USB Host can not work when heap is on OCRAM

[cghxm1987]

usb_host_msd_fatfs(SDK_2.5.0_MIMXRT1052xxxxB).When I put the heap on DTCM.It's OK.But when I put the heap on OCRAM.It doesn't work.How can I solve this problem?

[jorge_a_vazquez]

Hi xm hu

Please disable the cache in the example code where you use the OCRAM:

SCB_DisableICache();

SCB_DisableDCache();

you can find more information in the post:

K61 HS USB with cache enabled 

It is for a Kinetis device, but you can apply the same concept in the RT device.

Hope this information helps.
Have a great day,
TIC

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