设备任务的功能例程运行后，功能的例程运行后，您可以在设备端和物联网平台查看日志信息。
前提条件
已配置C Link SDK的设备任务的功能例程，已配置C Link SDK的使用示例。
设备端日志
您可以在设备端查看运行结果。
连接日志：
[1626941694.977][LK-0313] MQTT user calls aiot_mqtt_connect api, connect [1626941694.977][LK-0317] LightSwitch&a1wP****** [1626941694.977][LK-0318] 9E2560C2D1F353A6908A5F7156A216101BA0E05DE3E447724D9F0DEEA6****** core_sysdep_network_establish host iot-06******.mqtt.iothub.aliyuncs.com port 1883, type 0 establish tcp connection with server(host='iot-06******.mqtt.iothub.aliyuncs.com', port=[1883]) success to establish tcp, fd=3 local port: 42304 [1626941695.066][LK-1000] establish mbedtls connection with server(host='iot-06******.mqtt.iothub.aliyuncs.com', port=[1883]) [1626941695.133][LK-1000] success to establish mbedtls connection， (cost 44947 bytes in total, max used 47859 bytes) [1626941695.133][LK-0319] a1wP******.LightSwitch|timestamp=2524608000000,_ss=1,_v=sdk-c-4.1.0,securemode=2,signmethod=hmacsha256,ext=3,_conn=tls_9a| [1626941695.200][LK-0313] MQTT connect success in 227 ms AIOT_MQTTEVT_CONNECT接收设备任务通知日志：
如果设备在线，从物联网平台下发消息后，设备端收到的日志消息如下：
[1626941940.144][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/notify [LK-030A] < 7B 22 69 64 22 3A 22 32 30 38 33 36 39 35 37 39 | {"id":"208369579 [LK-030A] < 35 22 2C 22 70 61 72 61 6D 73 22 3A 7B 22 74 61 | 5","params":{"ta [LK-030A] < 73 6B 22 3A 7B 22 6A 6F 62 44 6F 63 75 6D 65 6E | sk":{"jobDocumen [LK-030A] < 74 22 3A 7B 22 6B 65 79 22 3A 22 76 61 6C 75 65 | t":{"key":"value [LK-030A] < 22 7D 2C 22 6A 6F 62 46 69 6C 65 22 3A 7B 22 66 | "},"jobFile":{"f [LK-030A] < 69 6C 65 4B 65 79 22 3A 22 31 32 36 46 39 39 34 | ileKey":"126F994 [LK-030A] < 43 46 30 38 30 34 35 39 39 38 38 31 35 33 36 34 | CF08045998815364 [LK-030A] < 32 39 32 45 45 35 30 30 43 2F E9 98 BF E9 87 8C | 292******/...... [LK-030A] < E5 B7 AE E5 88 86 E5 B7 A5 E5 85 B7 2E 7A 69 70 | .............zip [LK-030A] < 22 2C 22 66 69 6C 65 55 72 6C 22 3A 22 68 74 74 | ","fileUrl":"htt [LK-030A] < 70 73 3A 2F 2F 69 6F 74 78 2D 74 68 69 6E 67 2D | ps://iotx-thing- [LK-030A] < 73 63 68 65 64 75 6C 65 72 2D 6A 6F 62 2D 66 69 | scheduler-job-fi [LK-030A] < 6C 65 2E 6F 73 73 2D 63 6E 2D 73 68 61 6E 67 68 | le.oss-cn-shangh [LK-030A] < 61 69 2E 61 6C 69 79 75 6E 63 73 2E 63 6F 6D 2F | ai.aliyuncs.com/ [LK-030A] < 31 32 36 46 39 39 34 43 46 30 38 30 34 35 39 39 | 126F994CF0804599 [LK-030A] < 38 38 31 35 33 36 34 32 39 32 45 45 35 30 30 43 | 8815364292EE500C [LK-030A] < 2F 25 45 39 25 39 38 25 42 46 25 45 39 25 38 37 | /%E9%98%BF%E9%87 [LK-030A] < 25 38 43 25 45 35 25 42 37 25 41 45 25 45 35 25 | %8C%E5%B7%AE%E5% [LK-030A] < 38 38 25 38 36 25 45 35 25 42 37 25 41 35 25 45 | 88%86%E5%B7%A5%E [LK-030A] < 35 25 38 35 25 42 37 2E 7A 69 70 3F 45 78 70 69 | 5******.zip?Expi [LK-030A] < 72 65 73 3D 31 36 32 36 39 34 35 35 34 30 26 4F | res=1626945540&O [LK-030A] < 53 53 41 63 63 65 73 73 4B 65 79 49 64 3D 4C 54 | SSAccessKeyId=LT [LK-030A] < 41 49 4D 6F 6A 37 47 49 67 6C 6A 7A 50 72 26 53 | AIMoj7GI******& [LK-030A] < 69 67 6E 61 74 75 72 65 3D 69 4B 6F 63 4B 41 54 | Signature=iKocKAT [LK-030A] < 43 50 38 54 30 47 70 6F 67 66 34 57 77 61 44 59 | CP8T0Gpogf4WwaDY [LK-030A] < 25 32 42 25 32 46 4F 4D 25 33 44 22 2C 22 73 69 | %2B%2******","si [LK-030A] < 67 6E 22 3A 22 37 32 30 37 63 35 32 64 64 33 31 | gn":"7207c52dd31 [LK-030A] < 34 64 30 65 66 66 37 33 33 30 30 39 64 64 36 63 | 4d0eff733009dd6c [LK-030A] < 35 66 63 61 39 22 2C 22 73 69 67 6E 4D 65 74 68 | 5fca9","signMeth [LK-030A] < 6F 64 22 3A 22 4D 64 35 22 7D 2C 22 74 61 73 6B | od":"Md5"},"task [LK-030A] < 49 64 22 3A 22 39 30 65 65 64 39 39 36 66 33 62 | Id":"90eed996f3b [LK-030A] < 33 34 62 30 38 38 63 62 31 32 64 38 36 33 38 34 | 34b088cb12d86384 [LK-030A] < 63 65 37 66 36 22 2C 22 73 74 61 74 75 73 22 3A | *****","status": [LK-030A] < 22 53 45 4E 54 22 7D 7D 2C 22 76 65 72 73 69 6F | "SENT"}},"versio [LK-030A] < 6E 22 3A 22 31 2E 30 2E 30 22 7D | n":"1.0.0"} [1626941940.144][LK-0B03] task recv notify revice task notify, task_id:[90eed996f3b34b088cb12d86384*****],status:[1],job_document[{"key":"value"}],document_file_url:[https://iotx-thing-scheduler-job-file.oss-cn-shanghai.aliyuncs.com/126F994CF08045998815364292EE500C/%E9%98%BF%E9%87%8C%E5%B7%AE%E5%88%86%E5%B7%A5%E5%85%B7.zip?Expires=1626945540&OSSAccessKeyId=LTAIMoj7GI******&Signature=iKocKATCP8T0Gpogf4WwaDY%2B%2******], sign_method:[Md5],sign[7207c52dd314d0eff733009dd6c5fca9]消息接收后，返回如下应答报文：
[1626941940.144][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/notify_reply [LK-030A] > 7B 22 69 64 22 3A 22 32 30 38 33 36 39 35 37 39 | {"id":"208369579 [LK-030A] > 35 22 2C 22 63 6F 64 65 22 3A 32 30 30 2C 22 64 | 5","code":200,"d [LK-030A] > 61 74 61 22 3A 7B 7D 7D | ata":{}}任务作业执行后，向物联网平台上报作业状态。
[1626941940.144][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/update [LK-030A] > 7B 22 69 64 22 3A 22 31 22 2C 22 76 65 72 73 69 | {"id":"1","versi [LK-030A] > 6F 6E 22 3A 22 31 2E 30 2E 30 22 2C 22 70 61 72 | on":"1.0.0","par [LK-030A] > 61 6D 73 22 3A 7B 22 74 61 73 6B 49 64 22 3A 22 | ams":{"taskId":" [LK-030A] > 39 30 65 65 64 39 39 36 66 33 62 33 34 62 30 38 | 90eed996f3b34b08 [LK-030A] > 38 63 62 31 32 64 38 36 33 38 34 63 65 37 66 36 | 8cb12d86384***** [LK-030A] > 22 2C 22 73 74 61 74 75 73 22 3A 22 49 4E 5F 50 | ","status":"IN_P [LK-030A] > 52 4F 47 52 45 53 53 22 2C 22 70 72 6F 67 72 65 | ROGRESS","progre [LK-030A] > 73 73 22 3A 30 7D 7D | ss":0}} [物联网接收作业状态消息后，返回如下应答报文。
1626941940.255][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/update_reply [LK-030A] < 7B 22 63 6F 64 65 22 3A 32 30 30 2C 22 64 61 74 | {"code":200,"dat [LK-030A] < 61 22 3A 7B 22 74 61 73 6B 49 64 22 3A 22 39 30 | a":{"taskId":"90 [LK-030A] < 65 65 64 39 39 36 66 33 62 33 34 62 30 38 38 63 | eed996f3b34b088c [LK-030A] < 62 31 32 64 38 36 33 38 34 63 65 37 66 36 22 7D | b12d86384*****"} [LK-030A] < 2C 22 69 64 22 3A 22 31 22 2C 22 6D 65 74 68 6F | ,"id":"1","metho [LK-030A] < 64 22 3A 22 74 68 69 6E 67 2E 6A 6F 62 2E 75 70 | d":"thing.job.up [LK-030A] < 64 61 74 65 22 2C 22 76 65 72 73 69 6F 6E 22 3A | date","version": [LK-030A] < 22 31 2E 30 22 7D | "1.0"} revice task update reply, code:[200] revice task update reply, task_id:[90eed996f3b34b088cb12d86384*****]
