USB Full Speed question

r239955_stm1 · ‎2014-07-28

Posted on July 28, 2014 at 09:05

Hey guys,

I'm using USB Full Speed in CDC with a computer. Everything works well but I would like to increase the throughput by using DMA.

I never see any examples of this, I don't know if it's possible ...

My opinion is replace USB_OTG_WritePacket() by personnal function using DMA. I'm a little bit lost.

I need some advice about how I can achieve it.

Thank you by advance

r239955_stm1 · ‎2014-07-28

Posted on July 28, 2014 at 11:46

I think it's impossible to access USB fifo buffer with DMA (even if there is memory to memory data transfert).