stm32f072 dev board with arduino nano alike pinout

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STM32F072 devboard featuring USB 2.0 full-speed, DFU Bootloader, USB-PD Phy, Arduino nano alike pinout and size.

HW v1.1 is finished and tested, v1.2 will be finished and tested soon. New features/changelog: BOM cost reduction by ~40%, PCB can be fully populated by JLCSMT, more efficient buck converter (PCB gets less warm at 20V), GND-hook for probing, Reset-Pin will be exposed as pad, power pads for 20V/5A

More documentation and firmware examples will be aviable soon (including pinout diagram).

You can build and flash the firmware via Arduino as described here.

Or you can generate a basic firmware, with HAL init and Makefile, with CubeMX. The binary can then be build with make and flashed with dfu-utils. To enter DFU mode, press and hold the Button while plugging in power.

$ make
$ dfu-util -a 0 -s 0x08000000:leave -D build/firmware.bin

This is a working USB-PD example using ChibiOS, a new voltage can be requested by pressing the Button.