Deep Dive w/Scott: CircuitPython 7.0.0 & GitHub Actions #adafruit
24Join Scott as he answers questions and talks about the 7.0.0 release. Visit the Adafruit shop online - http://www.adafruit.com
0:00 Hellos and getting started
0:02:38 hello everyone
0:06:32 CP 7.0.0 release candidate 1 - https://github.com/adafruit/circuitpython/releases/tag/7.0.0-rc.1
0:07:00 (est) deepsleep is still faked on the ESP32-S2 when USB is connected
0:08:04 additions since since 6.3.0 and fixes and enhancements
0:09:50 speaking of RC, there's 4 boards added in the last couple of days that don't have board.board_id I propose to PR that after (or before ?) the Lolin S2 Mini fix is merged maybe (and add __name__ while I'm there)
0:10:28 Can you control board frequency within CP?
0:11:50 __ double underscore
0:12:10 update documents live to match release notes :-) for EPaperDisplay
0:16:18 is there documentation on how to add a board that could be updated on github or is it only in the learn guides ? https://learn.adafruit.com/how-to-add-a-new-board-to-circuitpython/customizing-the-board-files
0:17:12 So looking at this eInk display https://www.adafruit.com/product/4197 I don't see anything about partial updates -- is that a limitation of the display/controller, or CP?
0:19:35 add collaborators to forks on an organization github repository (UM)
0:21:03 if you are worried about power saving, get a power analyzer https://www.adafruit.com/product/5048
0:23:55 Filling up flash - hunting for bytes - viewing hex- Q-strings linker tricks https://github.com/adafruit/circuitpython/pull/5284/files
0:28:35 - linker optimization: join common suffixed strings
0:29:30 - consider merging pointers in region by storing offsets - hard :-)
0:30:50 - could save qstr ram
0:31:15 linker - SORT_BY_ALIGNMENT (eliminate *fill* ) 185 fills times 2 bytes
0:33:13 linker SORT_BY_NAME
0:37:25 CIRCUITPY_PRECOMPUTE_QSTR_ATTR ( when there is more RAM than Flash )
0:41:00 What is a Q String https://docs.micropython.org/en/latest/develop/qstr.html
0:43:45 Micropython 1.17 https://github.com/micropython/micropython/releases/v1.17
0:46:25 Wii Balance board (late night project :-) )
0:46:52 github actions ( micropython updated )
0:48:00 earlier Deep dive xmissions had visual a lot more detailed info. Do you use a j-link device or so?
0:49:10 Is there any support for parallel connected display controllers? I don't see it but only just started looking
0:50:00 Github actions
0:51:40 MP builds all boards in a single job
0:51:58 CP builds boards in parallel
0:53:05 CP runs all tests first ( build.yml graph structure )
0:54:15 changes could save a lot of compute power
0:57:10 Introduction to GitHub Actions https://docs.github.com/en/actions/learn-github-actions/introduction-to-github-actions
0:58:30 API reference YAML syntax for workflows https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions
0:58:50 Events that trigger workflows https://docs.github.com/en/actions/reference/events-that-trigger-workflows
1:01:00 repository_dispatch
1:04:40 workflow_run
1:05:36 repository dispatch event
1:07:00 jobs .if / Context an expression syntax
1:08:30 matrix
1:09:00 needs
1:12:08 Question to be answered: how to enumerate all the files in git that changed
1:12:45 needs.job id.output
1:15:50 actions output values (set-output)
1:23:15 jobs.job_id.strategy.matrix
1:26:10 using environment variables
1:28:45 start some experiments
1:32:15 “JSON was in the matrix :-) “ passing JSON from outputs to tests
1:36:25 connect step output to job output
1:38:50 fish console ( for windows? ) mcfly
1:41:00 fish, starship, and exa diversions… :-)
1:45:30 Paths Changes Filter
1:47:00 “act” run github actions locally https://code.dblock.org/2021/06/15/running-github-actions-locally-using-act.html
1:49:38 get a list of all the changed files
1:52:55 given our context - what changed
1:59:30 we don’t need to be perfect, just have a robust fallback
2:04:50 Any recommendations for new CP users?
2:07:07 prepare to “call it” a day
2:08:04 have a great weekend, taking Monday off, CP Monday meetings move to Tuesday
2:08:50 what about commits that add a board?
2:09:21 chats continue on discord
2:10:36 pet the cat, and sign off
2:11:28 - freeze
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