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zephyr
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Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
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zephyr/tests/drivers/gpio/gpio_basic_api
Nhut Nguyen 16c77ba448
drivers: gpio: Add support for RZ/A3UL 		4 months ago
..
boards drivers: gpio: Add support for RZ/A3UL 4 months ago
dts/bindings yamllint: indentation: fix files in tests/ 3 years ago
socs tests: esp32c3: Add USB variant 6 months ago
src tests: gpio: basic_api: not use pull up if it is not supported 7 months ago
CMakeLists.txt cmake: increase minimal required version to 3.20.0 4 years ago
Kconfig test: gpio: gpio_basic_api: enhance the gpio test 9 months ago
README.txt
…
arduino_D2D3.overlay tests: gpio: gpio_basic_api: update customerized board list 9 months ago
arduino_D9D10.overlay tests: gpio: gpio_basic_api: update customerized board list 9 months ago
prj.conf tests: remove CONFIG_ZTEST_NEW_API in all tests 2 years ago
testcase.yaml tests: drivers: gpio: Enable board siwx917_rb4338a 5 months ago

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.