fopen() Max Files - SYS/BIOS + FatFs

Brian Boru

Hi,

I have a requirement to open ~300 files on SD card. I am using SYS/BIOS, and BIOS PSP MMCSD driver (biospsp_03_00_01_00). I have tried changing _NFILE in stdio.h to 300, then FOPEN_MAX is set to _NFILE in the same file. I also set _NSTREAM in file.h to 300. With these changes, I rebuilt the rts6740_elf.lib library. I think that this is the relevant library for C6748? Or maybe there is another library that has to be rebuilt? I rebuild this from my ti-cgt-c6000_8.0.3/lib directory.

My SYS/BIOS (bios_6_42_03_35) is in a different directory, but the FatFs files seem to pull from file.h in my CGT directory. I rebuilt SYS/BIOS also.

With these changes, I can still only open a max of 40 files. Is there something else that I am missing here?

Thanks

Brian

over 9 years ago

0 Shankari G over 9 years ago

TI__Mastermind 43955 points

Hi Brian,

In the below thread, it seems the same query is been answered by Titus. And I guess, it is you who posted this query that time too.

Wasn't it solved that time? Did you try out the suggestions given by Titus ? He mentioned that he is able to open up 500 files??

0 Brian Boru over 9 years ago in reply to Shankari G

Expert 1030 points

Hi Shankari,

I was having some difficulty rebuilding the FatFs library, but got it to rebuild and was able to open more files after.

Thanks for your help.

Brian

0 Shankari G over 9 years ago in reply to Brian Boru

TI__Mastermind 43955 points

Hi Brain,
I'm glad that you are able to solve the problem.
Thanks for updating.

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fopen() Max Files - SYS/BIOS + FatFs