Stack()
     {
          Video({
            src: this.srcs,
            previewUri: this.previewUris,
            currentProgressRate: this.currentProgressRates,
            controller: this.controller
          }).width('100%').height('100%')
            .objectFit(ImageFit.Cover)
            .autoPlay(true)
            .controls(this.controlsss)
            .onFinish(() => {
              console.error('onFinish');
             router.push({url:'pages/gauge'})
            })
          // 仪表盘
          Row({ space: 0 }) {
          //油门表
          MyGauge()
	     Column() {
              Canvas(this.car_gauge)
                .width('45%')
                .height('20%')
                .backgroundColor('#000000')
                .onReady(() => {
                  //表环-车速
                 this.car_gauge.clearRect(-100, -100, 600, 600);
                 this.car_gauge.beginPath()
                 this.car_gauge.translate(0, 0)
                 this.car_gauge.shadowBlur = 30
                 this.car_gauge.shadowColor = this.car_gauge_col
                 this.car_gauge.arc(this.gauge_speed_x, this.gauge_speed_y, 100, 0, 6.28)
                 this.car_gauge.fillStyle = 'black'
                 this.car_gauge.fill()
                 this.car_gauge.closePath()
			      //数字环、指针 操作类似，略过
				//车速
             Text(this.car_velocity+" KM/H")
                .fontSize(40).height(40).fontStyle(FontStyle.Italic).textAlign(TextAlign.Center)
                .backgroundColor('black').fontColor('white')
			}
	     //电量表
            Gauge({ value: this.fuel_value, min: 0, max: 120 })
              .startAngle(240)
              .endAngle((this.fuel_value))
              .colors([[0x5BA854, 0.5],[0xCFB53B, 0.5],[0xF01020, 0.5] ])
              .strokeWidth(30)
              .width(120)
              .height(120)
              .margin({top:30})
	 		}
		}
	}
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Column({ space:0 }) {
            if(this.display_flag==1) {
              Video({
                src: this.srcs,
                currentProgressRate: this.currentProgressRates,
                controller: this.controller
              })
                .width('100%')
                .height('80%')
                .objectFit(ImageFit.Fill)
                .autoPlay(this.autoPlays)
                .controls(this.controlsss)
                .onStart(() => {
                  console.error('onStart');
                })
            }
            else if(this.display_flag==2)
            {
              Column()
              {
                qqmusic()
              }.height('80%').alignItems(HorizontalAlign.Center)
            }
            else if(this.display_flag==3)
            {
                Column()
                {
                  amap()
                }.height('80%').alignItems(HorizontalAlign.Center)
            }
            else if(this.display_flag==4)
            {
                Column()
                {
                  Bilibili()
                }.height('80%').alignItems(HorizontalAlign.Center)
 
           }
//web实现如下：
@Component
struct Bilibili {
  @State message: string = 'Hello World'
  controller: WebController = new WebController();
  build() {
      Column()
      {
        Web({ src: 'https://www.bilibili.com/', controller: this.controller })
      }
      .width('100%')
      .height('100%')
    .backgroundColor('black')
  }
}
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  tcpSend() {
    tcp.getState().then((data) => {
      if (data.isConnected) {
        //发送消息
        tcp.send(
          { data: this.message_send, }
        ).then(() => {
          prompt.showToast({message:"send message successful"})
        }).catch((error) => {
          prompt.showToast({message:"send failed"})
        })
      } else {
        prompt.showToast({message:"tcp not connect"})
      }
    })
  }
 //一键启动
          Button({ type: ButtonType.Circle, stateEffect: true }) {
            Image($r('app.media.engine')).objectFit(ImageFit.Contain)
          }
          .width(90)
          .height(90)
          .margin({ top: 1, left: 80 })
          .backgroundColor(this.engine_btn_col)
          .onClick(() => {
            this.car_gauge_col = 'white'
            this.srcs = $r('app.media.ferrari_start')
            this.controller.start()
            this.click_times += 1
            this.tcpConnect()
            if (this.click_times % 2 != 0) {
              this.engine_btn_col = 0x32c5ef
              this.update_canvas();
            }
            else
            {
              this.engine_btn_col = 0xCBD3D0
              this.click_times = 0;
            }
            prompt.showToast({
              message: "Start Engine:" + this.car_velocity,
            })
          })
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import brightness from '@ohos.brightness';
 Row()
        {
          Text('亮度').fontColor('blue').fontSize('35').width('10%').borderRadius(30).margin({top:10,left:30})

