8 changed files with 348 additions and 84 deletions
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4.vscode/c_cpp_properties.json
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5.vscode/settings.json
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9USB_HOST/App/usb_host.c
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2USB_HOST/Target/usbh_platform.c
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6hand_acid_mainboard.ioc
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288usrc/fileoperation/file_operate.c
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27usrc/fileoperation/file_operate.h
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91usrc/service/app_core.cpp
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#include "file_operate.h" |
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//定义用于格式化的工作区缓存 |
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BYTE workBuffer[4*User_Sector]; |
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/*挂载FatFs文件系统*/ |
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void Mount_FatFs(void) |
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{ |
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//挂载文件系统 |
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FRESULT retUSER = f_mount(&User_FatFs, User_SDPath, 1); |
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//发生错误 |
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if(retUSER != FR_OK) |
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{ |
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//没有文件系统,需要格式化 |
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if(retUSER == FR_NO_FILESYSTEM) |
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{ |
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printf("\r\n没有文件系统,开始格式化\r\n"); |
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//创建文件系统 |
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retUSER = f_mkfs(User_SDPath, FM_FAT32, 0, workBuffer, 4*User_Sector); |
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//格式化失败 |
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if(retUSER != FR_OK) |
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{ |
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printf("格式化失败,错误代码 = %d\r\n", retUSER); |
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} |
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//格式化成功 |
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else |
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{ |
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printf("格式化成功,开始重新挂载\r\n"); |
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//有文件系统后重新挂载 |
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retUSER = f_mount(&User_FatFs, User_SDPath, 1); |
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//挂载失败 |
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if(retUSER != FR_OK) |
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{ |
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printf("发生错误,错误代码 = %d\r\n", retUSER); |
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} |
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//挂载成功 |
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else |
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{ |
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printf("*** 文件系统挂载成功 ***\r\n"); |
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} |
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} |
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} |
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//不是没有文件系统,而是发生其他错误 |
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else |
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{ |
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printf("发生其他错误,错误代码 = %d\r\n", retUSER); |
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} |
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} |
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//有文件系统直接挂在成功 |
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else |
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{ |
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printf("文件系统挂载成功\r\n"); |
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} |
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} |
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/*获取磁盘信息并在LCD上显示*/ |
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void FatFs_GetDiskInfo(void) |
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{ |
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FATFS *fs; |
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//定义剩余簇个数变量 |
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DWORD fre_clust; |
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//获取剩余簇个数 |
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FRESULT res = f_getfree("0:", &fre_clust, &fs); |
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//获取失败 |
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if(res != FR_OK) |
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{ |
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printf("f_getfree() error\r\n"); |
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return; |
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} |
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printf("\r\n*** FAT disk info ***\r\n"); |
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//总的扇区个数 |
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DWORD tot_sect = (fs->n_fatent - 2) * fs->csize; |
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//剩余的扇区个数 = 剩余簇个数 * 每个簇的扇区个数 |
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DWORD fre_sect = fre_clust * fs->csize; |
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//对于SD卡和U盘, _MIN_SS=512字节 |
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#if _MAX_SS == _MIN_SS |
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//SD卡的_MIN_SS固定为512,右移11位相当于除以2048 |
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//剩余空间大小,单位:MB,用于SD卡,U盘 |
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DWORD freespace= (fre_sect>>11); |
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//总空间大小,单位:MB,用于SD卡,U盘 |
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DWORD totalSpace= (tot_sect>>11); |
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#else |
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//Flash存储器,小容量 |
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//剩余空间大小,单位:KB |
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DWORD freespace= (fre_sect*fs->ssize)>>10; |
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//总空间大小,单位:KB |
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DWORD totalSpace= (tot_sect*fs->ssize)>>10; |
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#endif |
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//FAT类型 |
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printf("FAT type = %d\r\n",fs->fs_type); |
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printf("[1=FAT12,2=FAT16,3=FAT32,4=exFAT]\r\n"); |
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//扇区大小,单位字节 |
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printf("Sector size(bytes) = "); |
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//SD卡固定512字节 |
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#if _MAX_SS == _MIN_SS |
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printf("%d\r\n", _MIN_SS); |
