ESP-WROOM-32 ili9341 Assembly Graphics Demo 🚀 (Cheap Yellow Display)

Welcome! This project is a fun experiment with low-level graphics on the ESP32 using pure assembly. After building a MicroPython helper for ESP32 dev, I wanted to dive deeper—this time, with Vercel assembly and direct hardware control.

What is this? 🤔

• Platform: ESP-WROOM-32 (ESP32)
• Display: ili9341 (240x320, SPI)
• Language: Assembly (xtensa)
• Goal: Paint the display red... but ended up making it blink instead! 😅

What works? ✅

• Initializes the ili9341 display
• Blinks the screen (red on/off)
• All written in assembly for maximum fun and pain

What didn't work? ❌

• Painting the display solid red (not yet!)

Why? 💡

Just for the challenge! If you love bare-metal hacking, this is for you.

How to build & flash 🛠️

Clone the project, cd to it

python -m venv .venv && source .venv/bin/activate
pip install esptool
make clean && make && make flash

Files 📁

• boot.S, main.S, ili9341.S: Assembly sources
• linker.ld: Custom linker script
• Makefile: Build & flash automation

Next steps 🏁

• Fix the fill screen routine
• Add more colors & graphics
• maybe port to C for sanity?

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Made with ❤️, frustration, and a blinking display!