TMK/Teensy Firmware with USB->PS2 Compatibility Mode?

[mil]

Hi all,

I just built myself a Planck (which has firmware based on TMK) and now I'm just realizing that the TMK firmware does not come by default with some sort of PS2 compatibility.

E.g., if I plug the Plank's USB into one of these USB->PS2 converters, I'm out of luck..

As it turns out these adapters are passive and require the firmware of the keyboard/mouse to know to send PS2 commands when not registered with USB protocols. There are of-course active USB->PS2 adapters that implement this translation -- but I'd rather do this with my existing firmware onboard (the Planck Teensy) and one of the passive adapters I already own if possible.

Does anyone know of TMK or another Teensy Firmware that support a PS2 Compatibility mode?

[mil]

Well after some research I've found:
http://blog.winkeyless.kr/185

Which appears to be an answer for PS2 firmware, however I am far from the know how to figure out how to translate that firmware to work with the Planck, so eep.