https://github.com/WeActTC/WeAct_F411CE-MicroPython
Everything is OK when use stable version 1.13 of Micropython but I need newest daily version for my experiment.
git clone https://github.com/micropython/micropython.git
cd micropython
git submodule update --init
cd mpy-cross
make -j4
cd ../ports/stm32/boards
git clone https://github.com/WeActTC/WeAct_F411CE-MicroPython
cd ..
make BOARD=WeAct_F411CE-MicroPython -j4