ulab is a numpy-like array manipulation library for micropython. The module is written in C, defines compact containers for numerical data, and is fast.
Documentation can be found under https://micropython-ulab.readthedocs.io/en/latest/ The source for the manual is in https://github.com/v923z/micropython-ulab/blob/master/docs/ulab-manual.ipynb, while developer help is in https://github.com/v923z/micropython-ulab/blob/master/docs/ulab.ipynb.
Firmware for pyboard.v.1.1, and PYBD_SF6 is updated once in a while, and can be downloaded from https://github.com/v923z/micropython-ulab/releases.
If you want to try the latest version of ulab, or your hardware is
different to pyboard.v.1.1, or PYBD_SF6, the firmware can be compiled
from the source by following these steps:
First, you have to clone the micropython repository by running
git clone https://github.com/micropython/micropython.git
on the command line. This will create a new repository with the name micropython. Staying there, clone the ulab repository with
git clone https://github.com/v923z/micropython-ulab.git ulab
If you don't have the cross-compiler installed, your might want to do that now, for instance on Linux by executing
sudo apt-get install gcc-arm-none-eabi
If that was successful, you can try to run the make command in the port's directory as
make BOARD=PYBV11 USER_C_MODULES=../../../ulab all
which will prepare the firmware for pyboard.v.11. Similarly,
make BOARD=PYBD_SF6 USER_C_MODULES=../../../ulab all
will compile for the SF6 member of the PYBD series. Provided that you managed to compile the firmware, you would upload that by running either
dfu-util --alt 0 -D firmware.dfu
or
python pydfu.py -u firmware.dfu
In case you got stuck somewhere in the process, a bit more detailed instructions can be found under https://github.com/micropython/micropython/wiki/Getting-Started, and https://github.com/micropython/micropython/wiki/Pyboard-Firmware-Update.