【鸿蒙】分布式通信子系统--让华为手机发现Hi3861开发板
目录： 工具 步骤 运行结果 工具： 1. 华为手机，需要有多设备协同功能。在设置->更多连接->多设备协同，查看是否有多设备协同功能，此功能使用的就是coap协议。 2. Hi3861开发板 步骤： 1. 修改源码，发布一个Serivce 2. 启动Hi3861开发板，并连接WIFI，对Hi3861设备接收广播和响应广播处添加日志，使用串口工具查看日志。 3. 使用路由器上进行抓包。udp，端口是5684 4. 将多设备协同开关打开。在打开开关的瞬间，可以看到Hi3861开发板接收到了多条广播请求，同时对多条广播进行响应 运行结果： 可以看到Hi3861开发板对华为手机发现设备时发出的广播进行响应，但手机上并没有展示出Hi3861设备信息，可能是还需要一些其他信息，或者传递的信息手机并不支持，具体原因不详，不清楚手机端对Hi3861发送的响应报文是如何处理的，但Hi3861通过HarmonyOS系统能力，已经能成功与手机进行交互了。下一步就是通过解决如何在手机上展示并通过HarmonyOS系统能力进行通信，如获取设备温度。 下面一张截图中手机的IP是192.168.1.216，Hi3861开发板的IP是192.168.1.232，可以看到开发板对手机广播的成功响应。 [18:56:32.719]收←◆ready to OS start sdk ver:Hi3861V100R001C00SPC025 2020-09-03 18:10:00 formatting spiffs... [18:56:33.040]收←◆FileSystem mount ok. wifi init success! GetService name:GetService name: get feature name. GetService name: get feature name. [Register Test][TaskID:954112][Step:0][Reg S:example, F:example] Time: 330! GetService name: GetService name: GetService name:[Boot Test][TaskID:0xe8c44][Step:1][Reg Finish S:example]Time: 340! GetService name:Register Test,Oninit1Register Test,Oninit [DISCOVERY] InitLocalDeviceInfo ok [DISCOVERY] Init socket success. [DISCOVERY] liteos_m init wifi event. [DISCOVERY]CoapInitWifiEvent() [DISCOVERY]CreateMsgQue() [DISCOVERY]OnWifiConnectionChanged bind.() [DISCOVERY]RegisterWifiEvent() [DISCOVERY]RegisterWifiEvent success. [DISCOVERY]create message queue task. [DISCOVERY]create message queue success. [DISCOVERY] init cop listen thread. [DISCOVERY] CreateCoapListenThread [DISCOVERY] CreateCoapListenThread2 [DISCOVERY]CoapWriteMsgQueue(). [DISCOVERY] InitService ok [DISCOVERY] PublishCallback publishId=1, result=0 demo service publish success.1get feature name.GetService name:[DISCOVERY]ReadMsgQue(). [DISCOVERY]CoapHandleWifiEvent(). [DISCOVERY] WifiEventTrigger 1. [DISCOVERY] WifiEventTrigger[DISCOVERY] CoapReadHandle() [DISCOVERY] CoapReadHandle coin select begin [DISCOVERY] CoapReadHandle, select GetCommonDeviceInfo is success. [DISCOVERY] CoapGetIp(). [DISCOVERY] WifiEventTrigger . [DISCOVERY] WifiEventTrigger ret is 0. [DISCOVERY] WifiEventTrigger BusManager(). [TRANS] OpenTcpServer inet_pton fail, rc=0:(null) [TRANS] InitListenFd OpenTcpServer fail [AUTH] StartBus StartListener fail [DISCOVERY] WifiEventTrigger StartBusManager(1) fail [DISCOVERY]ReadMsgQue(). 00 00:00:00 0 68 D 0/HIVIEW: hilog init success. 00 00:00:00 0 68 D 0/HIVIEW: log limit init success. 00 00:00:00 0 68 I 1/SAMGR: Bootstrap core services(count:3). 00 00:00:00 0 68 I 1/SAMGR: Init service:0x4c4c14 TaskPool:0xfa9a4 00 00:00:00 0 68 I 1/SAMGR: Init service:0x4c4c38 TaskPool:0xfb014 00 00:00:00 0 68 I 1/SAMGR: Init service:0x4c6d88 TaskPool:0xfb1d4 00 00:00:00 0 100 I 1/SAMGR: Init service 0x4c4c38 <time: 0ms> success! 00 00:00:00 0 0 I 1/SAMGR: Init service 0x4c4c14 <time: 0ms> success! 00 00:00:00 0 200 D 0/HIVIEW: hiview init success. 00 00:00:00 0 200 I 1/SAMGR: Init service 0x4c6d88 <time: 0ms> success! 00 00:00:00 0 200 I 1/SAMGR: Initialized all core system services! 00 00:00:00 0 0 I 1/SAMGR: Bootstrap system and application services(count:1). 00 00:00:00 0 0 I 1/SAMGR: Init service:0x4c4cf0 TaskPool:0xeba70 00 00:00:00 0 68 I 1/SAMGR: Init service 0x4c4cf0 <time: 80ms> success! 00 00:00:00 0 68 I 1/SAMGR: Initialized all system and application services! 