After you run the sample code to download an OTA update package that contains a single file over MQTT, After you use the sample code to connect a device to IoT Platform over Message Queuing Telemetry Transport (MQTT), you can view logs on the device.
Prerequisites
The ./demos/mota_basic_demo.c sample code file is configured.For more information, see Sample code.
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.[1635150280.422][LK-0313] MQTT user calls aiot_mqtt_connect api, connect [1635150280.422][LK-032A] mqtt host: iot-******.iot-as-mqtt.unify.aliyuncs.com [1635150280.422][LK-0317] user name: LightSwitch&/a18wP****** [1635150280.422][LK-0318] password: A5C6EBEFDE263E8A473C10E3F03CCAE069E56E8F6AC1081BAE628BA2D0****** success to establish tcp, fd=3 local port: 32826 [1635150280.433][LK-1000] establish mbedtls connection with server(host='iot-******.iot-as-mqtt.unify.aliyuncs.com', port=[1883]) [1635150280.499][LK-1000] success to establish mbedtls connection, (cost 45250 bytes in total, max used 47986 bytes) [1635150280.633][LK-0313] MQTT connect success in 210 ms AIOT_MQTTEVT_CONNECTLogs generated when version numbers are submitted
The following log data indicates that the device submits the initial version number1.0.0.[1579511737.522][LK-0309] pub: /ota/device/inform/a18wP******/LightSwitch [LK-030A] > 7B 22 69 64 22 3A 30 2C 20 22 70 61 72 61 6D 73 | {"id":0, "params [LK-030A] > 22 3A 7B 22 76 65 72 73 69 6F 6E 22 3A 22 31 2E | ":{"version":"1. [LK-030A] > 30 2E 30 22 7D 7D | 0.0"}}Logs generated when OTA update commands are received
The following log data indicates that the device receives a command after you create an OTA update task in IoT Platform and add an update package that contains a single file.[1635150286.199][LK-0309] pub: /ota/device/upgrade/a18wP******/LightSwitch [LK-030A] < 7B 22 63 6F 64 65 22 3A 22 31 30 30 30 22 2C 22 | {"code":"1000"," [LK-030A] < 64 61 74 61 22 3A 7B 22 73 69 7A 65 22 3A 35 37 | data":{"size":57 [LK-030A] < 33 34 2C 22 73 74 72 65 61 6D 49 64 22 3A 39 30 | 34,"streamId":90 [LK-030A] < 2C 22 73 69 67 6E 22 3A 22 63 37 38 63 65 33 33 | ,"sign":"c78ce33 [LK-030A] < 62 62 63 64 39 30 31 35 30 36 37 65 33 61 61 38 | bbcd9015067e3aa8 [LK-030A] < 61 64 34 64 63 31 30 39 31 22 2C 22 64 50 72 6F | ad4******","dPro [LK-030A] < 74 6F 63 6F 6C 22 3A 22 6D 71 74 74 22 2C 22 76 | tocol":"mqtt","v [LK-030A] < 65 72 73 69 6F 6E 22 3A 22 34 2E 32 2E 30 22 2C | ersion":"4.2.0", [LK-030A] < 22 73 69 67 6E 4D 65 74 68 6F 64 22 3A 22 4D 64 | "signMethod":"Md [LK-030A] < 35 22 2C 22 73 74 72 65 61 6D 46 69 6C 65 49 64 | 5","streamFileId [LK-030A] < 22 3A 31 2C 22 6D 64 35 22 3A 22 63 37 38 63 65 | ":1,"md5":"c78ce [LK-030A] < 33 33 62 62 63 64 39 30 31 35 30 36 37 65 33 61 | 33bbcd9015067e3a [LK-030A] < 61 38 61 64 34 64 63 31 30 39 31 22 7D 2C 22 69 | a8ad4******"},"i [LK-030A] < 64 22 3A 31 36 33 35 31 35 30 32 38 36 31 38 37 | d":1635150****** [LK-030A] < 2C 22 6D 65 73 73 61 67 65 22 3A 22 73 75 63 63 | ,"message":"succ [LK-030A] < 65 73 73 22 7D | ess"}- Logs generated when you send a request to obtain the update file:
