“Bare Metal” STM32 Programming (2018)

The STM32 line of ARM Cortex-M microcontrollers are a fun way to get started with embedded programming. The nice thing about these chips is that they don’t require much setup, so you can start to learn about them bit by bit, starting with…

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The STM32 line of ARM Cortex-M microcontrollers are a fun way to get started with embedded programming. The nice thing about these chips is that they don’t require much setup, so you can start to learn about them bit by bit, starting with almost no code. And they are much more capable than the 8-bit processors used in many ‘Arduino’-type boards – some can run at over 400MHz, and they can have advanced peripherals up to and including simple graphics accelerators.

But in this tutorial, we will just learn the absolute minimum required to get a program running on one of the simpler STM32 chips. We’ll cover how to support multiple chips in a later post, but this example will use the STM32F031K6 as an example. ST makes an affordable ‘Nucleo’ development board with this chip, which costs just…

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