00 00:00:00 0 0 I 1/SAMGR: Bootstrap dynamic registered services(count:0). [18:56:53.855]发→◇AT+STARTSTA □ [18:56:53.860]收←◆AT+STARTSTAbusy! busy! busy! OK [18:57:03.997]发→◇AT+CONN=,86:73:03:de:fc:14,3,"12345678" □ [18:57:04.002]收←◆AT+CONN=,86:73:03:de:fc:14,3,"12345678"busy! busy! busy! busy! OK [18:57:04.780]收←◆+NOTICE:SCANFINISH [18:57:05.265]收←◆+NOTICE:CONNECTED [DISCOVERY]CoapConnectionChangedHandler(). [DISCOVERY]CoapWriteMsgQueue(). [DISCOVERY]CoapHandleWifiEvent(). [DISCOVERY] WifiEventTrigger 1. [DISCOVERY] WifiEventTrigger GetCommonDeviceInfo is success. [DISCOVERY] CoapGetIp(). [18:57:20.196]发→◇AT+DHCP=wlan0,1 □ [18:57:20.200]收←◆AT+DHCP=wlan0,1busy! busy! OK [18:57:21.210]收←◆[DISCOVERY] WifiEventTrigger 192.168.43.112. [DISCOVERY] WifiEventTrigger ret is 0. [DISCOVERY] WifiEventTrigger BusManager(). [TRANS] OpenTcpServer inet_pton rc=1 [TRANS] OpenTcpServer fd=1 [TRANS] WaitProcess begin [TRANS] StartListener ok [TRANS] OpenTcpServer inet_pton rc=1 [TRANS] OpenTcpServer fd=2 [TRANS] StartSelectLoop create trans_session_task [TRANS] SelectSessionLoop begin [AUTH] StartBus ok [DISCOVERY] WifiEventTrigger CoapRegisterDeviceInfo(). [DISCOVERY]ReadMsgQue(). [18:57:36.642]收←◆[DISCOVERY] HandleReadEvent() [DISCOVERY] COAP_SoftBusDecode() [DISCOVERY] PostServiceDiscover() [DISCOVERY] GetServiceDiscoverInfo() [DISCOVERY] GetServiceDiscoverInfo() [DISCOVERY] ParseServiceDiscover() {"deviceId":"{\"UDID\":\"EB1204FC4F250C892EBD67E46D0CEA03FFC16347541C95954434F22494231CCE\"}","devicename":"nova 5 Pro","type":14,"hicomversion":"2.1.0.0","mode":1,"deviceHash":"2850086000394994110","serviceData":"","wlanIp":"192.168.43.241","capabilityBit[DISCOVERY] ParseServiceDiscover(coap://192.168.43.241/device_discover) [DISCOVERY]CoapResponseService(). [DISCOVERY]PrepareServiceDiscover(). [DISCOVERY]init data(). {"deviceId":"{\"UDID\":\"BE753141CDEC87CE61D564BFD84C908E966011DEB00BF46690FC97B133AA795B\"}","devicename":"DEV_L0","type":241,"hicomversion":"","mode":0,"deviceHash":"4174638","serviceData":"port:56968,,","wlanIp":"192.168.43.112","capabilityBitmap":[64]}[DISCOVERY]CoapSendRequest(). [DISCOVERY]CoapSendRequest remote ip:192.168.43.241. CoapSocketSend:3,294 send result:294\[DISCOVERY]send success. [DISCOVERY] CoapReadHandle, select [DISCOVERY] HandleReadEvent() [DISCOVERY] COAP_SoftBusDecode() [DISCOVERY] PostServiceDiscover() [DISCOVERY] GetServiceDiscoverInfo() [DISCOVERY] GetServiceDiscoverInfo() [DISCOVERY] ParseServiceDiscover() {"deviceId":"{\"UDID\":\"EB1204FC4F250C892EBD67E46D0CEA03FFC16347541C95954434F22494231CCE\"}","devicename":"nova 5 Pro","type":14,"hicomversion":"2.1.0.0","mode":1,"deviceHash":"2850086000394994110","serviceData":"","wlanIp":"192.168.43.241","capabilityBit [DISCOVERY] ParseServiceDiscover(coap://192.168.43.241/device_discover) [DISCOVERY]CoapResponseService(). [DISCOVERY]PrepareServiceDiscover(). [DISCOVERY]init data(). {"deviceId":"{\"UDID\":\"BE753141CDEC87CE61D564BFD84C908E966011DEB00BF46690FC97B133AA795B\"}","devicename":"DEV_L0","type":241,"hicomversion":"","mode":0,"deviceHash":"4174638","serviceData":"port:56968,,","wlanIp":"192.168.43.112","capabilityBitmap":[64]}[DISCOVERY]CoapSendRequest(). [DISCOVERY]CoapSendRequest remote ip:192.168.43.241. CoapSocketSend:4,294 send result:294\[DISCOVERY]send success. [DISCOVERY] CoapReadHandle, select 作者：mb5f8960971f61a 想了解更多内容，请访问： 51CTO和华为官方战略合作共建的鸿蒙技术社区https://harmonyos.51cto.com
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