Untitled
unknown
plain_text
5 months ago
4.4 kB
12
Indexable
#include "main.h" #include <string.h> // For using strcpy and strlen // UART handle UART_HandleTypeDef huart2; // Function prototypes void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_USART2_UART_Init(void); int main(void) { // Initialize HAL library HAL_Init(); SystemClock_Config(); // Initialize GPIOs and UART MX_GPIO_Init(); MX_USART2_UART_Init(); char uart_message[50]; // Buffer for UART messages // Infinite loop while (1) { // Check if button is pressed (active-low) if (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_RESET) { // Turn on LED HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET); // Send debugging message over UART strcpy(uart_message, "LED ON\r\n"); HAL_UART_Transmit(&huart2, (uint8_t *)uart_message, strlen(uart_message), HAL_MAX_DELAY); HAL_Delay(500); // 500 ms delay // Turn off LED HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET); // Send debugging message over UART strcpy(uart_message, "LED OFF\r\n"); HAL_UART_Transmit(&huart2, (uint8_t *)uart_message, strlen(uart_message), HAL_MAX_DELAY); HAL_Delay(500); // 500 ms delay } } } /** * @brief GPIO Initialization Function */ static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; // Enable GPIO Ports Clock __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); // Configure GPIOA Pin 5 as Output (LED) GPIO_InitStruct.Pin = GPIO_PIN_5; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; // Push-pull mode GPIO_InitStruct.Pull = GPIO_NOPULL; // No pull-up or pull-down GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // Configure GPIOC Pin 13 as Input (Button) GPIO_InitStruct.Pin = GPIO_PIN_13; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; // No pull-up or pull-down HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); } /** * @brief UART2 Initialization Function */ static void MX_USART2_UART_Init(void) { huart2.Instance = USART2; huart2.Init.BaudRate = 115200; // Set baud rate huart2.Init.WordLength = UART_WORDLENGTH_8B; // 8-bit word length huart2.Init.StopBits = UART_STOPBITS_1; // 1 stop bit huart2.Init.Parity = UART_PARITY_NONE; // No parity huart2.Init.Mode = UART_MODE_TX_RX; // Enable TX and RX huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE; // No hardware flow control huart2.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart2) != HAL_OK) { Error_Handler(); } } /** * @brief System Clock Configuration */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** Configure the main internal regulator output voltage */ __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2); /** Initializes the RCC Oscillators */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLM = 16; RCC_OscInitStruct.PLL.PLLN = 336; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; RCC_OscInitStruct.PLL.PLLQ = 7; 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_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } } /** * @brief Error Handler Function */ void Error_Handler(void) { while (1) { // Stay here for debugging } }
Editor is loading...
Leave a Comment