array(23) {
  ["id"] => string(2) "96"
  ["siteid"] => string(1) "1"
  ["type"] => string(1) "1"
  ["m_id"] => string(1) "0"
  ["p_id"] => string(1) "0"
  ["name"] => string(6) "服务"
  ["thumb"] => string(63) "/modules/cms/uploads/recommend/2018/05/15/05797102164099283.png"
  ["image"] => string(0) ""
  ["desc"] => string(0) ""
  ["pdir"] => string(0) ""
  ["dir"] => string(7) "service"
  ["url"] => string(0) ""
  ["setting"] => array(15) {
    ["is_html"] => int(1)
    ["content_is_html"] => int(0)
    ["urlrule"] => int(1)
    ["contenturlrule"] => int(0)
    ["meta_title"] => string(88) "定制开发-APP定制开发,微信定制开发,小程序定制开发,网站定制开发"
    ["meta_keywords"] => string(75) "APP定制开发,微信定制开发,小程序定制开发,网站定制开发"
    ["meta_description"] => string(0) ""
    ["category_template"] => string(0) ""
    ["list_template"] => string(0) ""
    ["show_template"] => string(21) "show_page_dingzhi.tpl"
    ["formid"] => string(0) ""
    ["url"] => string(0) ""
    ["target"] => string(0) ""
    ["pri_grade_visit"] => array(0) {
    }
    ["pri_grade_add"] => array(0) {
    }
  }
  ["order"] => string(1) "1"
  ["sethtml"] => string(1) "0"
  ["stat"] => string(1) "2"
  ["flowid"] => string(1) "0"
  ["image_mo"] => string(63) "/modules/cms/uploads/recommend/2018/05/25/05805654599261264.jpg"
  ["page_num"] => string(1) "0"
  ["wxstat"] => string(1) "0"
  ["scope"] => string(0) ""
  ["modelname"] => NULL
  ["son"] => array(8) {
    [0] => array(22) {
      ["id"] => string(3) "187"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(15) "小程序开发"
      ["thumb"] => string(0) ""
      ["image"] => string(0) ""
      ["desc"] => string(112) "专业微信小程序解决方案|各种场景核心功能,提前布局微信新生态,抢占第一波红利"
      ["pdir"] => string(0) ""
      ["dir"] => string(6) "wechat"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(107) "小程序|商城小程序|门店小程序|微圈小程序|餐饮小程序开发-艺源科技小程序开发"
        ["meta_keywords"] => string(103) "小程序开发,商城小程序开发,门店小程序开发,微圈小程序开发,餐饮小程序开发"
        ["meta_description"] => string(269) "专注提供专注提供小程序、商城小程序、门店小程序、微圈小程序、餐饮小程序开发,专业团队,一对一服务,助企业快速生成自己的移动端微商城平台. 艺源科技小程序采用高性能数据架构,系统稳定安全。"
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(17) "show_page_xcx.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "0"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(0) ""
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "1"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [1] => array(22) {
      ["id"] => string(3) "199"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(9) "APP开发"
      ["thumb"] => string(0) ""
      ["image"] => string(0) ""
      ["desc"] => string(0) ""
      ["pdir"] => string(0) ""
      ["dir"] => string(3) "APP"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(65) "app开发_app定制开发_app制作开发公司【艺源科技】"
        ["meta_keywords"] => string(53) "app开发,app定制开发公司,app制作开发公司"
        ["meta_description"] => string(0) ""
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(17) "show_page_app.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "1"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(0) ""
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [2] => array(22) {
      ["id"] => string(3) "207"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(14) "AI智能名片"
      ["thumb"] => string(0) ""
      ["image"] => string(63) "/modules/cms/uploads/recommend/2019/07/04/06155550417466502.jpg"
      ["desc"] => string(0) ""
      ["pdir"] => string(0) ""
      ["dir"] => string(2) "ai"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(68) "艺源AI智能名片_名片小程序_智能名片_让销售更简单"
        ["meta_keywords"] => string(97) "艺源AI智能名片,名片小程序,智能名片_让销售更简单,电子名片,二维码名片"
        ["meta_description"] => string(184) "艺源AI智能名片-让销售更简单。艺源AI智能名片为企业提供名片小程序,智能名片,企业名片,小程序名片,电子名片,二维码名片等相关的服务。"
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(16) "show_page_ai.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "2"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(0) ""
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [3] => array(22) {
      ["id"] => string(3) "201"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(12) "版权登记"
      ["thumb"] => string(0) ""
      ["image"] => string(63) "/modules/cms/uploads/recommend/2019/06/09/06134055003581246.png"
      ["desc"] => string(0) ""
      ["pdir"] => string(0) ""
      ["dir"] => string(9) "copyright"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(0) ""
        ["meta_keywords"] => string(0) ""
        ["meta_description"] => string(0) ""
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(23) "show_page_copyright.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "3"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(63) "/modules/cms/uploads/recommend/2019/06/09/06134114664045364.png"
