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Supported for all SAMD51 devices and SAMD21 with external flash.  For
interrupt events, IRQ_RX and IRQ_TXIDLE are provided.

IRQ_RX is called for every received byte.  This may not be useful for high
data rates, but can be used to build a wrapper class providing an
IRQ_RXIDLE event or to signal just the first byte of a message.

IRQ_TXIDLE is called only when messages are longer than 5 bytes and
triggers when still 5 bytes are due to be sent.

The SAMD hardware does not support implementing IRQ_RXIDLE.
Signed-off-by: robert-hh <robert@hammelrath.com>

Supported trigger names: IRQ_RXIDLE, IRQ_TXIDLE, IRQ_BREAK

- IRQ_RXIDLE: The handler for IRQ_RXIDLE is called reliably 31 UART bit
  times after the last incoming data.

- IRQ_TXIDLE: This IRQ is triggered after at least >5 characters are sent
  at once.  It is triggered when the TX FIFO falls below 4 elements.  At
  that time, up to 5 bytes may still be in the FIFO and output shift
  register.

- IRQ_BREAK: The IRQ triggers if a BREAK state is detected at RX.
  Properties & side effects:
  - After a BREAK, a valid character must be received before another break
    can be detected.
  - Each break puts a 0xff character into the input buffer.

The irq.flags() value is cleared only with a new wanted event.  Do not
change the flags otherwise.
Signed-off-by: robert-hh <robert@hammelrath.com>

Not just the domain name.  This gives better HTTP 1.0 examples if someone
wants to copy them.
Signed-off-by: Damien George <damien@micropython.org>

`ssl.wrap_socket()` is deprecated in CPython, so use `SSLContext` instead,
so the example is a good example to copy.
Signed-off-by: Damien George <damien@micropython.org>

The main changes here are to pass the address family and socket type to
`getaddrinfo()`, and then use the result of the address lookup when
creating the socket, so it has the correct address family.

This allows both IPv4 and IPv6 to work, because the socket is created with
the correct AF_INETx type for the address.

Also add some more comments to the examples to explain what's going on.

Fixes issue #15580.
Signed-off-by: Damien George <damien@micropython.org>

Currently, the qemu-arm (and qemu-riscv) port has two build modes:
- a simple test that executes a Python string; and
- a full test that uses tinytest to embed all tests within the firmware,
  then executes that and captures the output.

This is very different to all the other ports.  A difficulty with using
tinytest is that with the large number of tests the firmware overflows its
virtual flash size.  It's also hard to run tests via .mpy files and with
the native emitter.  Being different to the other ports also means an extra
burden on maintenance.

This commit reworks the qemu-arm port so that it has a single build target
that creates a standard firmware which has a REPL.  When run under
qemu-system-arm, the REPL acts like any other bare-metal port, complete
with soft reset (use machine.reset() to turn it off and exit
qemu-system-arm).

This approach gives many benefits:
- allows playing with a REPL without hardware;
- allows running the test suite as it would on a bare-metal board, by
  making qemu-system-arm redirect the UART serial of the virtual device to
  a /dev/pts/xx file, and then running run-tests.py against that serial
  device;
- skipping tests is now done via the logic in `run-tests.py` and no longer
  needs multiple places to define which tests to skip
  (`tools/tinytest-codegen.py`, `ports/qemu-arm/tests_profile.txt` and also
  `tests/run-tests.py`);
- allows testing/using mpremote with the qemu-arm port.

Eventually the qemu-riscv port would have a similar change.

Prior to this commit the test results were:

    743 tests ok.  (121 skipped)

With this commit the test results are:

    753 tests performed (22673 individual testcases)
    753 tests passed
    138 tests skipped

More tests are skipped because more are included in the run. But overall
more tests pass.
Signed-off-by: Damien George <damien@micropython.org>

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

So multiple boards can be built at once.
Signed-off-by: Damien George <damien@micropython.org>

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

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

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

With this change, the zephyr port is tested against the standard test suite
via the following scheme:
- the zephyr port is built with the `qemu_cortex_m3` board and the
  `prj_minimal.conf` configuration
- `qemu-system-arm` runs `zephyr.elf`
- the zephyr console is redirected to a pts/pty
- `tests/run-tests.py` is run in bare-metal mode against the pts/pty device

This allows testing the zephyr port as though it were a physical board
attached over a serial port.
Signed-off-by: Damien George <damien@micropython.org>

It needs to be at least this big for `tools/pyboard.py` to work, which is
used (among other things) by `tests/run-tests.py`.
Signed-off-by: Damien George <damien@micropython.org>

Commit f573e73b rewored the zephyr port to
build MicroPython as a cmake target, and since that commit the
`make-bin-testsuite` helper script no longer works (it requires a Makefile)
and hence the tinytest test framework can no longer be run.

Instead of fixing this, remove the option to use tinytest.  Boards running
zephyr can use the standard `tests/run-tests.py` script to run tests in the
usual way.
Signed-off-by: Damien George <damien@micropython.org>

Both of these tests require slice to be enabled.
Signed-off-by: Damien George <damien@micropython.org>

The pts line printed by qemu-system-arm goes to stdout, not stderr.

Redirect stderr to stdout in case other tools do print to stderr.
Signed-off-by: Damien George <damien@micropython.org>

Make the CI builds compile the public API as C++ to catch accidental
introductions of incompatible code.
Signed-off-by: stijn <stijn@ignitron.net>

This adds support for the WIZNET5K nic to use IPv6 with the LWIP stack.
Additionally, if LWIP_IPV6 is disabled, the device is configured to drop
all IPv6 packets to reduce load on the MCU.
Signed-off-by: Jared Hancock <jared@greezybacon.me>

Small code size and binary size optimisation for the fix merged in
4d6d8498.

