Function esp_idf_sys::gpio_get_level

pub unsafe extern "C" fn gpio_get_level(gpio_num: gpio_num_t) -> c_int

@brief GPIO get input level

@warning If the pad is not configured for input (or input and output) the returned value is always 0.

@param gpio_num GPIO number. If you want to get the logic level of e.g. pin GPIO16, gpio_num should be GPIO_NUM_16 (16);

@return - 0 the GPIO input level is 0 - 1 the GPIO input level is 1