esp-rolling-stone's Introduction

esp-rolling-stone 🦀

Wokwi-example how the 8x8 LED Dot Matrix Display (max7219 with help of my crate in our case) is initialised for ESP32

Instructions

Build

cargo build --target xtensa-esp32-none-elf --release

Execution with VSCode Wokwi extension

Except of extension itself, you will need two files to execute the simulatuion inside of your VSCode IDE:

wokwi.toml
diagram.json

Both of them are already provided in this repo and you can edit them as needed.

F1 -> Wokwi: Start simulation

In case you will have additional questions - feel free to open an issue 😉

Description

There's a short example for newcomers that shows, how 8x8 LED Matrix display is initialised on different Espressif boards (ESP32, ESP32S2, ESP32C3) in bare-metal, this config is for ESP32 in terms of example, you can find brief instructions for other chips below

P.S. : You can edit string at line 92 😉

Tips for other chips

For esp32c3 board target (and corresponding changes for paths in wokwi.toml) is:

riscv32imac-unknown-none-elf

Board type in diagram.toml is:

"type": "board-esp32-c3-devkitm-1"

For esp32s2 board target (and corresponding changes for paths in wokwi.toml) is:

xtensa-esp32s2-none-elf

Board type in diagram.toml is:

"type": "board-esp32-s2-devkitm-1""

For esp32s3 board target (and corresponding changes for paths in wokwi.toml) is:

xtensa-esp32s3-none-elf

Board type in diagram.toml is:

"type": "board-esp32-s3-devkitc-1"

Troubleshooting

For xtensa targets you need to have esp-idf exported in your terminal
In case of errors, related to esp-hal driver - try to play with dependencies versions on Cargo.toml. Sometimes there're a lot of breaking or light changes, that can affect building process

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