Pico-Game-Controller

WIP code for a rhythm game controller using a Raspberry Pi Pico. Intended for SDVX but is capable of handling 11 buttons, 11 LEDs, and 2 encoders.

Currently working/fixed:

Gamepad mode - untested on EAC - default boot mode
Keyboard & Mouse Mode - limited to 6KRO - hold btn-a to enter kb mode
HID LEDs with Reactive LED fallback - untested
sdvx/iidx spoof - untested on EAC
1000hz polling
Fix 0-~71% encoder rollover in gamepad mode, uint32 max val isn't divisible evenly by ppr*4 for joystick - thanks friends
Switch and LED pins are now staggered for easier wiring

TODO:

Store last mode in flash memory https://www.raspberrypi.org/forums/viewtopic.php?t=305570
nkro
debounce
split input updating into pi pico's second core?

How to Use:

For basic flashing, see README in build_uf2
Otherwise, setup the C++ environment for the Pi Pico as per https://datasheets.raspberrypi.org/pico/getting-started-with-pico.pdf
Build pico-examples directory once to ensure all the tinyusb and other libraries are there. You might have to move the pico-sdk folder into pico-examples/build for it to play nice.
Move pico-sdk back outside to the same level directory as Pico-Game-Controller.
Open Pico-Game-Controller in VSCode(assuming this is setup for the Pi Pico) and see if everything builds.
Tweakable parameters: Pinout, bindings in pico_game_controller.c, USB device reporting as SDVX/IIDX(con_mode) in usb_descriptors.c