Hi all.
I the FrequencyTimer2 library in one of my projects with Teensy3.6. I need to generate interrupts at a frequency of 1 or 2Mhz.

I'd like to try the new Teensy 4 in my project but the library doesn't compile. The problem seems to be that in teensy\avr\cores\ teensy4 there are many #defines of processor records that change.
For example, the variable F_BUS seems to have been replaced by F_BUS_ACTUAL and records such as CMT_CMD3, CMT_PPS, CMT_MSC specific to Kinetix etc. are missing.

I would like to port the library to Teensy 4, could someone guide me in equivalences between the Kinetix and arm registers?

Thanks in advance.