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res=f_mount(&USBDISKFatFs, (TCHAR const*)"0:", 0) ;
printf("res=%d\r\n",res);
res=f_open(&MyFile, "0:stm32.txt", FA_CREATE_ALWAYS | FA_CREATE_ALWAYS);
printf("res=%d\r\n",res);
res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten);
printf("res=%d\r\n",res);
f_close(&MyFile);
这是我的文件操作顺序,当我的U盘插上去的时候,3次返回的值分别是,0,13,9,13代表无此FAT卷,不知道什么原因,谁遇到过这种情况 |
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