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [4] => array(22) {
      ["id"] => string(3) "203"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(12) "商标注册"
      ["thumb"] => string(0) ""
      ["image"] => string(63) "/modules/cms/uploads/recommend/2019/06/11/06135613173195858.png"
      ["desc"] => string(0) ""
      ["pdir"] => string(0) ""
      ["dir"] => string(9) "trademark"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(131) "商标注册_商标注册流程_商标注册流程及费用_西安商标注册_西安商标注册代理-「源知果」艺源科技"
        ["meta_keywords"] => string(103) "商标注册,商标注册流程,商标注册流程及费用,西安商标注册,西安商标注册代理"
        ["meta_description"] => string(182) "「源知果」西安提供代理版权登记,代理商标注册,代理专利申请,代理企业贯标,代理高新技术企业认定的服务;咨询电话:13325455411。"
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(23) "show_page_trademark.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "4"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(63) "/modules/cms/uploads/recommend/2019/06/11/06135617157272716.png"
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [5] => array(22) {
      ["id"] => string(3) "205"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(12) "网站建设"
      ["thumb"] => string(0) ""
      ["image"] => string(63) "/modules/cms/uploads/recommend/2019/06/21/06144566585327511.jpg"
      ["desc"] => string(149) "节约IT成本/降低运维成本/网站安全稳定/不满意全额退款|节约IT成本/降低运维成本/网站安全稳定/不满意全额退款"
      ["pdir"] => string(0) ""
      ["dir"] => string(7) "website"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(80) "西安商城网站建设_政府网站建设_学校网站建设就选艺源科技"
        ["meta_keywords"] => string(113) "西安网站建设,西安网络公司,西安网页设计,商城网站建设,政府网站建设,学校网站建设"
        ["meta_description"] => string(248) "「艺源科技」是西安一家专业的西安商城网站建设,政府网站建设,学校网站建设的网络公司,咨询电话:029-88810146/150 9401 9029。公司拥有10年实践经验,为您提供一条龙的互联网应用解决方案。"
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(21) "show_page_website.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "5"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(63) "/modules/cms/uploads/recommend/2019/06/24/06146855992801864.jpg"
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [6] => array(22) {
      ["id"] => string(3) "208"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "2"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(15) "云服务平台"
      ["thumb"] => string(0) ""
      ["image"] => string(0) ""
      ["desc"] => string(0) ""
      ["pdir"] => string(0) ""
      ["dir"] => string(0) ""
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(0)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(0)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(0) ""
        ["meta_keywords"] => string(0) ""
        ["meta_description"] => string(0) ""
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(0) ""
        ["formid"] => string(0) ""
        ["url"] => string(26) "http://saas001.yysweb.com/"
        ["target"] => string(6) "_blank"
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "6"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(0) ""
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
    [7] => array(22) {
      ["id"] => string(3) "202"
      ["siteid"] => string(1) "1"
      ["type"] => string(1) "1"
      ["m_id"] => string(1) "0"
      ["p_id"] => string(2) "96"
      ["name"] => string(9) "SEO优化"
      ["thumb"] => string(0) ""
      ["image"] => string(63) "/modules/cms/uploads/recommend/2019/06/09/06134199008388559.jpg"
      ["desc"] => string(0) ""
      ["pdir"] => string(0) ""
      ["dir"] => string(3) "seo"
      ["url"] => string(0) ""
      ["setting"] => array(15) {
        ["is_html"] => int(1)
        ["content_is_html"] => int(0)
        ["urlrule"] => int(1)
        ["contenturlrule"] => int(0)
        ["meta_title"] => string(90) "【西安SEO优化_西安网站优化_关键词排名优化】-SEO优化公司艺源科技"
        ["meta_keywords"] => string(81) "西安SEO优化,西安SEO优化公司,西安网站优化,西安网站优化公司"
        ["meta_description"] => string(244) "艺源科技(yysweb.com),专注为企业提供百度等搜索引擎整站SEO优化服务,针对不同行业、网站情况给出不同策略、报价和SEO建议;是您值得信赖的seo诊断、顾问咨询等云SEO技术服务外包商。"
        ["category_template"] => string(0) ""
        ["list_template"] => string(0) ""
        ["show_template"] => string(17) "show_page_seo.tpl"
        ["formid"] => string(0) ""
        ["url"] => string(0) ""
        ["target"] => string(0) ""
        ["pri_grade_visit"] => array(0) {
        }
        ["pri_grade_add"] => array(0) {
        }
      }
      ["order"] => string(1) "7"
      ["sethtml"] => string(1) "0"
      ["stat"] => string(1) "2"
      ["flowid"] => string(1) "0"
      ["image_mo"] => string(63) "/modules/cms/uploads/recommend/2019/06/10/06134890654481338.jpg"
      ["page_num"] => string(1) "0"
      ["wxstat"] => string(1) "0"
      ["scope"] => string(0) ""
      ["modelname"] => NULL
    }
  }
}
				
