2009-07-01 04:02:30 Problems wirh MBW in spi_mmc_core.c
Patrick Hotz (GERMANY)
Message: 76563
Hi,
i have a running uClinux2008R1 with a 2GB SD-Card over SPI.
If i run a program which is using much time to read and write data to RAM and want to save a file simultaneously to the SD-Card i get a failure "MBW FALIED!!!!!!!!!!!".
I have searched this error and found in "spi_mmc_core.c" a falue "MBW_ALLOWED".
Can i turn of this feature to write only one block after another to solve this problem? Or can i do anything else?
Regards,
Patrick
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2009-07-01 09:16:12 Re: Problems wirh MBW in spi_mmc_core.c
Mike Frysinger (UNITED STATES)
Message: 76594
what exactly do you mean by "2008R1" ? are you talking about the svn branch or an actual release ? the SPI/MMC is known to have a lot of problems in the actual releases.
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2009-07-01 10:45:56 Re: Problems wirh MBW in spi_mmc_core.c
Patrick Hotz (GERMANY)
Message: 76597
Hi Mike,
it is the 2008R1 release.
I have currently set the "MBW_ALLOWED" to "0" it seems to work better with my application.
Patrick