micropython

While fixing PR #4662 / issue #4657 it was found that PulseIn is not using the common_hal method of state machine construction. The common_hal version has more checks and would keep the functionality properly encapsulated. The displayio.ParallelBus could be used as a template on how to change this issue.

About this question, here is a unified reply.

We need to see this place where one is the definition and load the configuration.

https://github.com/sipeed/MaixPy/blob/master/components/micropython/port/builtin_py/board.py

If you don't provide the configuration, you won't get the concrete variable.

If it is SIPEED published hardware, the appropriate configuration is provided here.

htt

Micropython 1.17 introduces f-string support.

There are a LOT of places in firmware where using f-strings would be practical and make the code more readable. At some point we should mass-convert all format strings to f-string syntax.

The following MicroPython modules are not referenced in the docs:

• array
  • Upstream docs
• builtins
  • Upstream docs
• ucollections
  • Upstream docs
• gc
  • [Upstream docs](https://do