[1635150286.199][LK-0309] pub: /sys/a18wP******/LightSwitch/thing/file/download [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 22 2C 22 70 61 72 61 6D | on":"1.0","param [LK-030A] > 73 22 3A 7B 22 66 69 6C 65 54 6F 6B 65 6E 22 3A | s":{"fileToken": [LK-030A] > 22 64 65 66 61 75 6C 74 22 2C 22 66 69 6C 65 49 | "default","fileI [LK-030A] > 6E 66 6F 22 3A 7B 22 73 74 72 65 61 6D 49 64 22 | nfo":{"streamId" [LK-030A] > 3A 39 30 2C 22 66 69 6C 65 49 64 22 3A 31 2C 7D | :90,"fileId":1,} [LK-030A] > 2C 22 66 69 6C 65 42 6C 6F 63 6B 22 3A 7B 22 73 | ,"fileBlock":{"s [LK-030A] > 69 7A 65 22 3A 31 30 32 34 2C 22 6F 66 66 73 65 | ize":1024,"offse [LK-030A] > 74 22 3A 30 7D 7D 7D | t":0}}} - Logs generated when IoT Platform returns the update file:
[1635150287.455][LK-0309] pub: /sys/a18wP******/LightSwitch/thing/file/download_reply [LK-030A] < 00 73 7B 22 63 6F 64 65 22 3A 32 30 30 2C 22 64 | .s{"code":200,"d [LK-030A] < 61 74 61 22 3A 7B 22 66 69 6C 65 54 6F 6B 65 6E | ata":{"fileToken [LK-030A] < 22 3A 22 64 65 66 61 75 6C 74 22 2C 22 62 4F 66 | ":"default","bOf [LK-030A] < 66 73 65 74 22 3A 30 2C 22 66 69 6C 65 4C 65 6E | fset":0,"fileLen [LK-030A] < 67 74 68 22 3A 35 37 33 34 2C 22 62 53 69 7A 65 | gth":5734,"bSize [LK-030A] < 22 3A 31 30 32 34 7D 2C 22 69 64 22 3A 22 31 22 | ":1024},"id":"1" [LK-030A] < 2C 22 6D 65 73 73 61 67 65 22 3A 22 73 75 63 63 | ,"message":"succ [LK-030A] < 65 73 73 22 7D 50 4B 03 04 0A 00 00 00 00 00 47 | ess"}PK........G [LK-030A] < 84 7A 51 00 00 00 00 00 00 00 00 00 00 00 00 0C | .zQ............. [LK-030A] < 00 1C 00 61 69 6F 74 5F 63 5F 64 65 6D 6F 2F 55 | ...aiot_c_demo/U [LK-030A] < 54 09 00 03 85 68 BF 5F 86 68 BF 5F 75 78 0B 00 | T....h._.h._ux.. [LK-030A] < 01 04 A5 2C 14 00 04 64 00 00 00 50 4B 03 04 14 | ...,...d...PK... [LK-030A] < 00 00 00 08 00 56 4F 7D 4F AB 76 00 7E 7A 06 00 | .....VO}O.v.~z.. [LK-030A] < 00 CF 0F 00 00 19 00 1C 00 61 69 6F 74 5F 63 5F | .........aiot_c_ [LK-030A] < 64 65 6D 6F 2F 61 69 6F 74 5F 63 5F 64 65 6D 6F | demo/aiot_c_demo [LK-030A] < 2E 63 55 54 09 00 03 54 7B E0 5D CA 62 BF 5F 75 | .cUT...T{.].b._u [LK-030A] < 78 0B 00 01 04 A5 2C 14 00 04 64 00 00 00 AD 57 | x.....,...d....W [LK-030A] < 6D 6F D3 48 10 FE 9C FC 8A 21 A8 28 49 1D 27 01 | mo.H.....!.(I.'. [LK-030A] < 0A 88 52 A4 36 CD 1D 11 B4 14 1A DE C4 9D AA ED | ..R.6........... [LK-030A] < 7A 63 EF D5 F6 FA BC EB A4 3D D4 FF 7E 33 BB B6 | zc.......