设备主动获取设备任务日志：
设备上线后，向物联网平台发起获取设备任务请求。
[1626949668.599][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/get [LK-030A] > 7B 22 69 64 22 3A 22 31 22 2C 22 76 65 72 73 69 | {"id":"1","versi [LK-030A] > 6F 6E 22 3A 22 31 2E 30 2E 30 22 2C 22 70 61 72 | on":"1.0.0","par [LK-030A] > 61 6D 73 22 3A 7B 22 74 61 73 6B 49 64 22 3A 22 | ams":{"taskId":" [LK-030A] > 24 6E 65 78 74 22 7D 7D | $next"}}物联网平台接收请求后，返回应答报文。
[1626949668.799][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/get_reply [LK-030A] < 7B 22 63 6F 64 65 22 3A 32 30 30 2C 22 64 61 74 | {"code":200,"dat [LK-030A] < 61 22 3A 7B 22 74 61 73 6B 22 3A 7B 22 6A 6F 62 | a":{"task":{"job [LK-030A] < 44 6F 63 75 6D 65 6E 74 22 3A 7B 22 6B 65 79 22 | Document":{"key" [LK-030A] < 3A 22 76 61 6C 75 65 22 7D 2C 22 6A 6F 62 46 69 | :"value"},"jobFi [LK-030A] < 6C 65 22 3A 7B 22 66 69 6C 65 55 72 6C 22 3A 22 | le":{"fileUrl":" [LK-030A] < 68 74 74 70 73 3A 2F 2F 69 6F 74 78 2D 74 68 69 | https://iotx-thi [LK-030A] < 6E 67 2D 73 63 68 65 64 75 6C 65 72 2D 6A 6F 62 | ng-scheduler-job [LK-030A] < 2D 66 69 6C 65 2E 6F 73 73 2D 63 6E 2D 73 68 61 | -file.oss-cn-sha [LK-030A] < 6E 67 68 61 69 2E 61 6C 69 79 75 6E 63 73 2E 63 | nghai.aliyuncs.c [LK-030A] < 6F 6D 2F 31 32 36 46 39 39 34 43 46 30 38 30 34 | om/126F994CF0804 [LK-030A] < 35 39 39 38 38 31 35 33 36 34 32 39 32 45 45 35 | 5998815364292EE5 [LK-030A] < 30 30 43 2F 30 36 30 34 31 38 31 31 30 32 37 39 | 00C/060418110279 [LK-030A] < 5F 30 4D 51 54 54 25 45 36 25 38 45 25 41 35 25 | _0MQTT%E6%8E%A5% [LK-030A] < 45 35 25 38 35 25 41 35 25 45 36 25 42 35 25 38 | E5%85%A5%E6%B5%8 [LK-030A] < 31 25 45 37 25 41 38 25 38 42 25 45 35 25 39 42 | 1%E7%A8%8B%E5*** [LK-030A] < 25 42 45 2E 7A 69 70 3F 45 78 70 69 72 65 73 3D | ***.zip?Expires= [LK-030A] < 31 36 32 36 39 35 33 32 36 38 26 4F 53 53 41 63 | 1626953268&OSSAc [LK-030A] < 63 65 73 73 4B 65 79 49 64 3D 4C 54 41 49 4D 6F | cessKeyId=LTAIMo [LK-030A] < 6A 37 47 49 67 6C 6A 7A 50 72 26 53 69 67 6E 61 | j7GI******&Signature [LK-030A] < 74 75 72 65 3D 73 64 25 32 42 50 37 50 43 4B 41 | =sd%2BP7PCKA [LK-030A] < 73 77 4E 4D 33 4D 25 32 46 4B 72 7A 70 57 66 4D | swNM3M%2FKrzpWfM [LK-030A] < 41 6F 72 63 25 33 44 22 2C 22 73 69 67 6E 22 3A | A******","sign": [LK-030A] < 22 62 36 63 61 64 31 66 65 62 66 62 64 63 66 38 | "b6cad1febfbdcf8 [LK-030A] < 65 31 38 64 66 38 33 34 35 31 34 37 64 31 34 33 | e18df834514***** [LK-030A] < 62 22 2C 22 73 69 67 6E 4D 65 74 68 6F 64 22 3A | b","signMethod": [LK-030A] < 22 4D 64 35 22 7D 2C 22 74 61 73 6B 