Frustratingly, the latest released binaries of the Easy-PDK programmer software on the GitHub repository are only for the older v1.3, so they are missing support for many more recent Padauk MCU models (e.g. PMS150G). Support for these have only been added in the "development" branch of the software (which is essentially v1.4), so if you want that you have to build the software yourself.
I wanted to build the Windows binary, but for most *nix-centric software actually doing so on Windows itself is usually a clusterfuck (authors typically expect an environment with all sorts of nonsense like cygwin, msys, etc.), so it's nearly always much, much easier to cross-compile on Linux.
In case anyone else at some point wants to do the same, I figured out how:
1. Download (and unzip) or Git clone the "development" branch:
https://github.com/free-pdk/easy-pdk-programmer-software/tree/development2. If not already available, install the MinGW development tools (e.g.
sudo apt-get install mingw-w64 on a Debian-based system).
3. Build the included argp-standalone library (from within lib/argp-standalone-1.3 folder):
./configure --host=x86_64-w64-mingw32 CFLAGS='-w -Os' && make4. Finally, build easypdkprog:
make CC=x86_64-w64-mingw32-gcc EPDKVER=1.4 ECFLAGS=-Ilib/argp-standalone-1.3 ARGPSALIB=lib/argp-standalone-1.3/libargp.a EXE_EXTENSION=.exe