Cranpose on an emulated ESP32-S3

This page runs the firmware of a Cranpose app on an ESP32-S3 that your browser emulates. The ROM, ESP-IDF's bootloader and the app run as they would on a board: Cranpose composes, lays out and draws every frame on the emulated Xtensa LX7, and the frames reach the canvas below through the emulator's virtual RGB panel.

How it works

• The emulator is Espressif's QEMU with its ESP32-S3 board, moved onto qemu-wasm, which compiles hot guest code to WebAssembly while it runs. The changes are in cranpose-esp32-qemu.
• The firmware is a Rust app on cranpose-platform-esp-idf: it draws each picture on the CPU and sends the changed rows to an ESP-IDF LCD panel. Its source is in cranpose-esp32.
• The emulator follows the chip's instructions, not its timing: frame times here say nothing about a real board, and booting takes several seconds.