Porting to NuttX / composite mode / U2F

[Matias N.]

Hi,
I was wondering whether you think it should be possible (and not too much work) to port the application logic to the NuttX RTOS, instead of using chopstx. I ask because it would be interesting to add more functionality to the device by taking advantage of NuttX features, such as USB composite mode. This would then allow to integrate other modes such as U2F in the same device (by taking advantage of existing https://github.com/gl-sergei/u2f-token).

I understand that U2F functionality is not planned for gnuk itself, right?

Best,
Matias
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