ELM11

The ELM11 is a highly-configurable microcontroller board. Key features include:

• Executes Lua, from either:
  • REPL
    • There a standalone REPL for each CPU core.
  • Program(s) stored on the Flash
• Compile-time configurable hardware
  • For example, CPU frequency, supported I/O protocols, hardware module injection, etc. See Hardware Overlay for an overview of this functionality or Build Hardware Overlay to build your own hardware overlay.
• Run-time configurable hardware
  • For example, I/O protocol, I/O frequency, boot configuration, etc. See the ELM11 Datasheet or embLua OS documentation for more information.

Other features include:

• Support for standard digital I/O protocols, including:
  • GPIO, PWM, UART, SPI, I2C
• Interrupts, including:
  • GPIO level and transition
  • UART, SPI and I2C receive data
• Timers
• Watchdog
  • Hardware-based
• Hardware-acceleration of the Lua VM ^[1]
  • A document that provides a basic reference of the hardware-acceleration performance is available here.