当前位置: 首页 > 售后 > 艺源智库
【小程序】小程序•小故事(11)——低功耗蓝牙能力
时间:2018-07-26 14:52:24
文章发布:杜凯
原创作者:思程
来源: 微信开发者

在无线通信领域,蓝牙是最基础又常用的能力。蓝牙组网十分简单,两设备间做个配对就可以建立起连接,其通信距离理论值为10米至100米以内,是近距离通信应用场景所喜爱的。今天我们想跟大家分享小程序连接蓝牙的能力。




目前蓝牙最为普遍的两种规格为蓝牙基础率/增强数据率 (BR/EDR) 和低功耗 (LE) 蓝牙。


蓝牙基础率/增强数据率 (BR/EDR) 是经典的蓝牙协议,常用在对数据传输带宽有一定要求的场景上,比如需要传输音频数据的蓝牙音箱等;


低功耗 (LE) 蓝牙是从蓝牙4.0起支持的协议,特点就是耗电极低、传输速度更快,常用在对续航要求较高且只需小数据量传输的各种智能电子产品中,包括心率监测仪器、体温计、血糖仪、智能穿戴设备、胎压监测和电子烟等等,应用场景广泛,所以小程序在很早的版本(基础库 1.1.0)就优先支持了低功耗蓝牙能力。


我们在开发基于低功耗蓝牙接口的小程序时,需要先理解一下蓝牙在连接和通信过程中的一些概念。


工作模式


低功耗蓝牙协议给设备定义了若干角色,其中最主要的角色是:外围设备(Peripheral)中心设备(Central)


1

外围设备是用来提供数据,通过不停地向外广播数据,让中心设备发现自己。


2

中心设备会扫描外围设备,发现有外围设备存在后,可以与之建立连接,之后就可以使用外围设备提供的服务(Service)。一般而言,手机会担任中心设备的角色,利用外围设备提供的数据进行处理或展示等等。因此,小程序提供低功耗蓝牙接口是默认设定手机为中心设备的。


通信协议


在两个蓝牙设备建立连接之后,双方的数据交互是基于一个叫做 GATT (Generic Attribute Profile) 的规范,根据该规范可以定义出一个个配置文件(Profile),描述该蓝牙设备提供的服务(Service)。


在整个通信过程中,有三个最主要的概念:配置文件(Profile)、服务(Service)、特性(Characteristic)。


1

Profile 并不真实存在于蓝牙设备中,它只是被蓝牙标准预先定义的一些 Service 的集合,如果蓝牙设备之间要相互兼容,它们只要支持相同的 Profile 即可。一个蓝牙设备可以支持多个 Profile。


2

Service 可以理解为蓝牙设备提供的服务,一个设备可以提供多个服务,比如电量信息服务、系统信息服务等。每个 Service 又包含多个 Characteristic 特性值,比如电量信息服务就会有个 Characteristic 表示电量数据,同时还会有一个 16bit 或 128bit 的 UUID 标识该服务,像微信硬件平台的蓝牙智能灯的主服务 UUID 为 0xFEE7。16 bit 的 UUID 实际上是 128 bit 的缩短版,接收方收到后会补上蓝牙的 UUID 基数,目的是为了提高传输效率。


3

Characteristic 是在 GATT 规范中最小的逻辑数据单元,由一个 value 和多个描述特性的 Desciptor 组成。实际上,在与蓝牙设备打交道,主要就是通过读写 Characteristic 的 value 完成。同样的,Characteristic 也是通过一个 16bit 或 128bit 的 UUID 。


总结一下,如下图所示,我们可以简单地理解为:每个蓝牙设备可能提供多个 Service,每个 Service 可能有多个 Characteristic,我们根据蓝牙设备的协议用对应的 Characteristic 进行读写即可达到与其通信的目的。



在理解了上面的模式和概念后,接下来我们看看如何可以使用小程序提供的蓝牙接口。


Step 1 :扫描并发现蓝牙外围设备

扫描并发现蓝牙外设。如果蓝牙功能未开启,可监听蓝牙状态变化以便自动进入下一步,提升用户体验。



Step 2 :连接蓝牙外围设备

若之前连接过某个设备,可跳过扫描步骤,直接传入 deviceId 连接。



<section class="" powered-by="xiumi.us" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvet


标签: 小程序
*版权申明:本站部分文章由艺源科技收集整理,不代表我们的观点。如果这篇转载侵犯您的版权,请及时联系我们删除!
为您推荐
最新文章