Extending MicroPython in C

This chapter describes options for extending MicroPython in C. Note that it doesn’t aim to be a complete guide for developing with MicroPython. See the getting started guide for further information.

• MicroPython external C modules
  • Structure of an external C module
  • Basic example
  • Compiling the cmodule into MicroPython
  • Module usage in MicroPython
• MicroPython string interning
  • Compile-time QSTR generation
  • Run-time QSTR generation
• Native machine code in .mpy files
  • Supported features and limitations
  • Defining a native module
  • Minimal example
  • Compiling the module
  • Module usage in MicroPython
  • Further examples