How can I flow control USB pipes using NAK? STM32F777 chip USB-OTG HS device.. I need to intelligently use NAK handshakes to flow control data from the host side.

[SMunn]

STM32F777 chip USB-OTG HS device..

I need to intelligently use NAK handshakes to flow control data from the host side.

I am using Custom HID as the initial framework, but modifying it for our purposes.

[SMunn]

Never mind, I figured it out. It is actually simplicity itself.

Until you invoke USBD_LL_PrepareReceive() all further incoming packets get NAKed.

[SMunn]

Duhhh!!