1首先用STM32CUBEMX配置
如下图：
2重点修改user_diskio.c
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205/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file user_diskio.c * @brief This file includes a diskio driver skeleton to be completed by the user. ****************************************************************************** * @attention * * Copyright (c) 2022 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 */ #ifdef USE_OBSOLETE_USER_CODE_SECTION_0 /* * Warning: the user section 0 is no more in use (starting from CubeMx version 4.16.0) * To be suppressed in the future. * Kept to ensure backward compatibility with previous CubeMx versions when * migrating projects. * User code previously added there should be copied in the new user sections before * the section contents can be deleted. */ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ #endif /* USER CODE BEGIN DECL */ /* Includes ------------------------------------------------------------------*/ #include <string.h> #include "ff_gen_drv.h" /* Private typedef -----------------------------------------------------------*/ #include "w25qxx.h" #define FLASH_SECTOR_SIZE 4096 //每个扇区4K #define FLASH_SECTOR_COUNT 256*16 //W25Q128有256block,每个block16扇区 #define FLASH_BLOCK_SIZE 65536 //16*4096 /* Private define ------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Disk status */ static volatile DSTATUS Stat = STA_NOINIT; /* USER CODE END DECL */ /* Private function prototypes -----------------------------------------------*/ DSTATUS USER_initialize (BYTE pdrv); DSTATUS USER_status (BYTE pdrv); DRESULT USER_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count); #if _USE_WRITE == 1 DRESULT USER_write (BYTE pdrv, const BYTE *buff, DWORD sector, UINT count); #endif /* _USE_WRITE == 1 */ #if _USE_IOCTL == 1 DRESULT USER_ioctl (BYTE pdrv, BYTE cmd, void *buff); #endif /* _USE_IOCTL == 1 */ Diskio_drvTypeDef USER_Driver = { USER_initialize, USER_status, USER_read, #if _USE_WRITE USER_write, #endif /* _USE_WRITE == 1 */ #if _USE_IOCTL == 1 USER_ioctl, #endif /* _USE_IOCTL == 1 */ }; /* Private functions ---------------------------------------------------------*/ /** * @brief Initializes a Drive * @param pdrv: Physical drive number (0..) * @retval DSTATUS: Operation status */ DSTATUS USER_initialize ( BYTE pdrv /* Physical drive nmuber to identify the drive */ ) { /* USER CODE BEGIN INIT */ Stat = STA_NOINIT; return RES_OK; /* USER CODE END INIT */ } /** * @brief Gets Disk Status * @param pdrv: Physical drive number (0..) * @retval DSTATUS: Operation status */ DSTATUS USER_status ( BYTE pdrv /* Physical drive number to identify the drive */ ) { /* USER CODE BEGIN STATUS */ Stat = STA_NOINIT; return RES_OK; /* USER CODE END STATUS */ } /** * @brief Reads Sector(s) * @param pdrv: Physical drive number (0..) * @param *buff: Data buffer to store read data * @param sector: Sector address (LBA) * @param count: Number of sectors to read (1..128) * @retval DRESULT: Operation result */ DRESULT USER_read ( BYTE pdrv, /* Physical drive nmuber to identify the drive */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Sector address in LBA */ UINT count /* Number of sectors to read */ ) { /* USER CODE BEGIN READ */ for(;count>0;count--){ W25QXX_Read(buff,sector*FLASH_SECTOR_SIZE,FLASH_SECTOR_SIZE); sector++; buff+=FLASH_SECTOR_SIZE; } return RES_OK; /* USER CODE END