FATFS SDIO 读写SD卡速度超过2MBPS写失败

1万 · 2018-11-2 08:59

我用的FATFS SDIO 读写SD卡发现SDIO低于2M的时钟比较可靠, 一但高于写入SD卡就很容易失败
有人碰到这种情况吧,
我怀疑过硬件,但是硬件不知道怎么调整. 是不断加电阻来调整振铃吗?

只看该作者 · 2018-11-2 10:02

不应该呀,10几M都没有问题的,你怎么弄的?没想法

只看该作者 · 2018-11-2 19:42

STM32时钟还有 SPI时间是不是低了

1万 · 2018-11-4 07:38

huzi2099 发表于 2018-11-2 10:02
不应该呀,10几M都没有问题的,你怎么弄的?没想法

开始写几K数据正常, 然后就写入失败 FSFAT 报硬件错误. 或是磁盘错误

只看该作者 · 2018-11-5 08:04

eydj2008 发表于 2018-11-4 07:38
开始写几K数据正常, 然后就写入失败 FSFAT 报硬件错误. 或是磁盘错误

你截一下sdio报告的错误类型

1万 · 2018-11-6 10:12

huzi2099 发表于 2018-11-5 08:04
你截一下sdio报告的错误类型

--->f_read fileIndex=1
===>i=1 BAT Status=1 V= 4061==100!
---> f_open Pen_001.pen
！！打开太多文件。 FR_TOO_MANY_OPEN_FILES
--->OpenFilePageFunc f_open rst=18
--->CloseFilePageFunc f_close rst=9
！！无效的文件或路径。 FR_INVALID_NAME

typedef enum {
FR_OK = 0, /* (0) Succeeded */
FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
FR_INT_ERR, /* (2) Assertion failed */
FR_NOT_READY, /* (3) The physical drive cannot work */
FR_NO_FILE, /* (4) Could not find the file */
FR_NO_PATH, /* (5) Could not find the path */
FR_INVALID_NAME, /* (6) The path name format is invalid */
FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
FR_EXIST, /* (8) Access denied due to prohibited access */
FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
FR_NOT_ENABLED, /* (12) The volume has no work area */
FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */
FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
} FRESULT;