IoT Platform:View logs

Device logs

You can view the running result on the device.

• Device connection logs

  The following log data indicates that the device is connected to IoT Platform.

  [1578054042.600][LK-0313] MQTT user calls aiot_mqtt_connect api, connect
  [1578054042.600][LK-0317] LightSwitch&a18wP******
  [1578054042.600][LK-0318] 24FEB95E42CADB18D0E093F412E6AC27705AA8DF6DB3B649566728E685******
  [1578054042.600][LK-0319] a18wP******.LightSwitch|timestamp=2524608000000,_ss=1,_v=sdk-c-4.0.0,securemode=2,signmethod=hmacsha256,ext=1,|
  establish mbedtls connection with server(host='a18wP******.iot-as-mqtt.cn-shanghai.aliyuncs.com', port=[1883])
  success to establish mbedtls connection, fd = 3
  [1578054042.711][LK-0313] MQTT connect success
  AIOT_MQTTEVT_CONNECT

• Logs about message receiving

  After you call the RRpc operation of IoT Platform to send the ping command to a custom topic, such as /a18wP******/LightSwitch/user/get, the following log data is generated on the device.

  • Log data:

    [1578054379.700][LK-0309] pub: /ext/rrpc/1213074107617******/a18wP******/LightSwitch/user/get
    
    [LK-030A] < 70 69 6E 67                                      | ping
    
    pub, qos: 0, topic: 1213074107617******/a18wP******/LightSwitch/user/get
    pub, payload: ping

  • Log description:

    /ext/rrpc/1213074107617******/a18wP******/LightSwitch/user/get indicates the topic to which the RRPC message is sent. 1213074107617****** indicates the message ID. ping indicates the message payload. For more information, see Use custom topics (recommended).

• Logs about device response

  After the device receives the RRPC message, the device sends a response. The following log data is printed:

  [1578054379.700][LK-0309] pub: /ext/rrpc/1213074107617******/a18wP******/LightSwitch/user/get
  
  [LK-030A] > 70 6F 6E 67                                      | pong

IoT Platform logs

You can log on to the IoT Platform console . In the left-side navigation pane, choose Maintenance > Device Log. Select a product to view the communication logs of the device.