=..~3.. [LK-030A] < E3 94 70 A7 D3 61 A9 69 3C 33 3B AF CF CC 4E 86 | ..p..a.i<3;...N. [LK-030A] < FD 9F FB B4 A1 0F 13 95 DD E4 32 8C 0C 74 79 0F | ..........2..ty. [LK-030A] < 1E 8E C6 0F 3D FA 7C 02 B3 A3 13 64 E6 99 8F 52 | ....=.|....d...R [LK-030A] < 24 78 18 C7 60 05 35 E4 42 8B 7C 29 02 1F E6 91 | $x..`.5.B.|).... [LK-030A] < D4 90 E5 2A CC 59 02 2C 0D C0 44 02 18 E7 2A C9 | ...*.Y.,..D...*. [LK-030A] < 58 7A 23 D3 10 12 66 44 2E 59 AC 49 07 CB 05 12 | Xz#...fD.Y.I.... [LK-030A] < 02 14 59 32 19 B3 CB 58 40 91 06 22 B7 C7 50 2E | ..Y2...X@.."..P. [LK-030A] < D1 A0 16 F6 65 CA 63 99 69 01 67 C5 65 2C 39 BC | ....e.c.i.g.e,9. [LK-030A] < 91 5C A4 F8 BA 1C FB 23 AB 08 4D 55 22 C7 52 9B | .\.....#..MU".R. [LK-030A] < 5C 5E 16 46 AA 74 43 10 56 91 E4 D1 DA 1D 54 8C | \^.F.tC.V.....T. [LK-030A] < DE 06 0D 71 1F CA E0 E6 3F 36 89 47 D6 DE 32 43 | ...q....?6.G..2C [LK-030A] < 27 00 20 32 26 7B 3E 1C AE 56 2B 5F B8 73 BE CA | '. 2&{>..V+_.s.. [LK-030A] < C3 61 2C 42 16 0F 45 16 0F 96 E3 91 1F 99 24 AE | .a,B..E.......$. [LK-030A] < BC 6D 06 B5 D5 E3 FF 64 87 FE 02 C5 8B 44 A4 46 | .m.....d.....D.F [LK-030A] < 0F 45 E0 EC 65 51 5D AD 89 4A 9D 09 95 EB E7 4E | .E..eQ]..J.....N [LK-030A] < 15 CC 58 0A 93 9C 85 A1 86 01 C8 54 1A 2C 0B F0 | ..X........T.,.. [LK-030A] < 4A 10 7D D9 26 C7 23 96 86 02 02 11 CB 44 62 89 | J.}.&.#......Db. [LK-030A] < 40 65 D6 ED 45 AE 12 62 62 ED 14 50 38 69 58 1E | @e..E..bb..P8iX. [LK-030A] < 3F 8C E1 DC 28 7E 15 C8 38 1E 9C 30 5B DF 01 7C | ?...(~..8..0[..| [LK-030A] < 14 B9 A6 73 85 26 54 50 36 44 72 29 82 40 04 30 | ...s.&TP6Dr).@.0 [LK-030A] < 01 8C 0C 03 D9 66 BE C8 02 04 10 9C BC 9B CF 27 | .....f.........' [LK-030A] < 56 08 16 45 CA AD 07 29 4B 04 A1 EA E7 3E C3 76 | V..E...)K....>.v [LK-030A] < FB BE 4C 79 5C 20 4A 5F 68 13 48 E5 47 2F 1B A4 | ..Ly\ J_h.H.G/.. [LK-030A] < 44 24 2A BF D9 A0 75 D6 DE F9 51 E7 5F CE 6B 19 | D$*...u...Q._.k. [LK-030A] < A6 2C BE 43 BB D1 43 23 13 41 D4 F6 FD 40 2C 64 | .,.C..C#.A...@,d [LK-030A] < 8A 60 F9 7C 78 72 F6 66 7A 71 F6 FE ED F1 87 C9 | .`.|xr.fzq...... [LK-030A] < FC E2 F5 F4 4B AB D5 EA B0 F1 F8 5A E7 9F 92 4F | ....K......Z...O [LK-030A] < E3 C7 9D EF 64 8F A7 1F 67 93 E9 C5 E9 E1 C9 94 | ....d...g....... [LK-030A] < 64 33 16 A9 8B E4 4F 63 7E 28 79 3E 9D BC 9F CE | d3....Oc~(y>.... [LK-030A] < C1 3D 9D 2F CF 9E 3E 3D 0A D5 B3 CF 7B 6A 15 3C | .=./..>=....{j.< [LK-030A] < 8A F9 D1 DE EA D3 F1 1F F9 CD E9 99 3A FA 10 C8 | ............:... [LK-030A] < 57 18 DB B0 8F 50 E0 31 35 B2 AD E1 35 42 02 E3 | W....P.15...5B.. [LK-030A] < 59 57 85 49 65 4E D0 E4 39 C6 D9 ED 01 E6 D3 C9 | YW.IeN..9....... [LK-030A] < 20 E0 CC 26 13 91 A7 8D 83 50 1F 47 48 50 70 F3 | ..