Function gpio_init

pub unsafe extern "C" fn gpio_init(
    pin: gpio_t,
    mode: gpio_mode_t,
) -> c_int

@brief Initialize the given pin as general purpose input or output

When configured as output, the pin state after initialization is undefined. The output pin’s state should be untouched during the initialization. This behavior can however not be guaranteed by every platform.

@param[in] pin pin to initialize @param[in] mode mode of the pin, see @c gpio_mode_t

@return 0 on success @return -1 on error