ESP32

Porting MicroPython’s LVGL Bindings to ESP32 I am not sure why nobody provides ready-made ESP32 firmware with MicroPython’s LVGL bindings, so I compiled one and recorded the steps. Steps All the steps below were done on a Linux system; other systems are similar, so I will not elaborate. Switch the ESP-IDF version The official LVGL bindings support up to v4.4; see Setting up ESP-IDF and the build environment. The ESP-IDF changes quickly and MicroPython only supports certain versions. Currently MicroPython supports v4.0.2, v4.1.1, v4.2.2, v4.3.2 and v4.4, although other IDF v4 versions may also work. ...

ESP32 Development with CLion Since I wasn’t used to VSCode’s half-baked C++ IDE features, I turned to CLion. But CLion in turn faces the problem of having fewer plugins than VSCode, so I ran into issues when developing for the ESP32. Finally, let me stress: if you primarily use VSCode for development, just use the official plugin provided by ESP32 — it’s simple and convenient, no command line required. Steps Actually, there is no need to bother with environment variables or cross-compilation toolchains. I’ve tried them, and they’re useless — they only add unnecessary trouble. ...

Developing ESP32 with VSCode I stepped on the pitfalls so you do not have to — consider this a ladder to help you climb out. 1. Avoid pitfalls when installing the VSCode extension I will skip the installation steps and go straight to the official getting-started guides: VS Code IDE Quick Start, Quick Installation Guide. But watch out for the following points: If you have enough space on your C drive, do not bother configuring things manually — let the extension install everything to the C drive automatically; save yourself the hassle. As long as either the code or the developer can run, it is fine. When installing, do not pick Github for Select download server; it is slow in China. The extension uses pip during installation, but pip’s official index is unusable in China, so you need to switch to a mirror manually. The command: 1 2 pip install pip -U pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple An error interrupts the extension installation and you need to reinstall, but the previously installed files remain, causing a “file exists” error. Go to the user directory, i.e. %HOMEPATH%\esp, and delete the esp-idf folder. Reinstall and it succeeds in one go. If you use it on multiple devices and have VSCode sync enabled, be sure to enable ignore sync for the 6 configuration parameters in the extension’s settings. For the parameters and reasons, see the Issue I filed: Extension config modified incorrectly due to VSCode sync. 2. Usage notes Just read the official docs: ESP-IDF VS Code extension tutorial.