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ports/unix: Add embedded mode. #12807

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@smurfix smurfix commented Oct 26, 2023

Embedded mode means that

  • boot.py is executed, if present
  • the same REPL as on embedded systems is used that is, ^A switches to raw mode.

This change does not yet(?)

  • modify the terminal mode Workaround: wrap with stty raw; micropython -e …; stty -raw
  • support a restart via machine.reset()

@smurfix
ports/unix: Add embedded mode.
74003ed 
Embedded mode means that

* boot.py is executed, if present
* the same REPL as on embedded systems is used
  that is, ^A switches to raw mode.

This change does not yet(?)

* modify the terminal mode
  Workaround: wrap with `stty raw; micropython -e …; stty -raw`
* support a restart via `machine.reset()`

Signed-off-by: Matthias Urlichs <matthias@urlichs.de>
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jimmo commented Oct 26, 2023

Thanks. See also #12802 -- might be good to get that one in first then update this PR correspondingly?

@smurfix
ports/unix: Fix building without MICROPY_USE_READLINE.
139ba10 
Signed-off-by: Matthias Urlichs <matthias@urlichs.de>
@smurfix
docs/unix: Document the "-e" option.
eed0df3 
Signed-off-by: Matthias Urlichs <matthias@urlichs.de>
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smurfix commented Oct 26, 2023

Heh. Fun. Two people, one thought … I'll have a look at #12802.

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jimmo commented Oct 26, 2023 •
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Out of curiosity though... what is the meaning of boot.py on unix?

On the embedded ports, boot.py is about setting up filesystems in order to be able to find main.py, or any once-off configuration of peripherals that can't change at runtime (e.g. usb mode).

Is there some other precedent from CPython we could follow for the unix port? e.g. site ?

@jimmo jimmo mentioned this pull request Oct 26, 2023
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smurfix commented Oct 26, 2023

In my case boot.py is about setting up paths, pre-importing and assembling stub modules, and related hackery that's required for my micropython testcases so that they behave as if they're running on a "real" embedded system.

There are some other embedded-ish changes I'd like to add, e.g. mostly-restricting file system functions to the current directory.

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