Tom Schouten wrote:
I wonder though, control requests are PC->USB only,
right?
Wrong.
It wouldn't work well for incoming asynchronous
C-APDU from the phone
It would work fine.
as the PC needs to poll constantly in software
All USB communication is polled.
Study chapters 5 and 8 of the USB 2.0 specification.
http://www.usb.org/developers/docs/usb_20_110512.zip
//Peter