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CAN I use USB OTG_HS with internal FS PHY and get RX DMA?

MSimm.15
Associate

‎2018-10-16 09:42 AM

In the FS mode the reference manual state that  USB RX DMA is only available in HS mode. In MXCube it seems that I can set USB OTG HS and set internal Phy to "device only". Does this activate the RX DMA? ​It also seems to change the pins assignment on the stm32f765vgt 100 pin package from PA11/pA12 to PA14/PA15.  Do this also does not to use the USB bootloader mode?

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1 REPLY 1
waclawek.jan
Guru

‎2018-10-16 10:11 AM

PA11/PA12 is OTG_FS. OTG_FS does not have DMA built in.

PA14/PA15 doesn't have any OTG functionality.

OTG_HS, if used in FS mode with the internal FS PHY, uses PB14/PB15 as OTG_HS_DM/OTG_HS_DP.

Please reformulate your question, pay attention to details.

JW

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