modm: Moduler Object-Oriented Development for Microcontrollers

modm (Modular Object-oriented Development for Microcontrollers) is a C++14 framework built by Niklas Hauser and Fabian Grief. The modm project uses vendor-provided chip data with a library builder, enabling modm to automatically generate startup code, chip-specific drivers, external drivers, and BSPs for your platform. Since modm provides a portable HAL, you can easily migrate your software from one processor to another supported processor with no effort.

modm provides a framework which is suitable for bare-metal systems ranging from the ATtiny to a 32-bit ARM Cortex-M. The HAL features no memory allocations, low RAM consumption, and lightweight stack-less threads. The framework also provides useful algorithms suitable for bare-metal systems, as well as drivers for a wide variety of SPI and I2C peripherals. Multitasking is supported through protothreads, a stackless threading implementation targeted for memory constrained systems - each task only requires 2 bytes!

modm is well-tested, featuring 64 test groups with 343 test cases and over 4000 assertions. While the HAL is not fully tested in an automated manner, a variety of example hardware projects are regularly checked by the CI server.

The modm framework currently supports ~1350 AVR and ARM Cortex-M microcontrollers from Atmel, ST, and NXP. If you are using a processor from of those vendors, modm can provide your team with a stable foundation of drivers and the advantage of being able to quickly migrate your software to another processor.

Further Reading

For more on modm: