ulab is a numpy-like array manipulation library for micropython and circuitpython.
The module is written in C, defines compact containers for numerical
data, and is fast. The library is a software-only standard micropython user module,
i.e., it has no hardware dependencies, and can be compiled for any platform.
The float implementation of micropython (float, or double) is automatically detected.
Documentation can be found under https://micropython-ulab.readthedocs.io/en/latest/.
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.
It is also included in most development builds of CircuitPython for SAMD51 and nRF microcontrollers.
If you want to try the latest version of ulab on micropython, 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 this step 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. If your target is unix, you don't need to specify the BOARD parameter.
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.