topic Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application in ColdFire/68K Microcontrollers and Processors

Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Fri, 31 Jul 2009 06:11:47 GMT

Hi,

I am trying to use 9S08JM60 SD FAT software in MCF51 Badge Board but it doesn't seem to work.

Maybe someone already had these troubles and could help me in this job.

My goal is to run a (real) datalogger software designed for automotive applications, based on AP32.

I'll port the AP32 software to MCF51 after SD is working fine.

Besides the usual voltage/frequency/temperature inputs, I'll use QG8s as interface coprocessors - I gave up trying to imagine what I'll connect in the future.

Any help will be appreciated.

Thanks in advance,

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Tue, 04 Aug 2009 06:18:15 GMT

Some progress done:

1. FAT_Read_Master_Block needed byte struct alignment setting in order to return coherent results.

2. File not found showed me how stupid I am, forgetting that XP uses hidden extension format so LOG.TXT turns out to be LOG.TXT.TXT

What is missing: FileWrite and FileClose does not seem to be working, any hints??

Thanks in advance,

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Tue, 04 Aug 2009 11:54:07 GMT

Solved:

Found a bug in SD_Write_Bloc (SD.C)

This software implements a software timer - wich is against Flexis recommendations - after sending the block to be written. It tipically worked on 9S08JM60 but crashed in MCF51.

The changes were from:

=============================================

for(u16Counter=0;u16Counter<BLOCK_SIZE;u16Counter++);

if((ReadSPIByte() & 0x0F) != 0x05)

=============================================

To:

=======================================================================

SD_response=0xFF; // #001 created this variable
while (SD_response==0xFF) SD_response=ReadSPIByte(); // #001 wait for SD response <> 0xFF
if((SD_response & 0x0F) != 0x05) // #001 checks if response = 0101 = data accepted

    {
        SPI_SS=DISABLE;
        return(WRITE_DATA_FAILS);
    }
========================================================================

Preliminary test appears to be working.

And I look like a lunatic, talking to myself.
At least maybe it helps someone.

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

baja_usb — Mon, 12 Oct 2009 10:05:09 GMT

Hi, I'm trying to store some data on a SD card using my JMBADGE. I found out that the SD_PRESENT pin is not PTB7 but PTF3, at least in the Rev. C board.

Although I've changed the code in the SD_Write_Block(...) routine, I can't get it work. How should be the byte struct alignment setting in the FAT_Read_Master_Block routine? How can I do that?

I saw the sd car reader webcast but, there is a .pdf or some kind of application note explaining the FAT API?

Thanks a lot!

Daniel

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Mon, 12 Oct 2009 21:05:37 GMT

Dear Daniel,

The byte struct alignment is a codewarrior setting, located in compiler options.

The FAT API I used is an 8-bit one, I could not find the powerpoint file that explained the Lite FAT but you could start digging at: http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=DEMOFLEXISJMSD&fpsp=1&tab=Design_Tools_Tab

Good luck,

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

baja_usb — Tue, 13 Oct 2009 03:28:19 GMT

Ok, I corrected the byte struct alignment and managed to create a text file. In the PC, running Window's Vista (32 bits) the Window's explorer shows the file in the SD card with the right name, the right size but when I try to open the file, the system can't find the file. In my Linux partition, I can open the file without any problems.

It seems to be some issue in the CloseFile routine, I think that is when writes the final cluster since the size of the file is read fine by the PC. Do you had the same problem? Is strange because a major error in the FAT table won't permit the read of the file, neither in the Linux system.

Best regards,

Daniel

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Tue, 13 Oct 2009 03:45:16 GMT

No, I don't have problems. I'm working on XP.

Cheers,

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

HummingbirdElec — Mon, 01 Mar 2010 12:49:08 GMT

Hi Daniel

I'm having the same problem - can create a file, right name, right size, but Windows vista can't find the file when i try to open it. Did you solve your problem?

Cheers, Norman

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

HummingbirdElec — Mon, 01 Mar 2010 13:17:43 GMT

OK, solved - just changed all file names to capitals - not sure why it works, but main thing is that it does!!!! If anybody knows why, it would be interesting to know.

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

xiujiang — Mon, 01 Mar 2010 19:17:57 GMT

Hey guys, I am having some problem with my JM60 SD card routine too.

However, I am storing data from my ADC to SD card as .wav file.

