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Refactors the zephyr build infrastructure to build MicroPython as a
cmake target, using the recently introduced core cmake rules.

This change makes it possible to build the zephyr port like most other
zephyr applications using west or cmake directly. It simplifies building
with extra cmake arguments, such as specifying an alternate conf file or
adding an Arduino shield. It also enables building the zephyr port
anywhere in the host file system, which will allow regressing across
multiple boards with the zephyr twister script.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

Removes zephyr port build files that aren't being used anymore.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

Disables frozen source modules in the zephyr port. They are deprecated
in the makefile rules and not implemented in the new cmake rules.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

The core cmake rules use custom commands to invoke qstr processing
scripts. For the zephyr port, it's possible that list arguments to these
commands may contain generator expressions, therefore we need to expand
them properly.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

Updates the zephyr port build instructions and CI to use the latest
zephyr release tag.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

This allows customising which features can be enabled in a frozen library.

e.g. `include("path.py", extra_features=True)`

in path.py:

    options.defaults(standard_features=True)

    if options.standard_features:
        # freeze standard modules.
    if options.extra_features:
        # freeze extra modules.
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>

This is a MicroPython-extension that allows for code running in IRQ
(hard or soft) or scheduler context to sequence asyncio code.
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>

On error, the handle is only available on err->att_handle rather than
in attr->handle used in the non-error case.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

The underlying OS (the ESP-IDF) uses it's own internal errno codes and so
it's simpler and cleaner to use those rather than trying to convert
everything to the values defined in py/mperrno.h.

The ESP-IDF has its own errno codes which should propagate out to the user.

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

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

ESP-IDF v4.0.2 is still supported.
Signed-off-by: Damien George <damien@micropython.org>

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

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

BLE was enabled by default on all boards in the existing make build.
Signed-off-by: Damien George <damien@micropython.org>

IDF v3 is no longer supported with the move to cmake.
Signed-off-by: Damien George <damien@micropython.org>

It's now replaced by cmake/idf.py.  But a convenience Makefile is still
provided with traditional targets like "all" and "deploy".
Signed-off-by: Damien George <damien@micropython.org>

This makes no functional change.  See similar commit
9aa58cf8Signed-off-by: Damien George <damien@micropython.org>

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

This commit adds support for building the esp32 port with cmake, and in
particular it builds MicroPython as a component within the ESP-IDF.  Using
cmake and the ESP-IDF build infrastructure makes it much easier to maintain
the port, especially with the various new ESP32 MCUs and their required
toolchains.
Signed-off-by: Damien George <damien@micropython.org>

These allow a port to use cmake natively instead of make.
Signed-off-by: Damien George <damien@micropython.org>

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

This allows changing the baudrate of the UART without reinitialising it
(reinitialising can lead to spurious characters sent on the TX line).
Signed-off-by: Damien George <damien@micropython.org>

Matches CPython behavior.

Fixes #6686

Signed-off-by: Brianna Laugher <brianna.laugher@gmail.com>

This is needed for TinyUSB to process USB device IRQs.

Related to #6325.
Signed-off-by: Damien George <damien@micropython.org>

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

On i.MX the SysTick IRQ cannot wake the CPU from a WFI so the CPU was
blocked on WFI waiting for USB data in mp_hal_stdin_rx_chr() even though it
had already arrived (because it may arrive just after calling the check
tud_cdc_available()).  This commit fixes this problem by using SEV/WFE to
indicate that there has been a USB event.

The mp_hal_stdout_tx_strn() function is also fixed so that it doesn't
overflow the USB buffers.
Signed-off-by: Damien George <damien@micropython.org>

So that all MicroPython ports that use tinyusb use the same version.  Also
requires fewer submodule checkouts when building rp2 along with other ports
that use tinyusb.
Signed-off-by: Damien George <damien@micropython.org>

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

Includes support for RP2040.
Signed-off-by: Damien George <damien@micropython.org>

Synchronous events work on stm32 and unix ports.
Signed-off-by: Damien George <damien@micropython.org>

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

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

So that BTSTACK can be enabled with SYNC_EVENTS.
Signed-off-by: Damien George <damien@micropython.org>