Building and Deploying MicroFMU on ESP32

Overview

This guide explains how to compile MicroPython with MicroFMU for ESP32 and deploy it to the microcontroller.

Prerequisites

• ESP32 board

• Installed ESP-IDF toolchain

• MicroPython source code (micropython_dir set correctly)

• USB serial drivers for ESP32

Steps

1. Navigate to the ESP32 port directory

   cd "$micropython_dir/ports/esp32"
   

2. Initialize ESP-IDF and set environment variables

   . $HOME/esp/esp-idf/export.sh
   

3. Compile MicroPython with MicroFMU

   make submodules
   make USER_C_MODULES=$micropython_dir/MicroFMU-library/micropython.cmake
   

4. Flash MicroPython onto ESP32

   make erase
   make deploy USER_C_MODULES=$micropython_dir/MicroFMU-library/micropython.cmake
   

5. Run FMU Simulation on ESP32

   Connect via serial and run:

   >>> import ufmu as fmu
   >>> simulation = fmu.setup_simulation(0, 3, 0.1)
   >>> for step, time, h, _, v, _, g, e in simulation:
   ...     print(time, h)