Usb Stm32f746

[Alexander Skupov]

Posted on October 17, 2017 at 06:33

Hello

I am using STM32F746-Discovery.

I run USB in high speed mode.

Internal DMA is enable.

But, if I use ICache and DCache my host is't initialization.

Who will tell me what the problem is?

What am I doing wrong?

Alex

[waclawek.jan]

Posted on October 17, 2017 at 10:43

You shouldn't DMA to/from cached memory. DMA accesses directly the memory. Read the related application notes you find on the 'F7xx product pages.

JW