用户参考自定义透传的智能灯示例，定义目标产品的二进制数据协议，编写对应的上下行数据的解析脚本，设备侧即可基于二进制实现和平台交互。

### 1.创建自定义透传产品，同时选择智能灯产品类型
![](https://main.qcloudimg.com/raw/e385b9e53e2b510df5da93c2977919cb.png)

### 2. 使能二进制数据解析功能
![](https://main.qcloudimg.com/raw/22f6e4797466f41e17111b61f9c51072.png)

### 3. 智能灯二进制协议格式

- 上报格式
![](https://main.qcloudimg.com/raw/d4736c9fe19da201d65e80cb72ab17d2.png)

- 下发格式
![](https://main.qcloudimg.com/raw/67ed266e814783adef513dcbf764fbbc.png)

### 4. 编辑上下行二进制数据与Json数据转换的解析脚本并提交
- 目前解析脚本暂时只支持JavaScript语法
![](https://main.qcloudimg.com/raw/2e6d2b20723d7567f64fab7889d8e87a.png)

对应的脚本代码如下：
- 上行二进制数据到Json数据的解析脚本

```

function RawToProtocol(fPort, bytes) {
    var data = {
    "method": "report",
    "clientToken": new Date(),
    "params":{}
    };
    if (bytes[2] != 1) {
        return data ;
    } 
    var sw =  bytes[8];
    if (sw == 0 || sw == 1) {
        data.params.power_switch =  sw;
    }
    var color =  bytes[9];
    if (color >=0  &&  color < 4 ) {
        data.params.color =  color;
    }   
    var brightness =  bytes[10];
    if (brightness >=0  &&   brightness <=100 ) {
        data.params.brightness =  brightness;
    }        
    return data;
}

```

- 下行Json数据到二进制数据的解析脚本

```

function ProtocolToRaw(json) {
  
  var data = new Array();

  var method = json['method'];
  if (method !="control") { 
      return data;
  }
  data[0] = 0xaa;// header 0x55aa
  data[1] = 0x55;

  data[2] = 0x20; // control commandb
  data[3] = 0; // padding

  //requestid  这里随便填了
  data[4] = 0xcc; 
  data[5] = 0xcc; 
  data[6] = 0xcc; 
  data[7] = 0xcc; 

  var params = json['params'];  

  if (params.power_switch != undefined) {
      data[8] = params.power_switch ; //switch 
  } else {
      data[8] = 255;
  }
  
  if (params.color != undefined) {
      data[9] = params.color ; //color
  } else {
      data[9] = 255;
  }  

  if (params.brightness != undefined) {
      data[10] = params.brightness ; //brightness
  } else {
      data[10] = 255;  }
  
  data[11] = 255 ; //name is invalid
  return data;
}


```

- 可以在线调试脚本的解析功能
![](https://main.qcloudimg.com/raw/6ce7da31c2442f7967cb89edd20ed09b.png)


###  5. 编译SDK并运行二进制示例

- 带参数 -l 二进制示例会循环执行，示例会定时上报二进制数据，收到二进制数据会dump出来。

```
./raw_data_mqtt_sample -l
INF|2020-02-13 01:41:55|qcloud_iot_device.c|iot_device_info_set(65): SDK_Ver: 3.1.1, Product_ID: NQ7GQN6KSR, Device_Name: dev001
DBG|2020-02-13 01:41:55|HAL_TLS_mbedtls.c|HAL_TLS_Connect(206): Setting up the SSL/TLS structure...
DBG|2020-02-13 01:41:55|HAL_TLS_mbedtls.c|HAL_TLS_Connect(248): Performing the SSL/TLS handshake...
DBG|2020-02-13 01:41:55|HAL_TLS_mbedtls.c|HAL_TLS_Connect(249): Connecting to /nq7gqn6ksr.iotcloud.tencentdevices.com/8883...
INF|2020-02-13 01:41:56|HAL_TLS_mbedtls.c|HAL_TLS_Connect(271): connected with /nq7gqn6ksr.iotcloud.tencentdevices.com/8883...
INF|2020-02-13 01:41:56|mqtt_client.c|IOT_MQTT_Construct(127): mqtt connect with id: 9Z39s success
INF|2020-02-13 01:41:56|raw_data_sample.c|main(306): Cloud Device Construct Success
DBG|2020-02-13 01:41:56|mqtt_client_subscribe.c|qcloud_iot_mqtt_subscribe(141): topicName=$thing/down/raw/NQ7GQN6KSR/dev001|packet_id=15330
INF|2020-02-13 01:41:56|raw_data_sample.c|_mqtt_event_handler(95): subscribe success, packet-id=15330
DBG|2020-02-13 01:41:57|raw_data_sample.c|_publish_raw_data_msg(223): raw_data published dump:

 AA 55 01 00 00 00 00 00 01 01 38 00
DBG|2020-02-13 01:41:57|mqtt_client_publish.c|qcloud_iot_mqtt_publish(340): publish packetID=0|topicName=$thing/up/raw/NQ7GQN6KSR/dev001|payload=

 DBG|2020-02-13 01:42:02|raw_data_sample.c|_publish_raw_data_msg(223): raw_data published dump:

 AA 55 01 00 01 00 00 00 01 00 54 00
DBG|2020-02-13 01:42:02|mqtt_client_publish.c|qcloud_iot_mqtt_publish(340): publish packetID=0|topicName=$thing/up/raw/NQ7GQN6KSR/dev001|payload=

```

- 收到下行数据并dump

```

INF|2020-02-13 01:47:23|raw_data_sample.c|on_raw_data_message_callback(235): Receive Message With topicName:$thing/down/raw/NQ7GQN6KSR/dev001, payloadlen:12
DBG|2020-02-13 01:47:23|raw_data_sample.c|on_raw_data_message_callback(237): raw_data reveived dump:

 AA 55 20 00 CC CC CC CC FF 01 FF FF
INF|2020-02-13 01:47:23|raw_data_sample.c|on_raw_data_message_callback(235): Receive Message With topicName:$thing/down/raw/NQ7GQN6KSR/dev001, payloadlen:12
DBG|2020-02-13 01:47:23|raw_data_sample.c|on_raw_data_message_callback(237): raw_data reveived dump:

 AA 55 20 00 CC CC CC CC FF 01 FF FF
 
```

###  6. 控制台日志

- 在线调试
![](https://main.qcloudimg.com/raw/5e8dd1b8efdc079a72ffb8d9e3b52830.png)

- 设备日志
![](https://main.qcloudimg.com/raw/9ee577ed46f1170531d444703c5968f9.png)