zephyr/tests/drivers/gpio/gpio_basic_api
Christopher Friedt cc537b5a3a tests: gpio_basic_api: support for emulated GPIO
This adds support for emmulated GPIO (CONFIG_GPIO_EMUL=y) and
additionally allows BOARD=native_posix and
BOARD=native_posix_64 to run the gpio_basic_api test suite.

Fixes #26477

Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
2020-12-27 18:15:33 +01:00
..
boards tests: gpio_basic_api: support for emulated GPIO 2020-12-27 18:15:33 +01:00
dts/bindings
src tests: gpio_basic_api: support for emulated GPIO 2020-12-27 18:15:33 +01:00
CMakeLists.txt tests: gpio_basic_api: support for emulated GPIO 2020-12-27 18:15:33 +01:00
README.txt
prj.conf
testcase.yaml

README.txt

GPIO 2-Pin Test
###############

This application tests the GPIO subsystem using a hardware configuration
where two GPIOs are directly wired together.  The test pins are
identified through a test-specific devicetree binding in the `dts/`
subdirectory, implemented for specific boards by overlay files in the
`boards/` directory.

For some boards `src/main.c` may also need to be extended to configure
the selected pins for use as GPIOs.

Only boards for which an overlay is present can pass this test.  Boards
without an overlay, or for which the required wiring is not provided,
will fail with an error like this:

    Validate device GPIO_0
    Check GPIO_0 output 2 connected to input 3
    FATAL output pin not wired to input pin? (out high => in low)

No special build options are required to make use of the overlay.