Actions
Forum Thread Details
  • State Suggested Answer
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 303 subscribers
  • Views 812 views
  • Users 0 members are here
Related
See a helpful answer?

Be sure to click 'more' and select 'suggest as answer'!

If you're the thread creator, be sure to click 'more' then 'Verify as Answer'!

Discovery board. HTTP Server. Webpage in SD

Former Member

Hi Everyone,

 

I have a STM32F4Discovery board from ST Microelectronics, and I have implemented on it an http server using the lwip v1.41 stack. I also have implemented a micro-SD with SDIO and FATFS, and USB FS as a mass storage device. All of this is working fine together.

 

My question is if I can store the webpages in the SD card in binary format instead of using the fsdata.c inside the microcontroller flash. If so, how can I do that? Is there any example?

 

Thanks

  • 0

    I don't know that there is an example, and I only looked at the code to see if I could answer your questions, but here goes.

     

    In the file fs.c and fs.h is where your access to the "filesystem" is implemented. I think if you replace those the methods/functions in fs.c to read directly from the sd card you would effectively do what you want to do.

     

    They look like fairly simple/standard functions so it shouldn't be too difficult.

     

    Good luck,

     

    Mike

  • 0 in reply to mconners

    BTW, to clarify a little bit you would want to replace

     

    fs_open(), fs_close(), fs_read(), etc.. with functions of the same name, that take the same arguments and have them call the functons that you would use to access the file system on the sd card.

     

    You would have to take care of the mount somewhere, but you could create an fs_init() function that gets called from httpd.c when it gets loaded.

     

    What you are essentially doing is creating an adapter or a facade.

     

    Mike

  • 0 in reply to mconners

    Mike,

     

    Thanks for your help.

    I couldn't make it work yet (I'm kind of newbie in http and fatfs image) but I'm sure that's the way I have to follow.

     

    Martin

  • 0 in reply to Former Member

    I'm not completely familiar with the entirety of the code you were working with, but I'm pretty certain the suggestions I made will get you where you need to go.

     

    In the fat fs code there are going to similar function calls to *_open(), *_close(), *_read(), so you either need to modify fs.c to call the functions in your fatfs code, or modify httpd.c to call the fatfs functions directly instead of the ones in fs.c.

     

    It seems like you've done pretty well getting all of that to work together so I'm sure you can get it done.

     

    Mike