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Add a new board type for ESP32-C3 revision 3 and up that implement the USB
serial/JTAG port on pin 18 and 19.  This variant uses the USB serial for
programming and console, leaving the UART free.

- Pins 18 and 19 are correctly reserved for this variant.  Also pins 14-17
  are reserved for flash for any ESP32-C3 so they can't be reconfigured
  anymore to crash the system.
- Added usb_serial_jtag.c and .h to implement this interface.
- Interface was tested to work correctly together with webrepl.
- Interface was tested to work correctly when sending and receiving
  large files with ampy.
- Disconnecting terminal or USB will not hang the system when it's
  trying to print.

Signed-off-by: Fernando <fepegar@gmail.com>

Signed-off-by: Fernando <fepegar@gmail.com>

Saves 71 bytes of bytecode.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

This makes fill() about 7x faster (PYBV11 and PYBD_SF6) for the cost of +40
bytes of bytecode (or 120 bytes text).
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

* For boards a with reset switch, pressing twice resets into bootloader.
* Enabled by linking with the pico_bootsel_via_double_reset library.

Flash erase/program functions disable the XIP bit.  If any code runs from
flash at the same time (eg an IRQ or code it calls) it will fail and cause
a lockup.

This feature {x=} was introduced in Python 3.8 so needs a separate .exp
file to run on earlier Python versions.

See https://bugs.python.org/issue36817Signed-off-by: Damien George <damien@micropython.org>

This makes it work like --no-follow and --no-exclusive using a mutex group
and dest.  Although the current implementation with BooleanOptionAction is
neater it requires Python 3.9, so don't use this feature.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

You can set one or the other (or neither) but not both.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

The --no-exclusive flag was accidentally added to the mutex group in
178198a0.

The --soft-reset flag was accidentally added to the mutex group in
41adf178.

These flags can be specified independently to --[no-]follow so should not
be in that mutex group.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

This achieves a substantial performance improvement when rendering glyphs
to color displays, the benefit increasing proportional to the number of
pixels in the glyph.

The compiler was optimising this out already so it's a no-op change.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Saves ~1kiB.  Add comment to this effect to mpconfig.h.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Damien George <damien@micropython.org>

And using "-B" means mpy-cross is forcefully rebuilt, sometimes with
invalid CFLAGS_EXTRA options which makes the auto-build fail.
Signed-off-by: Damien George <damien@micropython.org>

Signed-off-by: Tobias Thyrrestrup <tt@LEGO.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Hand-written version for M0, and cycle-counter version for everything else.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

This is a generic API for synchronously bit-banging data on a pin.

Initially this adds a single supported encoding, which supports controlling
WS2812 LEDs.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

The sys.stdin.buffer and sys.stdout.buffer streams work just as well (and
are just as fast) as pyb.USB_VCP on stm32 devices, so there's no need to
have the USB_VCP specialisation code, which just adds complexity.

Also, on stm32 devices with both USB and UART (or other serial interface),
if something other than the USB_VCP port is used for the serial connection
then mpremote mount will not work because it will default to reading and
writing on USB_VCP instead of the other connected serial stream.

As part of this simplification, support for a second port as input is
removed (this feature was never exposed to the user).
Signed-off-by: Damien George <damien@micropython.org>

This was missed in 692d36d7.  It's not
strictly necessary as the GC will clean it anyway, but it's good to
pre-emptively gc_free() all the blocks used in lexing/parsing.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Replace `import socket as socket` with `import socket`.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

This fixes the rendering on library/index.rst.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Prevents the finaliser from being missed if there's a dangling reference
on the stack to one of the blocks for the files (that this test checks
that they get finalised).

See github.com/micropython/micropython/pull/7659#issuecomment-899479793
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

This compiler is unable to optimise out the giant strcmp match generated
by MP_MATCH_COMPRESSED.

See github.com/micropython/micropython/pull/7659#issuecomment-899479793
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Fixes issue #7631.
Signed-off-by: Damien George <damien@micropython.org>

Release the GIL while waiting for SPI transfers to complete to allow other
threads to make progress.

Fixes #7662.

To make machine.Signal work correctly (among other things).  The solution
is taken over from the rp2 port.

Signed-off-by: Philipp Ebensberger

This tests both sending indications/notifications from a server to
subscribed clients via gatts_write(...,send_update=True) and subscribing
from a client.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

This allows the write to trigger a notification or indication, but only to
subscribed clients. This is different to gatts_notify/gatts_indicate,
which will unconditionally notify/indicate.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>