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Jeff Epler 76f03a2bee
Make keypad select/poll'able for better async 
This allows a small wrapper class to be written
```py
class AsyncEventQueue:
    def __init__(self, events):
        self._events = events

    async def __await__(self):
        yield asyncio.core._io_queue.queue_read(self._events)
        return self._events.get()

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_value, traceback):
        pass

```
and used to just "await" the next event:
```py
async def key_task():
    print("waiting for keypresses")
    with keypad.KeyMatrix([board.D4], [board.D5]) as keys, AsyncEventQueue(keys.events) as ev:
        while True:
            print(await ev)
```

Because checking the empty status of the EventQueue does not enter
CircuitPython bytecode, it's assumed (but not measured) that this is
more efficient than an equivalent loop with an `await async.sleep(0)`
yield and introduces less latency than any non-zero sleep value.
2022-08-09 21:48:27 -05:00
.github fix name for macOS mpy-cross universal build 2022-07-28 18:14:32 -04:00
data ESP32 .bin only; update nvm.toml 2022-07-08 20:37:47 -04:00
devices/ble_hci Retrieve the BLE name from dotenv if available 2022-07-14 11:55:53 +02:00
docs Add ability to reserve psram 2022-08-03 16:19:40 -05:00
examples Fix all natmod tests to run on x64 2022-02-13 11:18:38 -06:00
extmod Pull in a fix for ulab on REPR_A builds (some broadcom builds) 2022-07-07 17:16:48 -05:00
frozen Merge pull request #6648 from pypewpew/stage-png 2022-07-27 11:02:48 -07:00
lib Merge pull request #5852 from jepler/floppy 2022-04-26 11:40:19 -04:00
LICENSES Add an explicit SPDX license file for ter-u12n. 2020-07-06 19:15:41 +01:00
locale Translated using Weblate (French) 2022-08-08 06:20:52 +02:00
logo Add license to some obvious files. 2020-07-06 19:16:25 +01:00
mpy-cross don't specify -sdk in Makefile.m1 for mpy-cross 2022-07-27 22:51:14 -04:00
ports add includes 2022-08-07 14:32:29 -04:00
py Merge branch 'main' into title_execution_status 2022-08-05 13:42:58 -07:00
shared Update shared/readline/readline.c 2022-07-26 11:39:18 -05:00
shared-bindings Make keypad select/poll'able for better async 2022-08-09 21:48:27 -05:00
shared-module Merge pull request #6667 from jepler/esp-reserve-heap-for-idf 2022-08-05 15:06:44 -04:00
supervisor Merge branch 'main' into title_execution_status 2022-08-05 13:42:58 -07:00
tests update expected results of help(modules) 2022-07-07 13:42:03 -05:00
tools Fix builds with displayio but not terminalio 2022-08-04 16:34:25 -07:00
.git-blame-ignore-revs top: Update .git-blame-ignore-revs for latest formatting commit. 2021-04-27 23:46:46 +10:00
.gitattributes Merge MicroPython 1.12 into CircuitPython 2021-05-03 14:01:18 -07:00
.gitignore refine stubs-building procedure 2021-06-22 08:59:05 -05:00
.gitmodules Merge pull request #6526 from xuhow/elecfreaks_picoed 2022-06-30 11:53:59 -07:00
.mailmap Add a .mailmap file to collate together multiple author entries. 2020-07-06 19:15:41 +01:00
.pre-commit-config.yaml Add neopixel support on PWM capable pins 2021-12-14 16:59:53 -08:00
.readthedocs.yml Fetch the submodules in readthedocs with ci_fetch_deps.py 2022-05-14 23:17:49 +02:00
.rosie.yml Add license to some obvious files. 2020-07-06 19:16:25 +01:00
ACKNOWLEDGEMENTS Merge MicroPython 1.12 into CircuitPython 2021-05-03 14:01:18 -07:00
ACKNOWLEDGEMENTS.license Add license to some obvious files. 2020-07-06 19:16:25 +01:00
BUILDING.md Correct typo 2022-07-05 12:03:04 -04:00
CODE_OF_CONDUCT.md Update CODE_OF_CONDUCT.md from source-of-truth repository. 2020-06-03 10:43:36 +01:00
conf.py list extensions instead of macros names ("bin,uf2" not BIN_UF2) 2022-07-26 18:15:59 +02:00
CONTRIBUTING.md Fix error 2020-10-26 23:36:54 +01:00
LICENSE LICENSE,docs: Update copyright year range to include 2022. 2022-01-06 15:50:14 +11:00
license.rst Improve docs and update to CircuitPython. 2017-01-05 16:20:46 -08:00
main.c Merge branch 'main' into title_execution_status 2022-08-05 13:42:58 -07:00
Makefile Add fetch-modules to make help for main makefile 2022-05-11 23:45:37 -04:00
MANIFEST.in-stubs refine stubs-building procedure 2021-06-22 08:59:05 -05:00
README.rst link to workflow page in docs. Capitalize "Workflow" 2022-07-01 13:57:32 -05:00
README.rst-stubs Actually reduce the README text for the stubs package 2021-06-24 13:41:01 -05:00
requirements-ci.txt build docs dynamically 2021-09-16 00:05:42 +05:30
requirements-dev.txt Update requirements-dev.txt 2022-07-27 18:28:01 +01:00
requirements-doc.txt add adafruit-circuitpython-typing to requirements-doc.txt 2022-02-27 00:06:40 -05:00
runtime.py Conditionalize LTO 2022-05-27 12:59:54 -07:00
setup.py-stubs use --long for describe in setup.py-stubs 2022-02-18 21:22:02 -05:00
WEBUSB_README.md Rename esp32s2 port to espressif 2021-09-13 16:44:55 -07:00

README.rst-stubs 

CircuitPython
=============

.. image:: https://s3.amazonaws.com/adafruit-circuit-python/CircuitPython_Repo_header_logo.png

|Build Status| |Doc Status| |License| |Discord| |Weblate|

`circuitpython.org <https://circuitpython.org>`__ \| `Get CircuitPython <#get-circuitpython>`__ \|
`Documentation <#documentation>`__ \| `Contributing <#contributing>`__ \|
`Branding <#branding>`__ \| `Differences from Micropython <#differences-from-micropython>`__ \|
`Project Structure <#project-structure>`__

**CircuitPython** is a *beginner friendly*, open source version of Python for tiny, inexpensive
computers called microcontrollers.

This package contains the "stubs", or type definitions for CircuitPython.  With some advanced
editors and other tools, this information can be identify TypeErrors, AttributeErrors, and other
problems before you deploy your code to a device and can even help autocomplete your code.

.. |Build Status| image:: https://github.com/adafruit/circuitpython/workflows/Build%20CI/badge.svg
   :target: https://github.com/adafruit/circuitpython/actions?query=branch%3Amain
.. |Doc Status| image:: https://readthedocs.org/projects/circuitpython/badge/?version=latest
   :target: http://circuitpython.readthedocs.io/
.. |Discord| image:: https://img.shields.io/discord/327254708534116352.svg
   :target: https://adafru.it/discord
.. |License| image:: https://img.shields.io/badge/License-MIT-brightgreen.svg
   :target: https://choosealicense.com/licenses/mit/
.. |Weblate| image:: https://hosted.weblate.org/widgets/circuitpython/-/svg-badge.svg
   :target: https://hosted.weblate.org/engage/circuitpython/?utm_source=widget