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#else |
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//FLASH存储器 |
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printf("%d\r\n", fs->ssize); |
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#endif |
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printf("Cluster size(sectors) = %d\r\n", fs->csize); |
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printf("Total cluster count = %ld\r\n", fs->n_fatent-2); |
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printf("Total sector count = %ld\r\n", tot_sect); |
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//总空间 |
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#if _MAX_SS == _MIN_SS |
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printf("Total space(MB) = %ld\r\n", totalSpace); |
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#else |
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printf("Total space(KB) = %ld\r\n", totalSpace); |
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#endif |
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//空闲簇数量 |
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printf("Free cluster count = %ld\r\n",fre_clust); |
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//空闲扇区数量 |
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printf("Free sector count = %ld\r\n", fre_sect); |
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//空闲空间 |
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#if _MAX_SS == _MIN_SS |
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printf("Free space(MB) = %ld\r\n", freespace); |
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#else |
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printf("Free space(KB) = %ld\r\n", freespace); |
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#endif |
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printf("Get FAT disk info OK\r\n"); |
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} |
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/*创建文本文件*/ |
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void FatFs_WriteTXTFile(TCHAR *filename,uint16_t year, uint8_t month, uint8_t day) |
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{ |
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FIL file; |
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printf("\r\n*** Creating TXT file: %s ***\r\n", filename); |
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FRESULT res = f_open(&file, filename, FA_CREATE_ALWAYS | FA_WRITE); |
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//打开/创建文件成功 |
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if(res == FR_OK) |
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{ |
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//字符串必须有换行符"\n" |
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TCHAR str[]="Line1: Hello, FatFs***\n"; |
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//不会写入结束符"\0" |
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f_puts(str, &file); |
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printf("Write file OK: %s\r\n", filename); |
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} |
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else |
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{ |
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printf("Open file error,error code: %d\r\n", res); |
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} |
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//使用完毕关闭文件 |
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f_close(&file); |
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} |
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/*读取一个文本文件的内容*/ |
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void FatFs_ReadTXTFile(TCHAR *filename) |
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{ |
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printf("\r\n*** Reading TXT file: %s ***\r\n", filename); |
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FIL file; |
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//以只读方式打开文件 |
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FRESULT res = f_open(&file, filename, FA_READ); |
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//打开成功 |
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if(res == FR_OK) |
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{ |
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//读取缓存 |
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TCHAR str[100]; |
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//没有读到文件内容末尾 |
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while(!f_eof(&file)) |
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{ |
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//读取1个字符串,自动加上结束符”\0” |
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f_gets(str,100, &file); |
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printf("%s", str); |
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} |
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printf("\r\n"); |
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} |
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//如果没有该文件 |
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else if(res == FR_NO_FILE) |
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printf("File does not exist\r\n"); |
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//打开失败 |
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else |
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printf("f_open() error,error code: %d\r\n", res); |
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//关闭文件 |
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f_close(&file); |
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} |
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/*扫描和显示指定目录下的文件和目录*/ |
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void FatFs_ScanDir(const TCHAR* PathName) |
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{ |
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DIR dir; //目录对象 |
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FILINFO fno; //文件信息 |
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//打开目录 |
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FRESULT res = f_opendir(&dir, PathName); |
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//打开失败 |
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if(res != FR_OK) |
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{ |
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//关闭目录,直接退出函数 |
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f_closedir(&dir); |
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printf("\r\nf_opendir() error,error code: %d\r\n", res); |
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return; |
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} |
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printf("\r\n*** All entries in dir: %s ***\r\n", PathName); |
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//顺序读取目录中的文件 |
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while(1) |
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{ |
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//读取目录下的一个项 |
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res = f_readdir(&dir, &fno); |
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//文件名为空表示没有多的项可读了 |
