STM32F427, USB HighSpeed RXFLVL and DMA

Posted on May 27, 2014 at 15:05

Hello @all,

does anyone know how the following registers behave when the USB peripheral is used in HighSpeed mode(?):

- OTG_HS_GRXSTSR/OTG_HS_GRXSTSP : is it required (or even possible) to read/pop a status when DMA transfers the packets?

- OTG_HS_GINSTS: is the RXFLVL flag used in DMA mode?

- How is the data flow if DMA is enabled for the peripheral?

best regards,

bs