Use the checkpatch.pl included with Zephyr to perform the check.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Changed boards to be specified by their normalized names.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Modify to use west.yml included in the PR version.
Accordingly, the initialization process has been changed.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Added cmsis_6 to the repository in line with the update of Zephyr.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Apply newest zephyr version

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Get the variant name (NORMALIZED_BOARD_TARGET) from the Zephyr build
system as early as possible. This allows to have per-target build
directories.

Note that a bug with the shield specifiers does not currently allow to
reuse the same build directory multiple times.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
Co-authored-by: Luca Burelli <l.burelli@arduino.cc>

Since Arduino's `delayMicroseconds` is implemented as a busy loop,
we change it to using `k_busy_wait` to improve compatibility.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Reformatting indentation for `delay` and `millis`.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Since the general Arduino implementation does not check the GPIO
direction, this check has been removed to improve compatibility.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

The PWM index range check processing was performed after the index
was referenced, so it was now performed first.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

If gpio is not initialized, the pulseIn function will terminate
without running the timer.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Added a comment because it was difficult to understand
where the namespace ends.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Fix an issue where the reference location for the interrupt
handler was a bit mask instead of an index value.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
[DG: tweaked commit message]
Signed-off-by: Dhruva Gole <d-gole@ti.com>

Improved to align more closely with the standard Arduino implementation.

- Eliminated the end timer and used counting to determine the end.
- Improved to handle infinity correctly.
- Added a guard to prevent the timeout value from reaching 0.
- Set the GPIO value to 0 when the timer starts.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Take inspiration from the Arduino's fork [1] to improve the
CI for building and testing samples in the project by using
the ci-base zephyr image to save on size.

Use the new $MODULE_PATH to specify paths in the
setup stages.

[1] https://github.com/arduino/ArduinoCore-zephyr/blob/main/.github/workflows/build.yml

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Uses the HWMv2 canonical board name to determine paths under variants.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Disables processing when CONFIG_ARDUINO_API is disabled so that checking
the existence of variants does not work when this API is not used.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>