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Problem SDIO+ USB Mass storage device

Question asked by Mikael.Elharrar on Feb 22, 2012
Hi all,
I have a problem with SDIO+USB Mass storage device.
My eMMC driver now works (in stand alone without USB), and the USB mass storage device also works only if I remove the callbacks functions of init emmc, read and write. That mean my computer detect a new dongle was inserted but without any more info or possibilities to do something.
My problem occurs when I want to "connect" my callback functions to the eMMC driver the init fails.

I think there is an interrupt problem. USB works with high level interrupt and eMMC also. So when USB want to init/read/write the eMMC it is from an interrupt handler.
If I play with the interrupt priorities, USB doesn't works at all ...

Someone knows this issues ?

Thanks.
Mikael

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