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16 GiB Class5 Micro SDHC card not recognized by sansa players

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bluebrother:
As far as I know does Rockbox use the SPI mode of SD cards to access them (can someone with knowledge of the SD code confirm this?). However, for microSD cards SPI mode isn't mandatory, and according to wikipedia "Some MicroSD cards do not support SPI mode.[citation needed]". See http://en.wikipedia.org/wiki/SDHC#Transfer_modes

What exact card do you have?

funman:
I think no rockbox target use SPI mode for SD cards:

The specification says CMD58 is used for reading OCR register in SPI mode and sd.h header doesn't have this command.

Also e200v1 driver use 4 bits mode which is not possible in SPI either.

Can you go to System -> Debug -> View Disk Info and browse to [microSD 1] tab and post info?

bind:

--- Quote from: funman on June 18, 2010, 09:03:39 PM ---Can you go to System -> Debug -> View Disk Info and browse to [microSD 1] tab and post info?

--- End quote ---

[microSD 1]
Rev 0.0
Prod: 4/2010
Ser #: 0x00000DE2B
M=00, O=
Blocks: 0x01F40000
Speed: 25.0Mbits/s
Taac:10.0ms
Nsac: 0 clk
R2W: *2
IRmax: 100..35 mA
IWmax: 100..200 mA

a strange thing happened when i navigated to this tab - the card was recognized by the player and is allowing me to build a playlist!

seems to be working now

thank you very much

maybe this information should be posted somewhere in the documentation for people with a similar issue.

funman:
This menu has no incidence on the microSD, it only shows information which was previously retrieved, so i think it just happened to work by chance.

bluebrother:

--- Quote from: funman on June 18, 2010, 09:03:39 PM ---I think no rockbox target use SPI mode for SD cards:

--- End quote ---

Ok, so I was under a wrong impression here. Thanks for clarifying.

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