STM32L432 Breakout

STM32L432 Breakout

Assembled STM32L432 Breakout Board V0.1

What is it?

This is a small (37x22mm) board with an STM32L432KC6 MCU, 3.3V regulator, reset button, power LED, user GPIO LED, SWD header USB connector and all I/O pins brought out to SIP headers suitable for use in a solderless breadboard. With this board one can easily prototype small ARM Cortex Lxx applications with minimum effort and expense.

What it isn't

This is not a full development system - you'll have to gather your own programming tools, power supply, I/O devices, etc. This is not an Arduino clone with all the low-level stuff already done for you. If you want to get by on the cheap you'll have to be familiar with setting up an ARM GCC toolchain as well as using a JTAG/SWD debugger.



Software Development

The STM32 family of parts are supported by a variety of commercial IDEs, all of which are available in low-cost or limited free versions from the ST website.

I prefer to use open-source tools so I've set up a development environment based on the GNU C compiler for ARM, available for free from the Launchpad project. For downloading to the target I use OpenOCD and the ST-Link V2 SWD interface that's available on most all of the inexpensive STM32 Discovery boards. To accelerate development I also use the STM32 Standard Peripheral Library as a starting point for my code and then optimize out the heavyweight functions as required. Links to all of these are here:

What can it do?

The STM32L432KC MCU is has excellent low power operating characteristics. I've got a home-grown bicycle computer project that couples this board with a low-res monochrome bitmapped LCD for realtime display of time, speed and distance. During operation it draws less than 1ma and when powered down it pulls only a few nano-amps.

STM32L432 Bicycle computer

Low-power Bicycle Computer based on STM32L432KC

Design Resources



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Eric Brombaugh

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