Function gpio_pin_get

pub unsafe extern "C" fn gpio_pin_get(
    port: *const device,
    pin: u8,
) -> i32

@brief Get logical level of an input pin.

Get logical level of an input pin taking into account GPIO_ACTIVE_LOW flag. If pin is configured as Active High, a low physical level will be interpreted as logical value 0. If pin is configured as Active Low, a low physical level will be interpreted as logical value 1.

Note: If pin is configured as Active High, the default, gpio_pin_get() function is equivalent to gpio_pin_get_raw().

@param port Pointer to the device structure for the driver instance. @param pin Pin number.

@retval 1 If pin logical value is 1 / active. @retval 0 If pin logical value is 0 / inactive. @retval -EIO I/O error when accessing an external GPIO chip. @retval -EWOULDBLOCK if operation would block.