), real_text); // status0 = rs485_send_broadcast(real_text, strlen((char*)real_text)); // status1 = rs485_send_broadcast(newline_real, strlen((char*)newline_real)); // intToStr((ad5934_sample_IL.ints[1]), imag_text); //status0 = rs485_send_broadcast(imag_text, strlen((char*)imag_text)); //status1 = rs485_send_broadcast(newline_imag, strlen((char*)newline_imag)); //AD5934_GetImpedance(CH_EC); //FloatToString(tempString, ad5934_impedances_average[0]); //status0 = rs485_send_broadcast(tempString, strlen((char*)tempString)); //status1 = rs485_send_broadcast(newline_imag, strlen((char*)newline_imag)); //impedance_EC = AD5934_CalculateImpedance(); //FloatToString(tempString, impedance_EC); //status0 = rs485_send_broadcast(tempString, strlen((char*)tempString)); //status1 = rs485_send_broadcast(newline_imag, strlen((char*)newline_imag)); // Read ADC value int16_t adc_value = 2048 - ADSreadADC_Differential_0_1(&i2c); intToStr(adc_value, adc_text); // status0 = rs485_send_broadcast(adc_text, strlen((char*)adc_text)); status1 = rs485_send_broadcast(newline_ph, strlen((char*)newline_ph)); status1 = rs485_send_broadcast(newline, strlen((char*)newline)); }*/ // Read ADC value // int16_t adc_value = 2048 - ADSreadADC_Differential_0_1(&i2c); // intToStr(adc_value, adc_text); // // status0 = rs485_send_broadcast(adc_text, strlen((char*)adc_text)); // status1 = rs485_send_broadcast(newline_ph, strlen((char*)newline_ph)); // status1 = rs485_send_broadcast(newline, strlen((char*)newline)); } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL2; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK) { Error_Handler(); } PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC; PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV8; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); } } /* USER CODE BEGIN 4 */ /***************************************************************************//** * @brief Converts a float value to a character array with 3 digits of accuracy. * * @param *buf - returns the converterd value * @param val - value to be converted * * @return None. *******************************************************************************/ void FloatToString(char * buf, double val) { long intPart = 0; short fracPart = 0; short charPos = 0; char localBuf[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; short i = sizeof(localBuf) - 1; intPart = (long)val; fracPart = (short)((val - intPart) * 1000 + 0.5); while(i > sizeof(localBuf) - 4) { localBuf[i] = (fracPart % 10) + 0x30; fracPart /= 10; i--; } localBuf[i] = '.'; if(intPart == 0) { i --; localBuf[i] = '0'; } while(intPart) { i --; localBuf[i] =(intPart % 10) + 0x30; intPart /= 10; } for(charPos = i; charPos < sizeof(localBuf); charPos ++) { *buf = localBuf[charPos]; buf ++; } *buf = 0; } void intToStr(int N, char *str) { int i = 0; // Save the copy of the number for sign int sign = N; // If the number is negative, make it positive if (N < 0) N = -N; // Extract digits from the number and add them to the // string while (N > 0) { // Convert integer digit to character and store // it in the str str[i++] = N % 10 + '0'; N /= 10; } // If the number was negative, add a minus sign to the // string if (sign < 0) { str[i++] = '-'; } // Null-terminate the string str[i] = '\0'; // Reverse the string to get the correct order for (int j = 0, k = i - 1; j < k; j++, k--) { char temp = str[j]; str[j] = str[k]; str[k] = temp; } } /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ /* User can add his own implementation to report the HAL error return state */ __disable_irq(); while (1) { } /* USER CODE END Error_Handler_Debug */ } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t *file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */