which microSD ??

Sarek · Joined: 15 Oct 2009 Posts: 72

Hello,

I use a microSDHC for data logging on a XMega.
Now we have severe problems with the SD-Cards, we use Intenso 4GB Class 4 microSDHC.
About 50% of about 100 Cards are running, but the other 50% do not...

I called Intenso support, and they told me that SPI Interface is not in their specification, because this is a consumer product.
Has someone an idea which microSD we can use? They should be 100% SPI compatible!

Thanks

plouf · Joined: 19 Jan 2012 Posts: 78 Location: Athens,Greece

you just reached "first level support" who can tell up to how to format it

try with kingstone
reason is that they have the specification ON THEIR SITE -> http://www.kingston.com/datasheets/SDCIT-specsheet-64gb_en.pdf
which clearly states that card support both SD and SPI interface

at any case you can reach somehow someone,in case of problem, (someone must put this pdf online)

Sarek · Joined: 15 Oct 2009 Posts: 72

Thanks plouf

but this datasheet is for SDXC Cards, which are not supported by AVR-DOS.
Do you have any experience with Kingston Cards and AVR-DOS?

plouf · Joined: 19 Jan 2012 Posts: 78 Location: Athens,Greece

no i have no personal experience

hoewever this is for kingstone and sdhc
www.kingston.com/datasheets/SDCIT-specsheet-8gb-32gb_en.pdf

they clearly state it..

and at least seems that in Kingstone they KNOW what spi is , and what their cards support !!

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

did you format the sd card before use it ?
see https://www.sdcard.org/downloads/formatter/

I use a lot of Micro SD card mainly sandisk 8Gb SDHC I never have pb
JP

Wink

Sarek · Joined: 15 Oct 2009 Posts: 72

Yes I tried to format it with SDCARD org Formatter

I order now 10pieces of Kingston microSDHC 8GB
this is Industrial version

I will test and report here

Sarek · Joined: 15 Oct 2009 Posts: 72

@Duval JP
It seems that the small Sandisk (4/8GB) microSDHC are End of Life. => poorly available