          Slider({
            value: this.brightness,
            min: 100,
            max: 255,
            step: 1,
            style: SliderStyle.OutSet
          })
            .width('80%').height('100%') .blockColor('blue').trackColor(Color.Black)    
            .onChange((value: number, mode: SliderChangeMode) => {
              this.brightness = value
              brightness.setValue(this.brightness);
              console.info('value:' + value + 'mode:' + mode.toString())
            }).width('75%')
          Text(this.brightness.toFixed(0)).fontSize(30).width('15%').fontColor('blue')
        }.height('10%').backgroundColor('white')
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//需引入 import {getApp} from '../../common.js';  
 sendMessage()
    {
        var message = this.app_msg;
        let commonInfo = {
            sessionId: getApp(this).ConfigParams.deviceInfo.sessionId
        };
        getApp(this).NetConfig.sendMessage(commonInfo, message,(result)=>{
            if(result.code ==0) {  prompt.showToast({message:'发送成功'})}
            else{prompt.showToast({message:'发送失败'})}
            });
    },
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while (1)
		{
			AHT20_Calibrate();
			AHT20_StartMeasure();
			AHT20_GetMeasureResult(&EnvData.temp_val, &EnvData.humi_val);
			EnvData.ppm_val = Get_MQ2_PPM();
			if ((ret = recv(new_fd, recvbuf, sizeof(recvbuf), 0)) == -1)
			{
				printf("recv error \r\n");
			}
			printf("recv :%s\r\n", recvbuf);
			const unsigned char msg_cmd = recvbuf[0];
			//hi_uart_write(1, &msg_cmd, 1);
			UartWrite(1, &msg_cmd, 1);
			if (msg_cmd == 'x')
			{
				GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_14, 0);
				hi_udelay(80000);
				GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_14, 1);
			}
			if (msg_cmd == 'y')
			{
				GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_8, 0);
				hi_udelay(80000);
				GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_8, 1);
			}
			Float2String(buf, EnvData.humi_val, 2);
			if ((ret = send(new_fd, buf, strlen(buf) + 1, 0)) == -1)
			{
				perror("send : ");
			}
			Float2String(buf, EnvData.ppm_val, 2);
			if ((ret = send(new_fd, buf, strlen(buf) + 1, 0)) == -1)
			{
				perror("send : ");
			}
			Float2String(buf, EnvData.ppm_val, 2);
			if ((ret = send(new_fd, buf, strlen(buf) + 1, 0)) == -1)
			{
				perror("send : ");
			}
			GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_14, 0);
			GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_8, 0);
			sleep(1);
		}
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include:
│   ├── netcfg.h   // 无感配网注册相关接口
│   ├── network_config_service.h //无感配网相关头文件。
libs:
├── libs
│   ├── libhilinkadapter_3861.a // 无感配网相关库文件。
│   └── libnetcfgdevicesdk.a // 无感配网相关库文件。
src:
    ├── netcfg.c // NAN相关操作和联网动作
const char *g_ssid = "OHCar     ";
const char *g_pinCode = "11111111";
const char *g_productId = "1";
const char *g_sn = "0123/.,.,4567890123450123456789012345";
···
devInfo[0].key = "productId";
devInfo[1].key = "sn";
devInfo[0].value = g_productId;
devInfo[1].value = g_sn;
ret = StartNetCfg(devInfo, DEVICE_INFO_NUM, NETCFG_SOFTAP_NAN); //SoftAP and NAN模式 

//上报电量、位置信息、控制模拟空调
    if (strcmp(app_msg, "turn off air") == 0)
    {
        IoTGpioSetOutputVal(FAN_IO1, IOT_GPIO_VALUE0);
        IoTPwmStart(1, 0, 80000);
        printf("turn off air \r\n");
        app_msg[0] = '9';
        return;
    }

    if (strcmp(app_msg, "car location") == 0)
    {
        // Bluetooth_read(location2app, 18)   //室内GPS信号弱
        strncpy(location2app, "N:110.20  E:19.220 addr", 18);
        SendRawData(&location2app); // 将消息发到FA
        printf("car location\r\n");
        app_msg[0] = '9';
        return;
    }

    if (strcmp(app_msg, "car fuel") == 0)
    {
        fuel_val = GetVoltage();
        float percent_vol = 1000 * fuel_val / FULL_FUEL;
        Float2String(percent_vol, &temp_str, 2);
        strncpy(fuel2app, temp_str, 5);
        SendRawData(&fuel2app); // 将消息发到FA
        printf("get car fuel \r\n");
        app_msg[0] = '9';
        return;
    }
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typedef enum MSG_CMD {
  MOVE_GO = 'a',
  MOVE_BACK,
  MOVE_LEFT,
  MOVE_RIGHT, //移动
  OPEN_LEFT_DOOR,
  CLOSE_LEFT_DOOR,
  OPEN_RIGHT_DOOR,
  CLOSE_RIGHT_DOOR,//车门
  SPOILER_UP,
  SPOILER_DOWN,  //尾翼
  MOVE_GO_LIGHT,
  MOVE_BACK_LIGHT,
  WARRING_LIGHT_ON,
  WARRING_LIGHT_OFF
};
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