[fuse-emulator-devel] Discussion about Fuse changes for hardware product

[<all...@he...>]

Hi,

I'm working on a product that uses a Raspberry Pi Zero W on a custom 
board running Fuse
called the Hermit Retro ZXZero. Development is now pretty much complete 
and I thought
it'd be a good time to contact you all to start a discussion about how 
the Fuse changes
could be incorporated into the main Fuse builds.

Info about the product is here:

https://hermitretro.com

(I also see increased chatter about a new version, so my timing is 
either great or
terrible!)

In summary, I've:

- Support for buildroot environment
- New GPIO-based peripherals for handling keyboard and joystick
- Disabled various menus

I've tried to keep the changes as minimal as possible and follow the 
general style.
I've uploaded Fuse 1.5.7 as a branch to my github and the current branch 
is also
there and can be directly compared if that's easier. Or, in general, 
grep for
BUILD_HERMITRETRO_ZXZERO.

This build uses SDL1. I see from chatter that that might be 
deprecated...

Direct comparison link between Fuse 1.5.7 and current branch:

https://github.com/hermitretro/fuse-hermitretro/compare/hermitretro-zxzero-1-0-0

I've attached some commentary of the various changes and why.

Thanks in advance,

A.

Changes
-------

libspectrum

- Minor changes to configure.ac to support --with-buildroot flag which 
basically adds -DBUILDROOT and enables building under a buildroot 
environment. This isn't used within libspectrum itself but leaving it 
out confuses the Fuse build

fuse-1-5-7

configure.ac

- Added --with-buildroot which removes the hard link to /usr/include and 
/usr/lib as buildroot builds are relative (usually 
$TARGET_DIR/usr/include during cross-compilation).
- Added --with-hermitretro-zxzero. Enable specific build for this 
hardware (also implicitly adds --with-buildroot, --with-gpio-membrane 
and --with-gpio-joystick)
- Added --with-gpio-membrane. Enables build of the new gpio-membrane 
peripheral)
- Added --with-gpio-joystick. Enables build of the new gpio-joystick 
peripheral

peripherals/hermitretro

- Added bcm2835.{c,h}. Low-level library for access to Raspberry Pi pins
- Added gpio-membrane.c. This adds handling for membrane/matrix-based 
keyboards in a generic(-ish) way
- Added gpio-joystick.c. This adds handling for Atari-based joystick in 
a generic(-ish) way
- Added gpio-common.c. Shared GPIO handler and the parent for the other 
gpio peripherals

fuse.c

- Add hermitretro peripheral registration
- Disable copyright display

infrastructure/startup_manager.h

- Add hermitretro peripherals

menu_data.dat

- #ifdef a whole load of menu options this variant doesn't need. The 
only change is really to rename File/Open... to Open...

menu.c

- Add a thunk function for the renamed File/Open to Open

spectrum.c

- Add polling for the new peripherals

ui/sdl/sdl.c

- Add polling in ui_event() for the GPIO peripherals. There's a comment 
in here that I'm unconvinced this should be here but if it's not none of 
the new peripherals work when widgets are displayed

ui/widget/about.c

- Added some info about Hermit Retro

ui/widget/widget.c

- Disabled some F keys