1# HiSpark WiFi-IoT 套件样例开发--wifihotspot（AP模式） 2 3 4 5[HiSpark WiFi-IoT开发套件](https://item.taobao.com/item.htm?id=622343426064&scene=taobao_shop) 首发于HDC 2020，是首批支持OpenHarmony 2.0的开发套件，亦是官方推荐套件，由润和软件HiHope量身打造，已在OpenHarmony社区和广大OpenHarmony开发者中得到广泛应用。 6 7 8 9## 一、Wifi STA API 10 11使用原始WiFI API接口进行编程，AP模式需要使用原始接口以及一些DHCP客户端接口。 12 13#### WiFi AP模式相关的API接口文件路径 14 15**foundation/communication/interfaces/kits/wifi_lite/wifiservice/wifi_hotspot_config.h** 16 17**foundation/communication/interfaces/kits/wifi_lite/wifiservice/wifi_hotspot.h** 18 19所使用的API接口有： 20 21| API | 接口说明 | 22| ------------------------------------------------------------ | ------------------------ | 23| WifiErrorCode EnableHotspot(void); | 打开Wifi AP 模式 | 24| WifiErrorCode DisableHotspot(void); | 关闭Wifi AP 模式 | 25| WifiErrorCode SetHotspotConfig(const HotspotConfig* config); | 设置当前AP热点的配置参数 | 26| WifiErrorCode GetHotspotConfig(HotspotConfig* result); | 获取当前AP热点的配置参数 | 27| int IsHotspotActive(void); | 查询AP是否已经开启 | 28| WifiErrorCode GetStationList(StationInfo* result, unsigned int* size); | 获取接入的设备列表 | 29| int GetSignalLevel(int rssi, int band); | 获取信号强度等级 | 30| WifiErrorCode SetBand(int band); | 设置当前频段 | 31| WifiErrorCode GetBand(int* result); | 获取当前频段 | 32 33#### Hi3861 SDK的DHCP客户端接口： 34 35| API | 描述 | 36| ------------------- | ------------------ | 37| netifapi_netif_find | 按名称查找网络接口 | 38| netifapi_dhcp_start | 启动DHCP客户端 | 39| netifapi_dhcp_stop | 停止DHCP客户端 | 40 41## 二、代码分析 42 43```c 44//wifi ap task 45static void WifiHotspotTask(void *arg) 46{ 47 (void)arg; 48 WifiErrorCode errCode; 49 HotspotConfig config = {0}; 50 51 // 配置作为AP热点的ssid和key 52 strcpy(config.ssid, "HiSpark-AP"); 53 strcpy(config.preSharedKey, "12345678"); 54 config.securityType = WIFI_SEC_TYPE_PSK; 55 config.band = HOTSPOT_BAND_TYPE_2G; 56 config.channelNum = 7; 57 58 osDelay(10); 59 60 printf("starting AP ...\r\n"); 61 //开启热点 62 errCode = StartHotspot(&config); 63 printf("StartHotspot: %d\r\n", errCode); 64 //热点将开启1分钟 65 int timeout = 60; 66 while (timeout--) { 67 printf("After %d seconds Ap will turn off!\r\n", timeout); 68 osDelay(100); 69 } 70 // 可以通过串口工具发送 AT+PING=192.168.xxx.xxx(如手机连接到该热点后的IP) 去ping连接到该热点的设备的IP地址 71 72 printf("stop AP ...\r\n"); 73 //关闭热点 74 StopHotspot(); 75 printf("stop AP ...\r\n"); 76} 77 78``` 79 80 81 82## 三、如何编译 83 841. 将此目录下的 `wifi_hotspot_demo.c` 和 `BUILD.gn` 复制到openharmony源码的`applications\sample\wifi-iot\app\iothardware`目录下， 852. 修改openharmony源码的`applications\sample\wifi-iot\app\BUILD.gn`文件，将其中的 `features` 改为： 86 87``` 88 features = [ 89 "iothardware:wifi_demo", 90 ] 91``` 92 933. 在openharmony源码顶层目录执行：`python build.py wifiiot` 94 95## 四、运行结果 96 97``` 98ready to OS start 99sdk ver:Hi3861V100R001C00SPC025 2020-09-03 18:10:00 100FileSystem mount ok. 101wifi init success! 102 10300 00:00:00 0 132 D 0/HIVIEW: hilog init success. 