I'm on a Mac running Mac OS X 10.12.4 (Sierra). I have an old Teensy++ 1.0 (board type AT90USB646) that I wanted to compile a sketch for, but it appears this old Teensy is not supported on the newer Arduino. I tried setting the board to Teensy++ 2.0, but the compiler fails to download the code. I get a File Compatibility Error stating it sees a AT90USB646 (correct for this old board), but it's compiling for the Teensy++ 2.0 AT90USB1286. This tells me the loader sees my board, but the compiler doesn't have a model for it.
I've Googled for a solution and it seems the answer is to modify the Arduino.mk file and edit the MCU variable, which seems straight forward. I've use the terminal to look around the filesystem, but I can't find a makefile with that name.
My questions are, 1) where is this makefile? Or 2) if it's one I need to create, where would it be placed, and 3) is there a makefile example for guidance on its content and structure?
Thanks,
-Kirk
I've Googled for a solution and it seems the answer is to modify the Arduino.mk file and edit the MCU variable, which seems straight forward. I've use the terminal to look around the filesystem, but I can't find a makefile with that name.
My questions are, 1) where is this makefile? Or 2) if it's one I need to create, where would it be placed, and 3) is there a makefile example for guidance on its content and structure?
Thanks,
-Kirk