[Snek] [keith-packard/snek] bc46d4: Add pi example

[Keith Packard]

  Branch: refs/heads/main
  Home:   https://github.com/keith-packard/snek
  Commit: bc46d402d874109db8c33303bc62137517473dd3
      https://github.com/keith-packard/snek/commit/bc46d402d874109db8c33303bc62137517473dd3
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-21 (Thu, 21 Nov 2024)

  Changed paths:
    A examples/pi.py

  Log Message:
  -----------
  Add pi example

This computes pi with random numbers

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: 38c42d88eba045304d19586d33e378b33fafa569
      https://github.com/keith-packard/snek/commit/38c42d88eba045304d19586d33e378b33fafa569
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-21 (Thu, 21 Nov 2024)

  Changed paths:
    M ports/duemilanove/Makefile
    M snek-builtin.py
    M snek.defs
    M test/pass-math.py
    M test/pass-op.py
    M test/pass-random.py
    M test/pass-trailing-comma.py

  Log Message:
  -----------
  Add math, random and time names to global namespace (by default)

Add '--global' parameters to snek-builtin.py to match namespaces from
builtin function names, removing those namespaces so that the names
appear in the global namespace. Use '--alias' to also leave the names
in their original namespace for compatibility with existing code.

By default, the math, time and random namespaces aliased.

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: b8ff4188c5dadddc177b22a6e01968fd7600f095
      https://github.com/keith-packard/snek/commit/b8ff4188c5dadddc177b22a6e01968fd7600f095
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-21 (Thu, 21 Nov 2024)

  Changed paths:
    M README.md
    M doc/lessons/lesson-1/lesson-1-snekboard.adoc
    M doc/lessons/lesson-2/lesson-2-line-bug.adoc
    M doc/lessons/lesson-3/bumper-car.py
    M doc/lessons/lesson-3/lesson-3-bumper-car.adoc
    M doc/snek.adoc
    M examples/badshuffle.py
    M examples/blink.py
    M examples/goodshuffle.py
    M examples/hanoi.py
    M examples/morse.py
    M examples/neopixel.py
    M examples/neopixels.py
    M examples/servo-car.py
    M examples/snek-bsd.py
    M examples/snek-car.py
    M examples/snek.py
    M ports/snekboard/snek-board-test.py

  Log Message:
  -----------
  Update examples and docs to reflect removal of namespaces

Fix all of the code to remove math., time. and random.

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: e6e2265d1770102dcf2d8eb6ff53059a668dd1e7
      https://github.com/keith-packard/snek/commit/e6e2265d1770102dcf2d8eb6ff53059a668dd1e7
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-22 (Fri, 22 Nov 2024)

  Changed paths:
    M chips/atmega/snek-atmega-time.c
    M ports/nano-every/snek-nano-every.c

  Log Message:
  -----------
  chips/atmega: Switch ATmega4809 clock to TCB2

TCA0 is way too useful to be stuck as the clock source. Use TCB2
instead.

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: f48b7e5a964d3ec8523a2afae0d7a8592b062f80
      https://github.com/keith-packard/snek/commit/f48b7e5a964d3ec8523a2afae0d7a8592b062f80
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-22 (Fri, 22 Nov 2024)

  Changed paths:
    M ports/nano-every/Makefile
    M ports/nano-every/snek-nano-every.c

  Log Message:
  -----------
  ports/nano-every: Implement tone and tonefor

Outputs tones on D5, just like other devices.

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: a80d5640ff4e3a6c5f7f568121993dcfd7a6bd56
      https://github.com/keith-packard/snek/commit/a80d5640ff4e3a6c5f7f568121993dcfd7a6bd56
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-22 (Fri, 22 Nov 2024)

  Changed paths:
    M chips/samd21/snek-gpio.c

  Log Message:
  -----------
  samd21: Use tone(0) in tonefor

off() doesn't work here.

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: c382070f359f83caeb245920d897fab1399b1323
      https://github.com/keith-packard/snek/commit/c382070f359f83caeb245920d897fab1399b1323
  Author: Keith Packard <keithp at keithp.com>
  Date:   2024-11-23 (Sat, 23 Nov 2024)

  Changed paths:
    M chips/atmega/snek-328p.builtin
    M ports/duemilanove/Makefile
    M ports/lilypad/Makefile
    M ports/uno/Makefile

  Log Message:
  -----------
  chips/atmega: Adjust atmega328p memory spaces

Reserve 192 bytes for stack. Shrink the value and vm stacks to make
room. This avoids stack overflows.

Signed-off-by: Keith Packard <keithp at keithp.com>


Compare: https://github.com/keith-packard/snek/compare/746d0c2943c4...c382070f359f

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