READ */ } /** * @brief Writes Sector(s) * @param pdrv: Physical drive number (0..) * @param *buff: Data to be written * @param sector: Sector address (LBA) * @param count: Number of sectors to write (1..128) * @retval DRESULT: Operation result */ #if _USE_WRITE == 1 DRESULT USER_write ( BYTE pdrv, /* Physical drive nmuber to identify the drive */ const BYTE *buff, /* Data to be written */ DWORD sector, /* Sector address in LBA */ UINT count /* Number of sectors to write */ ) { /* USER CODE BEGIN WRITE */ /* USER CODE HERE */ for(;count>0;count--){ W25QXX_Write((uint8_t *)buff,sector*FLASH_SECTOR_SIZE,FLASH_SECTOR_SIZE); sector++; buff+=FLASH_SECTOR_SIZE; } return RES_OK; /* USER CODE END WRITE */ } #endif /* _USE_WRITE == 1 */ /** * @brief I/O control operation * @param pdrv: Physical drive number (0..) * @param cmd: Control code * @param *buff: Buffer to send/receive control data * @retval DRESULT: Operation result */ #if _USE_IOCTL == 1 DRESULT USER_ioctl ( BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE cmd, /* Control code */ void *buff /* Buffer to send/receive control data */ ) { /* USER CODE BEGIN IOCTL */ DRESULT res = RES_ERROR; switch(cmd){ case CTRL_SYNC: res = RES_OK; break; case GET_SECTOR_SIZE: *(WORD*)buff = FLASH_SECTOR_SIZE; res = RES_OK; break; case GET_BLOCK_SIZE: *(WORD*)buff = (WORD)FLASH_BLOCK_SIZE; res = RES_OK; break; case GET_SECTOR_COUNT: *(DWORD*)buff = FLASH_SECTOR_COUNT; res = RES_OK; break; default: res = RES_PARERR; break; } return res; /* USER CODE END IOCTL */ } #endif /* _USE_IOCTL == 1 */
3在main函数添加代码并测试
复制代码
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97BYTE work[4096]; BYTE WriteBuffer[]= "hello world123"; BYTE ReadBuffer[1024] = {0}; void FATFS_MOUNT(void){ printf("FATFS START"); retUSER = f_mount(&USERFatFS, USERPath, 1); if(retUSER ==FR_NO_FILESYSTEM) { printf("fmkfs"); /* 格式化 */ retUSER = f_mkfs(USERPath, 1, 0, work, sizeof(work)); if(retUSER == FR_OK) { printf("fmkfs success"); /* 格式化后，先取消挂载 */ retUSER = f_mount(NULL, USERPath, 1); /* 重新挂载 */ retUSER = f_mount(&USERFatFS,USERPath, 1); } else { printf("fmkfs error"); while(1); } } else if(retUSER != FR_OK) { printf("mount error"); while(1); } else { printf("mount succes"); } } void FATFS_WRITE_TEST(void){ retUSER = f_open(&USERFile, "1:/data.txt", FA_OPEN_ALWAYS | FA_WRITE); if(retUSER){ printf("open error"); while(1); } else printf("open success"); retUSER = f_write(&USERFile, WriteBuffer, sizeof(WriteBuffer), &fnum); if(retUSER){ printf("write error"); while(1); } else printf("write success"); retUSER = f_close(&USERFile); //读 void FAFTF_READ_FILE_TEST(void){ retUSER = f_open(&USERFile, "1:/data.txt", FA_READ); if(retUSER){ printf("open error"); while(1); } else printf("open success"); retUSER = f_read(&USERFile, ReadBuffer, 100, &fnum); if(retUSER){ printf("read error"); while(1); } else printf("read success"); retUSER = f_close(&USERFile); } int main(void) { MX_SPI1_Init(); W25QXX_Init(); MX_FATFS_Init(); FATFS_MOUNT(); HAL_Delay(1000); FATFS_WRITE_TEST(); HAL_Delay(1000); FAFTF_READ_FILE_TEST(); f_mount(NULL, USERPath, 1); while(1); }
用LCD显示过程。
经过测试能用，但是不推荐用FATFS管理spi flash。
因为使用FATFS管理上没有擦写均衡功能。spi flash寿命有限。
推荐使用LittleFS文件管理系统。
FATFS的优势在于能用电脑查看，适用于TF卡等能插在电脑上看的存储器。
最后
以上就是傲娇小霸王最近收集整理的关于FATFS文件系统管理W25Q128的全部内容，更多相关FATFS文件系统管理W25Q128内容请搜索靠谱客的其他文章。
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