For whom is interested:
I have made a board definition for the STM32F407VGT6 based "CLICKER2" board of MikroElektronika and added a small board support package (bsp.py). It can be found under the clicker2 branch of my fork of micropython at @rolandvs.
The board features
- STM32F407VGT6 micro controller
- LTC3586-2 LiPo charger
- Two LEDs
- Two switches
- Reset switch
- Mini USB connector
- Two mikroBUS connectors where you can put small modules.
Have fun.
Roland