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I made changes as in infocenter.arm.com/.../index.jsp to use mmc/sd within usb core:
void MSC_MemoryRead (void) { U32 n; ... mmc_read_sect(Offset,Memory,n);// Call your function to read from the flash card. USB_WriteEP(MSC_EP_IN, &Memory, n); // Send the data through the endpoint. ... }
but this not work,I check mmc_read_sect and return TRUE, I am using LPC2468 mdk and rl-arm 3.40. When I use usbmem example the drive appears in explorer and I see "readme.txt". But when I change to mmc/sd not happens. Anybody already use this or have some tip? thank you!
Hi,
exactly the same behaviour with a LPC3131 : http://www.keil.com/forum/docs/thread14869.asp
According my tests, this is not a timing issue. I think that something goes wrong when using MMC interface with USB.
What is the link on arm website that you follow to use MMC within usb core ? I can't find the document.
Best regards
infocenter.arm.com/.../index.jsp
(Actually, remove that ',')