I managed to close the file correctly but I can't write more than 2MB for 8k format, & 1MB for 4k format.

Meaning 2MB only able to cater for approx 5 mins of recording.

I need to find out if our problems are related? or anyone has encountered similiar issue.

Please advise.

Thanks.

Regards,

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

gustavod — Wed, 15 Sep 2010 09:02:50 GMT

The FAT File System of freescale with some bug fixes was posted on:

http://code.google.com/p/brtos/downloads/list

Now supports up to 512 MB and the list function is working correctly.

Best Regards,

Gustavo

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

sebasira — Fri, 03 Jun 2011 07:41:07 GMT

Celso...

Can't believe I'm as stupid as you said before when I read your post I past over the part you said about hidden extension... That was the problem...

Now.. With mi badge board MC9S08JM60 I can't find the byte aligned you mentioned... Or is it only for CFv1 MCUs?

I'd like to learn more about FAT, you also mentioned a lite FAT guide.... have you found it?

Thanks!

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

TomE — Fri, 03 Jun 2011 14:20:41 GMT

> I'd like to learn more about FAT, you also mentioned a lite FAT guide.... have you found it?

Where else but?

http://en.wikipedia.org/wiki/File_Allocation_Table

Tom

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

sebasira — Fri, 03 Jun 2011 21:50:55 GMT

Thanks Tom!

I'll take a look at that... Also I ment not only FAT information, but information about how to implement it with MCUs... I try reading FAT codes, but I was thinking about a tutorial or something like that

Anyway.. your help is greatly appreciatted! THANKS!!!

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

sebasira — Fri, 03 Jun 2011 21:57:05 GMT

Celso, I've found the presentation you were talking about... It explain Lite FAT

it can be downloaded from here: link

Also, on Freescale website there's a video explaining this presentation: SD Card Training by Freescale

Hope it helps to anyone

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Mon, 06 Jun 2011 04:36:59 GMT

Dear Sebastian,

First of all, sorry for my late reply.

I took 2 days off for extended weekend - guess where? - Bs Aires.

I had to fulfill my quota of Bifes de Chorizo and malbec wines so Argentina is the best place. Good reason, huh?

Honestly I didn't see this subject since 2009, but I checked and the byte struct alignment is a codewarrior setting, located in compiler options. It is little endian/big endian option. CW default is one and the FAT driver needed the opposite.

I hope it helps.

Saludos,

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

sebasira — Mon, 06 Jun 2011 21:01:31 GMT

Hi Celso!

So you were visiting my country? Great! I hope you enjoy it... I've got no doubt about Argentine's meat and wines... they're great! I really love "asado".

Bs Aires is not my preferred city, it's too messy, people live with lot of stress that's the problem of being a Capital City and a really big one. I live in Rosario, the second city of the country... and I really love it...

Well, I've found struct aligment setting, manage to change it and now it's working perfectly... But I want it to know what does it mean... Or how you realize the problem were there, I guess it could take a mi a lifetime to figure it out.. I really don't pay much attention on codewarrior settings, because till now I never had to deal with them.

Thanks! and Saludos!

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

celsoken — Mon, 06 Jun 2011 21:37:51 GMT

I'm glad you solved your problem.

The problem is related to data organization.

It's quite simple, take a 32-bit example the hexa # 3F528644

It could be stored sequentially in memory like:

3F, 52, 86, 44 (MSB fist)

or like:

44, 86, 52, 3F (LSB first)

Regarding Rosario, it's my preference too (Fito, Les Luthiers, ...) but I was with my wife her preference is shopping. So we went to Bs As.

If you wanna discuss further pls do it in private because it is out of scope of this forum.

Saludos,

Celso

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

JimDon — Mon, 06 Jun 2011 23:42:10 GMT

Guys,

Endian order and struct alginment are two different things.

Did you change "Struct Align".

Which do you change?

It's not 100% clear to me....

Re: Problems porting SD FAT to MCF51 JM Badge Board - Datalogger application

sebasira — Mon, 06 Jun 2011 23:56:00 GMT

Hi Jim!

I've change Struct Align combo Box to be BYTE, under codewarrior project settings, under coldfire settings... It's available for CFv1, and it's no available for S08JM family

Hope it helps!

Celso, in your example wich is byte aligned? and what's the alignemnt of the other?

Thanks!