spire

sp-1 emulator for renode

what it does

• emulates the sp-1's nrf52840, leds, buttons
• shows a virtual device window with clickable buttons and live led feedback
• can be used for easier debugging custom firmware

install

renode

# i use arch so this is a guide for arch-based 
yay -S renode-bin # or your favorite aur helper

python deps

pip3 install tkinter

usage

quick start

cd spire
./run.sh [path/to/firmware.elf]

this opens renode with the sp-1 platform and the virtual device gui with your firmware booting.

virtual device

component	emulated?	notes
nrf52840 cpu	full	cortex-m4, 1mb flash, 256kb ram
gpio / leds	visual	4 playback + 4 track leds
function button	clickable	p0.27, active low with pull-up
play/track buttons	clickable	resistor ladder via adc
i2c bus	stub	cs42l42 at 0x48, tas2505 at 0x18
i2s audio	stub	48khz 24-bit output captured
emmc storage	stub	4gb block device
wdt	full	nrf52840 hardware model
power / system_off	full	power peripheral model

project structure

spire/
├── sp1.repl              # renode platform description
├── sp1.resc              # renode script (load + start)
├── run.sh                # launcher (renode + gui)
├── peripherals/
│   └── sp1_gui.py        # virtual device gui
└── README.md

license

MIT