Hello,
I'm trying to add SDHC support to a STM32 4 bit mode driver (not SPI) which works fine with normal SD. Before ACMD41 I added CMD8 with 0x01AA as a parameter; the answer is the same (0x01AA) which is OK. In the following ACMD41 I set HSC bit (arg is 0x40000000), but in the STM32 SDIO controller the timeout flag is set.
Did someone write a SDIO 4 bit driver for SDHC, please?
Thanks to all!
you must send 0xC0FF0000 not 0x40000000
you OR the HSC to the normal value, not sending JUST the HSC bit alone..
thats it :)
Antti
Il 07/03/2010 21:07, Antti ha scritto:
Thanks Antti,
I tried also to OR old param with HSC with no success. I tried also with your ACMD41, but it doesn't work. Timeout flag is still set into STM32 SDIO controller.
Thanks for your help!!!
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