10400 00:00:00 0 132 D 0/HIVIEW: log limit init success. 10500 00:00:00 0 132 I 1/SAMGR: Bootstrap core services(count:3). 10600 00:00:00 0 132 I 1/SAMGR: Init service:0x4af278 TaskPool:0xe4b38 10700 00:00:00 0 132 I 1/SAMGR: Init service:0x4af284 TaskPool:0xe4b58 10800 00:00:00 0 132 I 1/SAMGR: Init service:0x4af3ac TaskPool:0xe4b78 10900 00:00:00 0 164 I 1/SAMGR: Init service 0x4af284 <time: 0ms> success! 11000 00:00:00 0 64 I 1/SAMGR: Init service 0x4af278 <time: 0ms> success! 11100 00:00:00 0 8 D 0/HIVIEW: hiview init success. 11200 00:00:00 0 8 I 1/SAMGR: Init service 0x4af3ac <time: 0ms> success! 11300 00:00:00 0 8 I 1/SAMGR: Initialized all core system services! 11400 00:00:00 0 64 I 1/SAMGR: Bootstrap system and application services(count:0). 11500 00:00:00 0 64 I 1/SAMGR: Initialized all system and application services! 11600 00:00:00 0 64 I 1/SAMGR: Bootstrap dynamic registered services(count:0). 117starting AP ... 118RegisterWifiEvent: 0 119SetHotspotConfig: 0 120OnHotspotStateChanged: 1. 121EnableHotspot: 0 122g_hotspotStarted = 1. 123netifapi_netif_set_addr: 0 124netifapi_dhcp_start: 0 125StartHotspot: 0 126After 59 seconds Ap will turn off! 127After 58 seconds Ap will turn off! 128After 57 seconds Ap will turn off! 129+NOTICE:STA CONNECTED 130 PrintStationInfo: mac=54:19:C8:D9:A7:35, reason=0. 131+OnHotspotStaJoin: active stations = 1. 132After 56 seconds Ap will turn off! 133After 55 seconds Ap will turn off! 134 135AT+PING=192.168.1.2 136 137+PING: 138[0]Reply from 192.168.1.2:time=90ms TTL=64 139After 49 seconds Ap will turn off! 140[1]Reply from 192.168.1.2:time=25ms TTL=64 141After 48 seconds Ap will turn off! 142[2]Reply from 192.168.1.2:time=28ms TTL=64 143After 47 seconds Ap will turn off! 144[3]Reply from 192.168.1.2:time=4ms TTL=64 1454 packets transmitted, 4 received, 0 loss, rtt min/avg/max = 4/36/90 ms 146 147OK 148... 149... 150... 151After 3 seconds Ap will turn off! 152After 2 seconds Ap will turn off! 153After 1 seconds Ap will turn off! 154After 0 seconds Ap will turn off! 155stop AP ... 156netifapi_dhcps_stop: 0 157UnRegisterWifiEvent: 0 158+NOTICE:STA DISCONNECTED 159EnableHotspot: 0 160stop AP ... 161 162 163``` 164 165 166 167 168 169### 【套件支持】 170 171##### 1. 套件介绍 http://www.hihope.org/pro/pro1.aspx?mtt=8 172 173##### 2. 套件购买 https://item.taobao.com/item.htm?id=622343426064&scene=taobao_shop 174 175##### 3. 技术资料 176 177- Gitee码云网站（OpenHarmony Sample Code等) **https://gitee.com/hihopeorg** 178 179- HiHope官网-资源中心（SDK包、技术文档下载）**http://www.hihope.org/** 180 181##### 4. 互动交流 182 183- 润和HiHope技术交流-微信群（加群管理员微信13605188699，发送文字#申请加入润和官方群#，予以邀请入群） 184- HiHope开发者社区-论坛 **https://bbs.elecfans.com/group_1429** 185- 润和HiHope售后服务群（QQ：980599547） 186- 售后服务电话（025-52668590） 187
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