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  Topic: Bugs and solutions - new and historic
KokkeKat

Replies: 3
Views: 2075

PostForum: KokkeKat FAT-free SD card lib   Posted: Sun Oct 30, 2011 9:49 pm   Subject: Bugs and solutions - new and historic
Hi

This doesn't really qualify as a bug, but please note that you must make sure to set Sdstatus to 0 before calling Sdreadfsinfo or Sdwritefsinfo.

Otherwise, you will have a timeout problem aft ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Sat Oct 15, 2011 2:16 pm   Subject: For Beginners...
Hi Manans

You can use either HW or SW SPI. Just make sure that the initialization SPI clock is 100-400 kHz and then increase to the maximum. As far as I know, there is no specified lowest maximum c ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Fri Oct 14, 2011 10:11 pm   Subject: For Beginners...
Hi Manans,

One way is to multiply by 10 and store the result in a word variable that is an overlay over two separate bytes. Saving these two bytes to the card probably requires the least SD card sp ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Tue Oct 11, 2011 8:26 pm   Subject: For Beginners...
Hi Manans

I am happy to hear of your success. Smile

You are right about data corruption in case you eject the card or switch off the power during a write. If that happens, you will have fragments ...
  Topic: Published circuit not correct?!
KokkeKat

Replies: 8
Views: 2784

PostForum: KokkeKat FAT-free SD card lib   Posted: Wed Oct 05, 2011 9:32 pm   Subject: Published circuit not correct?!
Thanks for the info!
  Topic: Published circuit not correct?!
KokkeKat

Replies: 8
Views: 2784

PostForum: KokkeKat FAT-free SD card lib   Posted: Mon Oct 03, 2011 9:27 pm   Subject: Published circuit not correct?!
Hello again

Just to avoid confusion about multi-card topologies:

See section 3.3 in this document:
http://www.flashgenie.net/img/productmanualsdcardv2.2final.pdf

Here it says that SPI mode ...
  Topic: Published circuit not correct?!
KokkeKat

Replies: 8
Views: 2784

PostForum: KokkeKat FAT-free SD card lib   Posted: Mon Oct 03, 2011 9:04 pm   Subject: Published circuit not correct?!
Hi Walter

Thanks for the information about MAX3392E. I looked it up at www.farnell.se and it's about 6 EURO apiece. It's just what we need, but a bit expensive. Could you please report if you find ...
  Topic: Published circuit not correct?!
KokkeKat

Replies: 8
Views: 2784

PostForum: KokkeKat FAT-free SD card lib   Posted: Sun Oct 02, 2011 7:12 pm   Subject: Published circuit not correct?!
Hi Walter

You are right. The 5V ATMega32 needs a level shifter to 2.7-3.6V. The circuit drawing I published should say ATMega32L. Thanks for pointing this out.

The circuit I published is correct ...
  Topic: Latest release
KokkeKat

Replies: 0
Views: 1749

PostForum: KokkeKat FAT-free SD card lib   Posted: Sun Sep 11, 2011 7:12 pm   Subject: Latest release
Version 1.2 is now released. It contains fixes to the two bugs above and a new deletion routine for files and subdirectories. The deletion routine requires that you use Sddirlist and unbuffered writin ...
  Topic: Bugs and solutions - new and historic
KokkeKat

Replies: 3
Views: 2075

PostForum: KokkeKat FAT-free SD card lib   Posted: Sun Sep 11, 2011 3:46 pm   Subject: Bugs and solutions - new and historic
There is a v1.0 bug in the library. It's in Sdcreatefileordir, around line 1344 in KokkeKat_FAT-free_SD_lib_code.bas:



Gosub Sdwritesector
If Sdstatus = 0 Then
Sdsectord = Sdsectord - ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Sun Sep 11, 2011 3:40 pm   Subject: For Beginners...
Hi Manans

I can only answer for the one single MicroSDHC card I have used. It's a Kingston SDC4/8GB card (and it works - but only tested in the full-size adapter). I don't know if Kingston is selli ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Wed Aug 03, 2011 10:53 am   Subject: For Beginners...
Hi Manans

Please look at the two library files included in the zip file. One contains the developer switches and data declarations and the other contains the code. All the declarations required for ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Tue Aug 02, 2011 1:35 pm   Subject: For Beginners...
Hi Manans

Yes, the resistors are needed for pull-up to 2.7-3.6V. It is absolutely necessary that you have a good power supply that can deliver enough current within this voltage range. Any 3.3V vol ...
  Topic: For Beginners...
KokkeKat

Replies: 22
Views: 5725

PostForum: KokkeKat FAT-free SD card lib   Posted: Wed Jul 27, 2011 1:23 am   Subject: For Beginners...
Hi Manans

Yes. Please see the example code included in the download zip file.

Kind regards

Niclas
  Topic: Write Throughput
KokkeKat

Replies: 4
Views: 1924

PostForum: KokkeKat FAT-free SD card lib   Posted: Thu Jul 14, 2011 1:28 pm   Subject: Write Throughput
Hi Tom

Thanks!

I'll do it as soon as I can find the time. (I will be away on work and holiday in the next two weeks but I will post the result here then.)

Kind regards

Niclas
 
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