设置新的服务器地址后，点击完成，wifi模块立即去新服务器地址注册。

wifi_ble_demo/pages/index/index.js

             icon: 'none'
           })
         },500)
-        wx.navigateBack()
+        wx.navigateBack({
+          delta: 100
+        })
         this.setData({
           connected: false,
           showWriteInput: false,

wifi_ble_demo/pages/serverConfig/serverConfig.js

   },
   tapItem(e) {
     let index = e.currentTarget.dataset.index
-    this.setData({
-      itemIndex: index
-    })
     console.log('tapItem()', index)
-    this.showModal()
+    if (index <= 2) {
+      this.setData({
+        itemIndex: index
+      })
+      this.showModal()
+    } else {
+      //重启模块,模块重启时,ble会断开连接
+      console.log('重启模块')
+      this.resetBLEModule()
+    }
   },
 
   confirm() {
     plugin.sendDataOfA6(cmd)
   },
 
+  /**
+   * 重启蓝牙模块
+   */
+  resetBLEModule() {
+    let cmd = [0x21, 0x01]
+    plugin.sendDataOfA6(cmd)
+  },
+
 })

wifi_ble_demo/pages/serverConfig/serverConfig.wxml

     <button class="text_left" bindtap="tapItem" data-index='{{0}}' style="font-size: 32rpx;line-height:100rpx;width: 100%;background:#fff">服务器地址:{{serverAddress}}</button>
     <button class="text_left" bindtap="tapItem" data-index='{{1}}' style="font-size: 32rpx;line-height:100rpx;width: 100%;background:#fff">端口:{{serverPort}}</button>
     <button class="text_left" bindtap="tapItem" data-index='{{2}}' style="font-size: 32rpx;line-height:100rpx;width: 100%;background:#fff">路径:{{serverPath}}</button>
+    <button bindtap="tapItem" data-index='{{3}}' style="font-size: 32rpx;line-height:100rpx;width: 100%;background:#fff">完成</button>
   </view>