eCosPro® Reference Manual
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# GPIO

## Name

GPIO -- General purpose I/O

## GPIO functions

As well as hardware definitions, the file `<cyg/hal/hal_ixp425.h>` provides a set of macros to assist GPIO manipulation:

    HAL_GPIO_OUTPUT_ENABLE(line)
    HAL_GPIO_OUTPUT_DISABLE(line)
    HAL_GPIO_OUTPUT_SET(line)
    HAL_GPIO_OUTPUT_CLEAR(line)

As described earlier, HAL support already exists for handling GPIO lines configured as interrupts.

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