STM32F745IET7 串口使用printf打印卡死，无法运行到main

1：STM32F745IET7 串口使用printf打印卡死，无法运行到main

/* USER CODE BEGIN Header */
/**
? ******************************************************************************
? * @file ? ? ? ? ? : main.c
? * @brief ? ? ? ? ?: Main program body
? ******************************************************************************
? * @attention
? *
? * Copyright (c) 2023 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 "stdio.h"
//#include "usart.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* 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 ---------------------------------------------------------*/

UART_HandleTypeDef huart1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);

static void CPU_CACHE_Enable(void);
static void MPU_Initialize(void);
static void MPU_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h> ? ?//????????
/* USER CODE END Includes */
?

/* USER CODE BEGIN PFP */

/* 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 */

? /* USER CODE END 1 */
?? ?
?? ? ?/* Enable the CPU Cache */
? CPU_CACHE_Enable();

? /* MCU Configuration--------------------------------------------------------*/

? /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
? HAL_Init();

? /* MPU Configuration--------------------------------------------------------*/
? MPU_Config();

? /* 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_USART1_UART_Init();
?? ?
?? ?
?? ?
? /* Output a message on Hyperterminal using printf function */
? printf("\n\r UART Printf Example: retarget the C library printf function to the UART\n\r");
? printf("** Test finished successfully. ** \n\r");?? ?
?? ?
?? ?
?? ?
?? ?//unsigned char p[]="test";
?? ?
?? ?
?? ?
? /* USER CODE BEGIN 2 */

? /* USER CODE END 2 */

? /* Infinite loop */
? /* USER CODE BEGIN WHILE */
? while (1)
? {
? ? /* USER CODE END WHILE */
?? ??? ?
? ? HAL_GPIO_TogglePin(GPIOG, GPIO_PIN_11);
? ? /* Insert delay 100 ms */
? ? HAL_Delay(300);?? ??? ??? ?
?? ??? ?
?? ??? ?//HAL_UART_Transmit(&huart1,p,sizeof(p),1000 );
?? ??? ?printf("** Test finished successfully. ** \n\r");
?? ??? ?
?? ??? ?

? ? /* 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
? */
? __HAL_RCC_PWR_CLK_ENABLE();
? __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

? /** Initializes the RCC Oscillators according to the specified parameters
? * in the RCC_OscInitTypeDef structure.
? */
? RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
? RCC_OscInitStruct.HSIState = RCC_HSI_ON;
? RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
? RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
? 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_HSI;
? 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_0) != HAL_OK)
? {
? ? Error_Handler();
? }
}

/**
? * @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_GPIOG_CLK_ENABLE();

? /*Configure GPIO pin Output Level */
? HAL_GPIO_WritePin(GPIOG, GPIO_PIN_11|GPIO_PIN_12, GPIO_PIN_RESET);

? /*Configure GPIO pins : PG11 PG12 */
? GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
? GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
? GPIO_InitStruct.Pull = GPIO_NOPULL;
? GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
? HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/* MPU Configuration */

void MPU_Config(void)
{
? MPU_Region_InitTypeDef MPU_InitStruct = {0};

? /* Disables the MPU */
? HAL_MPU_Disable();

? /** Initializes and configures the Region and the memory to be protected
? */
? MPU_InitStruct.Enable = MPU_REGION_ENABLE;
? MPU_InitStruct.Number = MPU_REGION_NUMBER0;
? MPU_InitStruct.BaseAddress = 0x0;
? MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
? MPU_InitStruct.SubRegionDisable = 0x87;
? MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
? MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
? MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
? MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
? MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
? MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;

? HAL_MPU_ConfigRegion(&MPU_InitStruct);
? /* Enables the MPU */
? HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);

}

/**
? * @brief ?CPU L1-Cache enable.
? * @param ?None
? * @retval None
? */
static void CPU_CACHE_Enable(void)
{
? /* Enable I-Cache */
? SCB_EnableICache();

? /* Enable D-Cache */
? SCB_EnableDCache();
}

/**
? * @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 */
2：设置

main文件添加：

#include <stdio.h> ?
/* USER CODE END Includes */
?
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
int fputc(int c, FILE *stream) ? ?//??fputc??
{

? ? HAL_UART_Transmit(&huart1, (unsigned char *)&c, 1, 1000); ??
? ? return 1;
}

3：重新编译调试正常