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which microSD ??

 
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Sarek

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Joined: 15 Oct 2009
Posts: 55

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PostPosted: Thu Aug 19, 2021 1:15 pm    Post subject: which microSD ?? Reply with quote

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
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plouf

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Joined: 19 Jan 2012
Posts: 37
Location: Athens,Greece

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PostPosted: Thu Aug 19, 2021 2:30 pm    Post subject: Reply with quote

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)
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Sarek

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Joined: 15 Oct 2009
Posts: 55

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PostPosted: Thu Aug 19, 2021 2:42 pm    Post subject: Reply with quote

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?
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plouf

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Joined: 19 Jan 2012
Posts: 37
Location: Athens,Greece

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PostPosted: Thu Aug 19, 2021 2:54 pm    Post subject: Reply with quote

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 !!
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Duval JP

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Joined: 22 Jun 2004
Posts: 1004
Location: France

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PostPosted: Thu Aug 19, 2021 4:15 pm    Post subject: Reply with quote

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

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Sarek

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Joined: 15 Oct 2009
Posts: 55

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PostPosted: Thu Aug 19, 2021 4:25 pm    Post subject: Reply with quote

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
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Sarek

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Joined: 15 Oct 2009
Posts: 55

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PostPosted: Thu Aug 19, 2021 4:34 pm    Post subject: Reply with quote

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