蓝牙核心协议定义书，包括蓝牙协议栈的分层、消息格式定义，消息定义等内容 Useofthisspecificationisyouracknowledgementthatyouagreetoandwillcomplywiththefollowingnoticesanddisclaimers.Youareadvisedtoseekappropriatelegal,engineering,andotherprofessionaladviceregardingtheuse,interpretation,andeffectof