/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 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" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "hd44780.h" #include "LPS22.h" #include "HTS221.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 ---------------------------------------------------------*/ I2C_HandleTypeDef hi2c2; UART_HandleTypeDef huart1; /* USER CODE BEGIN PV */ uint8_t rxByte; char displayMode = ' '; // para los comandos int useFahrenheit = 0; // 0 -> ºC, 1 -> ºF float maxTemp = -100.0, minTemp = 100.0; float maxHum = 0.0, minHum = 100.0; float maxPress = 0.0, minPress = 2000.0; /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_I2C2_Init(void); static void MX_USART1_UART_Init(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ void __io_putchar(int ch) { uint8_t c[1]; c[0] = ch & 0x00ff; HAL_UART_Transmit(&huart1, &*c, 1, 10); return ch; } void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { switch (rxByte) { case 'm': case 'n': displayMode = rxByte; break; case 'c': maxTemp = -100.0; minTemp = 100.0; maxHum = 0.0; minHum = 100.0; maxPress = 0.0; minPress = 2000.0; displayMode = ' '; break; case 'u': useFahrenheit = !useFahrenheit; break; default: displayMode = ' '; break; } HAL_UART_Receive_IT(&huart1, &rxByte, 1); } /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* 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_I2C2_Init(); MX_USART1_UART_Init(); /* USER CODE BEGIN 2 */ // LCD44780 INIT lcd_reset(); lcd_display_settings(1,0,0); lcd_clear(); // LPS22 INIT LPS22_Init(); // HTS221 INIT HTS221_Init(); // USART INTERRUPTIONS HAL_UART_Receive_IT(&huart1, &rxByte, 1); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { uint8_t str[20]; float pressure = LPS22_ReadPress(); THSample ths = HTS221_Read(); if (ths.temp > maxTemp) maxTemp = ths.temp; if (ths.temp < minTemp) minTemp = ths.temp; if (ths.hum > maxHum) maxHum = ths.hum; if (ths.hum < minHum) minHum = ths.hum; if (pressure > maxPress) maxPress = pressure; if (pressure < minPress) minPress = pressure; float tempToShow = useFahrenheit ? (ths.temp * 9.0 / 5.0) + 32 : ths.temp; // convertir a ºF si es necesario float pressureToShow = useFahrenheit ? pressure * 0.75006 : pressure; // convertir a mmHg si es necesario char tempUnit = useFahrenheit ? 'F' : 'C'; const char *pressUnit = useFahrenheit ? "mmHg" : "hPa"; switch (displayMode) { case 'm': sprintf(str, "Max: %.1f%c %.1f%%", maxTemp, tempUnit, maxHum); moveToXY(0, 0); lcd_print(str); printf("%s\n\r", str); // Enviar a consola UART sprintf(str, "Pres: %.1f%s", maxPress, pressUnit); moveToXY(1, 1); lcd_print(str); printf("%s\n\r", str); // Enviar a consola UART break; case 'n': sprintf(str, "Min: %.1f%c %.1f%%", minTemp, tempUnit, minHum); moveToXY(0, 0); lcd_print(str); printf("%s\n\r", str); // Enviar a consola UART sprintf(str, "Pres: %.1f%s", minPress, pressUnit); moveToXY(1, 1); lcd_print(str); printf("%s\n\r", str); // Enviar a consola UART break; default: sprintf(str, "T:%.1f%c H:%.1f%%", tempToShow, tempUnit, ths.hum); moveToXY(0, 0); lcd_print(str); printf("%s\n\r", str); // Enviar a consola UART sprintf(str, "Pres: %.1f%s", pressureToShow, pressUnit); moveToXY(1, 1); lcd_print(str); printf("%s\n\r", str); // Enviar a consola UART break; } HAL_Delay(500); /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** Configure the main internal regulator output voltage */ if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK) { Error_Handler(); } /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI; RCC_OscInitStruct.MSIState = RCC_MSI_ON; RCC_OscInitStruct.MSICalibrationValue = 0; RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; RCC_OscInitStruct.PLL.PLLM = 1; RCC_OscInitStruct.PLL.PLLN = 40; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7; RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; 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_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK) { Error_Handler(); } } /** * @brief I2C2 Initialization Function * @param None * @retval None */ static void MX_I2C2_Init(void) { /* USER CODE BEGIN I2C2_Init 0 */ /* USER CODE END I2C2_Init 0 */ /* USER CODE BEGIN I2C2_Init 1 */ /* USER CODE END I2C2_Init 1 */ hi2c2.Instance = I2C2; hi2c2.Init.Timing = 0x10D19CE4; hi2c2.Init.OwnAddress1 = 0; hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE; hi2c2.Init.OwnAddress2 = 0; hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK; hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE; hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE; if (HAL_I2C_Init(&hi2c2) != HAL_OK) { Error_Handler(); } /** Configure Analogue filter */ if (HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE) != HAL_OK) { Error_Handler(); } /** Configure Digital filter */ if (HAL_I2CEx_ConfigDigitalFilter(&hi2c2, 0) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN I2C2_Init 2 */ /* USER CODE END I2C2_Init 2 */ } /** * @brief USART1 Initialization Function * @param None * @retval None */ static void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ /* USER CODE END USART1_Init 1 */ huart1.Instance = USART1; huart1.Init.BaudRate = 115200; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART1_Init 2 */ /* USER CODE END USART1_Init 2 */ } /** * @brief GPIO Initialization Function * @param None * @retval None */ static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* USER CODE BEGIN MX_GPIO_Init_1 */ /* USER CODE END MX_GPIO_Init_1 */ /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOA, Led_LCD_Pin|D4_LCD_Pin|D7_LCD_Pin|E_LCD_Pin, GPIO_PIN_RESET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOB, D6_LCD_Pin|RS_LCD_Pin|D5_LCD_Pin, GPIO_PIN_RESET); /*Configure GPIO pins : Led_LCD_Pin D4_LCD_Pin D7_LCD_Pin E_LCD_Pin */ GPIO_InitStruct.Pin = Led_LCD_Pin|D4_LCD_Pin|D7_LCD_Pin|E_LCD_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /*Configure GPIO pins : D6_LCD_Pin RS_LCD_Pin D5_LCD_Pin */ GPIO_InitStruct.Pin = D6_LCD_Pin|RS_LCD_Pin|D5_LCD_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* USER CODE BEGIN MX_GPIO_Init_2 */ /* USER CODE END MX_GPIO_Init_2 */ } /* USER CODE BEGIN 4 */ /* 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 */