&.....P.GHPp. [LK-030A] < 5A DC 78 D0 A4 07 62 89 ED 71 8A 95 DE 46 3F 17 | Z.x...b..q...F?. [LK-030A] < 3C 17 C6 C3 56 D9 F6 B4 AC A8 83 D6 2C F8 3A DE | <...V.......,.:. [LK-030A] < 1B FD EE B9 E3 85 26 A7 13 F1 F5 C9 5E 45 CA 98 | ......&.....^E.. [LK-030A] < D6 2B 95 07 44 EA ED B7 DB 4B 15 33 23 B1 13 C9 | .+..D....K.3#... [LK-030A] < 6D A3 10 D0 19 1C C0 C8 72 64 00 1C 93 29 75 D4 | m.......rd...)u. [LK-030A] < 25 2E 56 B4 D7 FE D6 6E B9 CA 76 CF 67 BF CE 4E | %.V....n..v.g..N [LK-030A] < E7 1E 9C 7E 78 F3 06 35 B5 EA C3 E3 FD F6 6D 79 | ...~x..5......my [LK-030A] < 1C 81 AB 59 28 0E F3 5C E2 18 ED 9E B8 D7 63 66 | ...Y(..\......cf [LK-030A] < 58 1F 92 C0 6A 23 4C 95 F4 7E 25 8F 4A 92 60 F0 | X...j#L..~%.J.`. [LK-030A] < B2 7C 43 5F 5A 19 F6 9D 59 74 3B 3B 7E 5F FF 66 | .|C_Z...Yt;;~_.f [LK-030A] < 3A 9E E5 A3 39 C9 29 67 83 97 31 8E 16 DB 9B 3E | :...9.)g..1....> [LK-030A] < 7E FB 07 2E 36 19 23 67 37 F4 A5 A8 8F 22 EC 95 | ~...6.#g7....".. [LK-030A] < 06 07 2F 33 76 13 2B 16 58 5D 5D CA 5B FF 3B 5E | ../3v.+.X]].[.;^ [LK-030A] < CF 46 89 30 49 98 4C D7 B0 40 1C 50 AE 88 68 93 | .F.0I.L..@.P..h. [LK-030A] < C6 F2 90 BB D4 F7 E9 5A 08 97 36 68 E2 E4 BC 4C | .......Z..6h...L [LK-030A] < 74 0B 95 68 61 8A CC 22 ED B2 58 2C 44 EE 81 44 | t..ha.."..X,D..D [LK-030A] < 25 05 E2 E0 52 86 20 52 55 84 11 2C 54 0E 2C 96 | %...R. RU..,T.,. [LK-030A] < 37 45 0A 33 35 79 56 | 7E.35yV [1635150287.455][LK-0000] header : {"code":200,"data":{"fileToken":"default","bOffset":0,"fileLength":5734,"bSize":1024},"id":"1","message":"success"}PK download 017% done, +1024 bytes - Logs generated when the update file is downloaded:
[1635150288.688][LK-0901] digest matched [1635150293.688][LK-0309] pub: /ota/device/progress/a18wP******/LightSwitch [LK-030A] > 7B 22 69 64 22 3A 37 2C 20 22 70 61 72 61 6D 73 | {"id":7, "params [LK-030A] > 22 3A 7B 22 73 74 65 70 22 3A 22 31 30 30 22 2C | ":{"step":"100", [LK-030A] > 22 64 65 73 63 22 3A 22 22 7D 7D | "desc":""}}
IoT Platform logs
Log on to the IoT Platform console to view the device status and operation logs.
Information about the OTA update package
In the left-side navigation pane, choose . On the Update Packages tab, view the information about the update package. For more information, see View update status.Device status
In the left-side navigation pane, choose . Then, find the device and view the device status. If the value in the State/Enabled column is Online, the device is connected to IoT Platform.
Update logs
In the left-side navigation pane, choose . Select a product to view the logs that are generated when the device goes online, the device submits the version number, and IoT Platform pushes the OTA update package.