Function bt_le_ext_adv_update_param 

pub unsafe extern "C" fn bt_le_ext_adv_update_param(
    adv: *mut bt_le_ext_adv,
    param: *const bt_le_adv_param,
) -> i32

@brief Update advertising parameters.

Update the advertising parameters. The function will return an error if the advertiser set is currently advertising. Stop the advertising set before calling this function.

@param adv Advertising set object. @param param Advertising parameters.

@return Zero on success or (negative) error code otherwise.