STM32F4DIS-BB FatFs

TLDR; Not going to dig through broken code. Published multiple working examples using the STM32F4BB-DIS. Currently have it working with >=256GB cards.

Key to throughput will be large, aligned blocks, as big as possible, 32KB would be good

Here's a build from 2013, I could probably dig up other posts and newer code

https://community.st.com/0D50X00009XkgXqSAJ

This thread is likely to have F407 specific code, FATFS and MSC example, scroll up/down a bit

https://community.st.com/0D50X00009XkiCESAZ

Reading/writing random blocks is likely to ****** up the file system, code specific to FatFs sector read/write resides in diskio.c layer

Thank-you ! Much appreciated.

Clive thanks for the updates for 2017. I was just reading the readme.txt file and I am questioning the feasibility in adapting the code that you provided into a Linux environment as it appears to be Window based. In the past I have imported a number of ST demo programs written for an IAR environment and they worked flawlessly. Am I setting myself up for an act in futility by transposing this code into a Linux environment? I am using a later version of GCC (i.e. 5.4.0) and the summon arm tool chain. I am not sure if you can answer that for me? It would seem to me that I ought to be able to get this program to work in Linux environment as I got the uSD Card program to work, but then again I could be completely wrong. Also might you be able to answer for me as to what file format might I best use for saving video. As I understand it I will need to access the DMA into blocks and save them onto the uSD Card yet I am at a loss on what file format to save them in. I am a novice at best so any insight would be helpful. Thanks in advance for you assistance.

Clive thanks in advance for your help. I am attempting to make use of the fsfatdemo_stm32f4dis_bb_2017_rev1 file that you supplied. It would appear that I am down to one error and that I need an update on the stm32f4xx_cryp.h or the stm32f4xx_cryp.c file as I am getting the following error and I am not sure what I need to do to correct it. Lots to learn at this end. I have no update on the stm32f4xx_cryp.c file (mine is 2012). I have enclosed a portion of the source code from 519. (see below).

STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp.c: In function 'CRYP_SaveContext':

*** here is a portion of the source at 519 ***

/* Save the current configuration (bits [9:2] in the CRYP_CR register) */

/* and, if not in ECB mode, the initialization vectors. */

/* save The key value */

Post disappeared, this is the 2013 source

https://drive.google.com/open?id=0B7OY5pub_GfIU0VFWWs2dmxKOFE

Using the latest link (i.e.

/external-link.jspa?url=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D0B7OY5pub_GfIU0VFWWs2dmxKOFE

A)

Yet when I flash things with

B)

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Clive that fixed it ! I really appreciate your help here and I wanted to thank you personally. Had you not assisted me it would have taken me forever and a day to get it to work. You definitely saved me a lot of time and it is clear to me that there was a lot of work involved and even though there is so much more for me to learn I now have something to work with. Thanks once again !

:)

I was looking to make another post related to this one, but in the interest of continuity I decided to post it here. For some time now I have been working with STM32F4DIS_BB Software Examples 20130307 from ST. To that end I got a number of the programs to work and I am now struggling to update the STM32F4xx_Camera_Example with the use of the FatFs updates that you provided (i.e. fsfatdemo_401_disco_rev1 ). The camera example has a number of provisions that make use of a FatFs structure from Embest that never worked – and as such I would like to implement what you have provided and make that happen. At best I have a working program that streams video to the display. As a preliminary first step I had thought it would be a simple matter of updating the camera example files with the updates that you provided and reinstate the camera program to stream the video followed by the implementation of the code that you provided for FatFs. Failing that do you have some updated code for the camera example using the Fatfs update? My initial findings are that upon updating the files to the camera example I am getting errors in the vicinity of stm32f4xx_i2c.c and stm32f4xx_spi.c. To get to the root of this matter I have created a spreadsheet comparing the camera example working files with the updated files with the hopes of isolating it. Might you offer some some additional insight on where to look and what to look at insofar as resolving this matter? I am finding that it is more complicated than I had initially anticipated.

Clive thanks for getting back to me - after much consternation I pinpointed the source of my grief. Arrgh!