Make uf2conv.py available via pip

[galak]

By having this available via pip it makes it easier for people to use this in other projects and keep track as updates are made to support additional boards and such.

[mmoskal]

I would be happy for someone from community to take this on. I don't really know much about Python ecosystem.

Someone from Adafruit maybe? cc @ladyada

[ladyada]

one needs to register the package with pypi to have it available over pip, we couldn't do it on microsoft's behalf - but happy to give advice!

[brentru]

+1 for making this available via pip so we can easily include uf2conv it in Actions CI scripts instead of cloning this repo and navigating

[vkottler]

I added this code as a sub-command of yambs:

$ python -m venv venv
$ ./venv/bin/pip install yambs
...
$ ./venv/bin/mbs uf2conv --help
usage: mbs uf2conv [-h] [-b BASE] [-f FAMILY] [-o FILE] [-d DEVICE_PATH] [-l] [-c] [-D] [-w] [-C] [-i] [INPUT]

positional arguments:
  INPUT                 input file (HEX, BIN or UF2)

options:
  -h, --help            show this help message and exit
  -b BASE, --base BASE  set base address of application for BIN format (default: 0x2000)
  -f FAMILY, --family FAMILY
                        specify familyID - number or name (default: 0x0)
  -o FILE, --output FILE
                        write output to named file; defaults to "flash.uf2" or "flash.bin" where sensible
  -d DEVICE_PATH, --device DEVICE_PATH
                        select a device path to flash
  -l, --list            list connected devices
  -c, --convert         do not flash, just convert
  -D, --deploy          just flash, do not convert
  -w, --wait            wait for device to flash
  -C, --carray          convert binary file to a C array, not UF2
  -i, --info            display header information from UF2, do not convert

(usage is also here)

I split the code up a bit and had to do some refactoring to satisfy mypy/pylint/etc. CI for this project.

I'm very early into building this package (working on vkottler/yambs#5), but I have a Metro M4 Grand Central and stumbled upon this repository and issue.

I also added unit testing which hits most of the statements, but still had to # pragma: nocover a lot of code that deals with malformed-file error handling and USB storage device copying.

[vkottler]

Noting here because I'm going to make a behavioral change to my fork - the uf2conv command will write the output file to drive(s) that it finds connected by default, even if you don't specify -D / --deploy at the command-line.

Seems sane/convenient depending on the project and build setup, but I'm building UF2's for multiple boards, so this opens up the possibility to put a UF2 on the wrong board.

The tool just ought not to go updating firmware if -D / --deploy isn't specified.