STM32 Arduino Lua

This Arduino library provides the lua 5.3.2 ( release ) scripting engine for STM32 sketches. This allows dynamic execution of Lua code on the Arduino without having to compile and flash a new firmware.

Along with the Lua 5.3.2 Core the following Lua standard libraries are included:

• base (print(), tostring(), tonumber(), etc.)
• math
• table (insert(), sort(), remove(), ...)
• string (len(), match(), ...)

Arduino IDE Library example: HelloWorld.ino

#include <LuaWrapper.h>

LuaWrapper lua;

void Lua_output(const char *s) {
  Serial.print(s);
}

void setup() {
  Serial.begin(115200);
  delay(300);
  String script = String("print('Hello world!')");
  Serial.println(lua.Lua_dostring(&script));
}

void loop() {
}

Resources Used (HelloWorld.ino)

STM32H743ZI2: Sketch uses 120672 bytes (5%) of program storage space. Maximum is 2097152 bytes. Global variables use 1896 bytes (0%) of dynamic memory, leaving 522392 bytes for local variables. Maximum is 524288 bytes.

The Lua Language:

Lua 5.3 Reference Manual

Board Compatibility

The library shall be compatible will all STM32Fx that features enough memory. This library is a concept of proof; it is intended for demo purpose and lack an Arduino wrapper with common functions such as digitalWrite.

References:

• https://github.com/sfranzyshen/ESP-Arduino-Lua
• https://github.com/FASTSHIFT/Lua-For-STM32