stm32f103c8t6用spi协议操作sd卡并给电脑串口发送消息_c8t6+spi sd+fatfs

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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