stm32cubemx设计图如下：
接线如下：
main.c代码如下：
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2024 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 "fatfs.h"
#include "spi.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "string.h"
//SPI_HandleTypeDef hspi1;
FATFS fs;
FATFS *pfs;
FIL fil;
FRESULT fres;
DWORD fre_clust;
DIR dir;
static FILINFO fno;
uint32_t total, freez;
char buffer[100];
/* 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 */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* 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 */
/* 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_SPI1_Init();
MX_FATFS_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
/* Mount SD Card */
if(f_mount(&fs, "", 0) != FR_OK)
printf("挂载失败 \r\n");
/* Open file to write */
if(f_open(&fil, "test1.txt", FA_OPEN_ALWAYS | FA_READ | FA_WRITE) != FR_OK)
printf("打开文件失败 \r\n");
/* Check free space */
if(f_getfree("", &fre_clust, &pfs) != FR_OK)
printf("计算空间失败 \r\n");
total = (uint32_t)((pfs->n_fatent - 2) * pfs->csize * 0.5);
freez = (uint32_t)(fre_clust * pfs->csize * 0.5);
/* Free space is less than 1kb */
if(freez < 1)
printf("SD满了 \r\n");
/* Writing text */
f_puts("hello world \n", &fil);
f_puts("SD卡获取根目录文件成功!!!", &fil);
/* Close file */
if(f_close(&fil) != FR_OK)
printf("关闭文件失败 \r\n");
/* Open file to read */
if(f_open(&fil, "test1.txt", FA_READ) != FR_OK)
printf("打开文件失败 \r\n");
while(f_gets(buffer, sizeof(buffer), &fil))
{
printf("%s \r\n", buffer);
}
/* Close file */
if(f_close(&fil) != FR_OK)
printf("关闭文件失败 \r\n");
/* Get tree list */
FRESULT res;
if(f_opendir(&dir,"") != FR_OK){
printf("打开根目录失败 \r\n");
}else{
printf("打开根目录成功 \r\n");
for(;;){
res = f_readdir(&dir, &fno); //读取目录，返回状态 和 文件信息的指针
if(res != FR_OK || fno.fname[0] == 0)
break; //若打开失败 或 到结尾，则退出
if(fno.fattrib & AM_DIR) //是目录
{
printf("是目录%s \r\n",fno.fname);
if(res != FR_OK) break; //打开失败则退出
}else
{
printf("是文件:%s \r\n",fno.fname); //是文件
}
}
}
/* Unmount SDCARD */
if(f_mount(NULL, "", 1) != FR_OK)
printf("解除挂载文件失败 \r\n");
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
printf("test123123 \r\n");
HAL_Delay(2000);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** 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_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
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_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/* 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 */
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版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
原文链接：https://blog.csdn.net/kukunet/article/details/135921672
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