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if(res != FR_OK || fno.fname[0] == 0) |
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break; |
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//如果是一个目录 |
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if(fno.fattrib & AM_DIR) |
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{ |
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printf("DIR: %s\r\n", fno.fname); |
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} |
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//如果是一个文件 |
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else |
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{ |
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printf("FILE: %s\r\n",fno.fname); |
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} |
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} |
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//扫描完毕,关闭目录 |
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printf("Scan dir OK\r\n"); |
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f_closedir(&dir); |
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} |
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/*获取一个文件的文件信息*/ |
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void FatFs_GetFileInfo(TCHAR *filename) |
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{ |
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printf("\r\n*** File info of: %s ***\r\n", filename); |
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FILINFO fno; |
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//检查文件或子目录是否存在 |
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FRESULT fr = f_stat(filename, &fno); |
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//如果存在从fno中读取文件信息 |
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if(fr == FR_OK) |
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{ |
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printf("File size(bytes) = %ld\r\n", fno.fsize); |
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printf("File attribute = 0x%x\r\n", fno.fattrib); |
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printf("File Name = %s\r\n", fno.fname); |
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//输出创建/修改文件时的时间戳 |
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FatFs_PrintfFileDate(fno.fdate, fno.ftime); |
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} |
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//如果没有该文件 |
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else if (fr == FR_NO_FILE) |
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printf("File does not exist\r\n"); |
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//发生其他错误 |
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else |
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printf("f_stat() error,error code: %d\r\n", fr); |
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} |
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/*删除文件*/ |
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void FatFs_DeleteFile(TCHAR *filename) |
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{ |
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printf("\r\n*** Delete File: %s ***\r\n", filename); |
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FIL file; |
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//打开文件 |
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FRESULT res = f_open(&file, filename, FA_OPEN_EXISTING); |
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if(res == FR_OK) |
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{ |
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//关闭文件 |
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f_close(&file); |
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printf("open successfully!\r\n"); |
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} |
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//删除文件 |
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res = f_unlink(filename); |
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//删除成功 |
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if(res == FR_OK) |
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{ |
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printf("The file was deleted successfully!\r\n"); |
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} |
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//删除失败 |
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else |
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{ |
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printf("File deletion failed, error code:%d\r\n", res); |
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} |
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} |
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/*打印输出文件日期*/ |
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void FatFs_PrintfFileDate(WORD date, WORD time) |
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{ |
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printf("File data = %d/%d/%d\r\n", ((date>>9)&0x7F)+1980, (date>>5)&0xF, date&0x1F); |
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printf("File time = %d:%d:%d\r\n", (time>>11)&0x1F, (time>>5)&0x3F, time&0x1F); |
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} |
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@ -0,0 +1,27 @@ |
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#ifndef FILE_OPERATE_H |
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#define FILE_OPERATE_H |
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#include "main.h" |
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#include "FatFs.h" |
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#include "stdio.h" |
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/*定义自己的存储设备*/ |
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/*用户存储设备扇区字节数*/ |
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#define User_Sector 512 |
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/*用户存储设备FatFs对象*/ |
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#define User_FatFs USBHFatFS |
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/*用户存储设备卷路径*/ |
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#define User_SDPath USBHPath |
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/*用户存储设备初始化类型*/ |
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#define User_FatType FM_FAT32 |
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/*函数声明*/ |
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void Mount_FatFs(void); |
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void FatFs_GetDiskInfo(void); |
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void FatFs_ScanDir(const TCHAR* PathName); |
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void FatFs_ReadTXTFile(TCHAR *filename); |
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void FatFs_WriteTXTFile(TCHAR *filename,uint16_t year, uint8_t month, uint8_t day); |
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void FatFs_GetFileInfo(TCHAR *filename); |
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void FatFs_DeleteFile(TCHAR *filename); |
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void FatFs_PrintfFileDate(WORD date, WORD time); |
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#endif |
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