49 64 22 3A | "Md5"},"taskId": [LK-030A] < 22 37 65 66 65 63 66 33 65 32 33 64 34 34 30 66 | "7efecf3e23d440f [LK-030A] < 36 62 32 34 31 36 33 62 30 38 65 36 32 32 32 39 | 6b24163b08e***** [LK-030A] < 34 22 2C 22 73 74 61 74 75 73 22 3A 22 49 4E 5F | *","status":"IN_ [LK-030A] < 50 52 4F 47 52 45 53 53 22 7D 2C 22 74 61 73 6B | PROGRESS"},"task [LK-030A] < 49 64 22 3A 22 24 6E 65 78 74 22 7D 2C 22 69 64 | Id":"$next"},"id [LK-030A] < 22 3A 22 31 22 2C 22 6D 65 74 68 6F 64 22 3A 22 | ":"1","method":" [LK-030A] < 74 68 69 6E 67 2E 6A 6F 62 2E 67 65 74 22 2C 22 | thing.job.get"," [LK-030A] < 76 65 72 73 69 6F 6E 22 3A 22 31 2E 30 22 7D | version":"1.0"} revice task get detail, code:[200] revice task get detail reply, task_id:[7efecf3e23d440f6b24163b08e622294],status:[2] job_document[{"key":"value"}],document_file_url:[https://iotx-thing-scheduler-job-file.oss-cn-shanghai.aliyuncs.com/126F994CF08045998815364292EE500C/060418110279_0MQTT%E6%8E%A5%E5%85%A5%E6%B5%81%E7%A8%8B%E5%9B%BE.zip?Expires=1626953268&OSSAccessKeyId=LTAIMoj7GI******&Signature=sd%2BP7PCKAswNM3M%2FKrzpWfMA******], sign_method:[Md5],sign[b6cad1febfbdcf8e18df834514*****b]任务作业执行后，向物联网平台上报作业状态。
[1626949668.799][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/update [LK-030A] > 7B 22 69 64 22 3A 22 32 22 2C 22 76 65 72 73 69 | {"id":"2","versi [LK-030A] > 6F 6E 22 3A 22 31 2E 30 2E 30 22 2C 22 70 61 72 | on":"1.0.0","par [LK-030A] > 61 6D 73 22 3A 7B 22 74 61 73 6B 49 64 22 3A 22 | ams":{"taskId":" [LK-030A] > 37 65 66 65 63 66 33 65 32 33 64 34 34 30 66 36 | 7efecf3e23d440f6 [LK-030A] > 62 32 34 31 36 33 62 30 38 65 36 32 32 32 39 34 | b24163b08e****** [LK-030A] > 22 2C 22 73 74 61 74 75 73 22 3A 22 49 4E 5F 50 | ","status":"IN_P [LK-030A] > 52 4F 47 52 45 53 53 22 2C 22 70 72 6F 67 72 65 | ROGRESS","progre [LK-030A] > 73 73 22 3A 38 38 7D 7D | ss":88}}物联网接收作业状态消息后，返回如下应答报文。
[1626949668.855][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/job/update_reply [LK-030A] < 7B 22 63 6F 64 65 22 3A 32 30 30 2C 22 64 61 74 | {"code":200,"dat [LK-030A] < 61 22 3A 7B 22 74 61 73 6B 49 64 22 3A 22 37 65 | a":{"taskId":"7e [LK-030A] < 66 65 63 66 33 65 32 33 64 34 34 30 66 36 62 32 | fecf3e23d440f6b2 [LK-030A] < 34 31 36 33 62 30 38 65 36 32 32 32 39 34 22 7D | 4163b08e******"} [LK-030A] < 2C 22 69 64 22 3A 22 32 22 2C 22 6D 65 74 68 6F | ,"id":"2","metho [LK-030A] < 64 22 3A 22 74 68 69 6E 67 2E 6A 6F 62 2E 75 70 | d":"thing.job.up [LK-030A] < 64 61 74 65 22 2C 22 76 65 72 73 69 6F 6E 22 3A | date","version": [LK-030A] < 22 31 2E 30 22 7D | "1.0"} revice task update reply, code:[200] revice task update reply, task_id:[7efecf3e23d440f6b24163b08e******]
物联网平台日志
您可以在物联网平台控制台查看设备的状态和运行日志。
在线状态：
在左侧导航栏，选择设备管理设备，找到设备，查看设备状态。设备状态显示为在线，则表示设备与物联网平台成功连接。
设备任务执行情况：
在左侧导航栏，选择设备管理任务，在任务列表，查看设备任务的执行情况。
运行日志：
在左侧导航栏，选择监控运维日志服务，选择产品后，查看设备上线、订阅Topic和上报消息的日志。
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