This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Currently for samd21 some features are disable because of limited memory.
With the ability to trade firmware and filesystem space, a user may wish to
selectively enable some of these features.  This change allows them to be
enabled in board `mpconfigboard.h` or on the build command line for
example.  The selectively enable functions are: MICROPY_PY_FRAMEBUF,
MICROPY_PY_SELECT, MICROPY_PY_ONEWIRE and MICROPY_PY_ASYNCIO.
Signed-off-by: Rick Sorensen <rick.sorensen@gmail.com>

When MicroPython is used as a submodule and built from the containing
project, e.g. for the embed port, `make submodules` fails because it goes
looking for the sub-sub-module paths in the outer repository instead of in
the micropython repository. Fix this by invoking git inside the micropython
submodule.
Signed-off-by: Christian Walther <cwalther@gmx.ch>

The original OSPIFLASH settings in the `mpconfigboard.h` contained some
mistakes that prevented the firmware from compiling.  These are now
corrected and the firmware can be built with support for OSPI flash.

Note: external storage in OSPI flash is not yet configured on this board.
Signed-off-by: nspsck <teng.jiang94@gmail.com>

Added a #if-block to `system_stm32.c` to check whether
`MICROPY_HW_RCC_OSPI_CLKSOURCE` is defined.  If that is the case, the
clock source for the OSPI will be changed to the specified source.
Signed-off-by: nspsck <teng.jiang94@gmail.com>

Added a if-statement to `octospi.c` to detect if the targeted MCU is one of
the STM32H7 series.  If that is the case, another set of variables are used
for the `mp_hal_pin_config_alt_static_speed()` function, as well as for
register `OCTOSPI1->CR`.  This allows the STM32H723 and STM32H7B3 series
MCU to use octo-spi flash like the STM32H573 series MCU.
Signed-off-by: nspsck <teng.jiang94@gmail.com>

Signed-off-by: Andrew Leech <andrew.leech@planetinnovation.com.au>

There is a gap in support for the PVD interrupt on STM32WBxx and STM32WLxx.
This has been tested on NUCLEO_WB55 with the example code:

    from pyb import Pin, ExtInt

    def callback(line):
        print(line)

    PVD = 16
    exti = ExtInt(PVD, ExtInt.IRQ_RISING_FALLING, Pin.PULL_DOWN, callback)

    exti.swint()

Before this commit the CPU locks up as soon as the final line is run.
After this commit it prints "16".

Fixes issue #15548.
Signed-off-by: Andrew Leech <andrew.leech@planetinnovation.com.au>

There are some missing images at MicroPython Downloads.  This commit
attempts to resolve all the current issues, and add product URLs where
missing.
Signed-off-by: Matt Trentini <matt.trentini@gmail.com>

IDF 3 builds are very old now (it seems like the last successful builds are
from 2021), and the current IDF 5 is stable.  So remove IDF 3 variants.
Signed-off-by: Matt Trentini <matt.trentini@gmail.com>

There is no such variant.
Signed-off-by: Matt Trentini <matt.trentini@gmail.com>

By default, the peripheral clock for UART and SPI is set to 48 MHz and will
not be affected by the MCU clock change.  This can be changed by a second
argument to `machine.freq(freq, peripheral_freq)`.  The second argument
must be either 48 MHz or identical with the first argument.

Note that UART and SPI baud rates may have to be re-configured after
changing the MCU clock.
Signed-off-by: robert-hh <robert@hammelrath.com>

As a side effect, the peripheral clock will be set to 48Mhz and both UART
and I2C will not be affected by CPu speed changed using `machine.freq()`.

With the change the UART baud rate range is 50 to 3_000_000.
Signed-off-by: robert-hh <robert@hammelrath.com>

If `MICROPY_PY_THREAD` is set to 0 (ie: a user C module wishes to use core1
exclusively) then the test of `core1_entry` would fail to compile with an
"undeclared identifier" error.  Fix it by wrapping in `MICROPY_PY_THREAD`.
Signed-off-by: Phil Howard <phil@gadgetoid.com>

Telling that subseconds is not supported and returns always 0.  This was
changed in 913f9ad5.
Signed-off-by: robert-hh <robert@hammelrath.com>

Preventing already pending IRQs to fire when not expected.
Signed-off-by: robert-hh <robert@hammelrath.com>

Signed-off-by: robert-hh <robert@hammelrath.com>

The RV32 emitter used an additional temporary register, as certain code
sequences required extra storage.  This commit removes its usage in all
but one case, using REG_TEMP2 instead.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

The RV32 emitter sometimes generated short load opcodes even when it
was not supposed to.  This commit fixes an off-by-one error in its
offset eligibility range calculation and corrects one case of offset
calculation, operating on the raw label index number rather than its
effective offset in the stack (C.LW assumes all loads are
word-aligned).
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

The RV32 emitter always scheduled short jumps even outside the emit
compiler pass.  Running the full test suite through the native emitter
instead of just the tests that depend on the emitter at runtime (as in,
`micropython/native_*` and `micropython/viper_* tests`) uncovered more
places where the invalid behaviour was still present.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

Skip whitespace characters between pairs of hex numbers.
This makes `bytes.fromhex()` compatible with cpython.

Includes simple test in `tests/basic/builtin_str_hex.py`.
Signed-off-by: Glenn Moloney <glenn.moloney@gmail.com>