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楼主 |
发表于 2014-6-4 21:30:51
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函数实例：
和以前的版本不同，这里要注意调用方法：
/* 挂载文件系统 */
result = f_mount(&fs, "1:/", 0); /* Mount a logical drive */
/* 卸载文件系统 */
result = f_mount(NULL, "1:/", 0);
通过下面这个函数可以更加方便的测试：
static const char * FR_Table[]=
{
"FR_OK：成功", /* (0) Succeeded */
"FR_DISK_ERR：底层硬件错误", /* (1) A hard error occurred in the low level disk I/O layer */
"FR_INT_ERR：断言失败", /* (2) Assertion failed */
"FR_NOT_READY：物理驱动没有工作", /* (3) The physical drive cannot work */
"FR_NO_FILE：文件不存在", /* (4) Could not find the file */
"FR_NO_PATH：路径不存在", /* (5) Could not find the path */
"FR_INVALID_NAME：无效文件名", /* (6) The path name format is invalid */
"FR_DENIED：由于禁止访问或者目录已满访问被拒绝", /* (7) Access denied due to prohibited access or directory full */
"FR_EXIST：由于访问被禁止访问被拒绝", /* (8) Access denied due to prohibited access */
"FR_INVALID_OBJECT：文件或者目录对象无效", /* (9) The file/directory object is invalid */
"FR_WRITE_PROTECTED：物理驱动被写保护", /* (10) The physical drive is write protected */
"FR_INVALID_DRIVE：逻辑驱动号无效", /* (11) The logical drive number is invalid */
"FR_NOT_ENABLED：卷中无工作区", /* (12) The volume has no work area */
"FR_NO_FILESYSTEM：没有有效的FAT卷", /* (13) There is no valid FAT volume */
"FR_MKFS_ABORTED：由于参数错误f_mkfs()被终止", /* (14) The f_mkfs() aborted due to any parameter error */
"FR_TIMEOUT：在规定的时间内无法获得访问卷的许可", /* (15) Could not get a grant to access the volume within defined period */
"FR_LOCKED：由于文件共享策略操作被拒绝", /* (16) The operation is rejected according to the file sharing policy */
"FR_NOT_ENOUGH_CORE：无法分配长文件名工作区", /* (17) LFN working buffer could not be allocated */
"FR_TOO_MANY_OPEN_FILES：当前打开的文件数大于_FS_SHARE", /* (18) Number of open files > _FS_SHARE */
"FR_INVALID_PARAMETER：参数无效" /* (19) Given parameter is invalid */
};
测试函数**************************************************************************************************************************
void Test_f_mount(void)
{
FRESULT result;
FATFS fs;
/* 挂载文件系统 */
// result = f_mount(&fs, "", 1); /* Mount a logical drive */
result = f_mount(&fs, "1:", 1); /* Mount a logical drive */
if (result != FR_OK)
{
printf("挂载文件系统失败 (%s)\\r\\n", FR_Table[result]);
}
else
{
printf("挂载文件系统成功 (%s)\\r\\n", FR_Table[result]);
}
/* 卸载文件系统 */
result = f_mount(NULL, "1:", 1);
if (result != FR_OK)
{
printf("卸载文件系统失败 (%s)\\r\\n", FR_Table[result]);
}
else
{
printf("卸载文件系统成功 (%s)\\r\\n", FR_Table[result]);
}
}
在fatfs外挂一个设备的时候，通过 f_mount(&fs, "", 1);就可以访问，而在多个设备时，就得指定磁盘号
支持以下两种方式:
f_mount(&fs, "1:", 1);
f_mount(&fs, "1:/", 1);
这种方式不支持：
f_mount(&fs, "1", 1); |
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发表于 2014-6-4 21:10:28
发表于 2014-8-21 16:13:51
