[SOLVED] The Thing Stack Plugin - decode TTS payload

Ubidots API
,
1

Im currently trying to migrate my TTN devices over from using Functions to using the TTS Plugin.

Follwing the Ubitdots tutorial for setup here. F Port, Frame Counter, rssi and snr variables are displayed as a new device in ubidots, however im having trouble with the TTS device’s decoded payload not creating device variables in Ubitdots. I have also uncommented the line below as instructed in the ubidots TTS decoder script.

var decoded_payload = args['uplink_message']['decoded_payload'];

Below is the plugin log with device (current device is a Dragino Soil Moisture Probe - LSE01)

2021-09-30T01:46:39.036149Z stderr: raven@2.6.4 alert: no DSN provided, error reporting disabled
2021-09-30T01:46:39.047002Z stdout: [INFO] Received args:
2021-09-30T01:46:39.047328Z stdout: {"_parameters":{"token":"TOKEN REMOVED","device_type":"tts-devices","plugin_version_id":"614d7a38bceb5c0707b9d509","is_new_webhook_url":true,"_plugin_env_BASE_URL":"https://industrial.api.ubidots.com","_plugin_env_tti_main_color":"#0040E5","_plugin_env_tti_secondary_color":"#6C95FF"},"correlation_ids":["as:up:01FGT63M4SGX6BVJPPY77NVR54","gs:conn:01FG16AF2W7NZQAPBX4JNKBK59","gs:up:host:01FG16ANAWE2ZRQKCKNNBTHJV8","gs:uplink:01FGT63KX1RDGXC9ECXXR2GP5E","ns:uplink:01FGT63KX4N5JGFFXKBW53FN40","rpc:/ttn.lorawan.v3.GsNs/HandleUplink:01FGT63KX4S0JMKK3F1WZZ5K44","rpc:/ttn.lorawan.v3.NsAs/HandleUplink:01FGT63M4RPDV47G8A06DARD0C"],"end_device_ids":{"application_ids":{"application_id":"windorahlse01"},"dev_addr":"REMOVED","dev_eui":"REMOVED","device_id":"lse012412-1","join_eui":"A000000000000101"},"received_at":"2021-09-30T01:46:38.106745571Z","uplink_message":{"consumed_airtime":"0.061696s","decoded_payload":{"Bat":3.322,"TempC_DS18B20":"0.00","conduct_SOIL":2,"temp_SOIL":"13.47","water_SOIL":"4.57"},"f_cnt":10560,"f_port":2,"frm_payload":"DPoAAAHJBUMAAgA=","network_ids":{"cluster_id":"ttn-au1","net_id":"000013","tenant_id":"ttn"},"received_at":"2021-09-30T01:46:37.860135992Z","rx_metadata":[{"channel_index":4,"channel_rssi":-44,"gateway_ids":{"eui":"60C5A8FFFE76F85F","gateway_id":"windorah001"},"location":{"altitude":365,"latitude":-32.870143,"longitude":117.578888,"source":"SOURCE_REGISTRY"},"rssi":-44,"snr":9.5,"time":"2021-09-30T01:46:37.805811Z","timestamp":2148355787,"uplink_token":"ChkKFwoLd2luZG9yYWgwMDESCGDFqP/+dvhfEMudtYAIGgwI/a3UigYQo677mAMg+JHvn8P1vgE="}],"session_key_id":"AXtsrkxsAVkGbGYrTUhtCQ==","settings":{"coding_rate":"4/5","data_rate":{"lora":{"bandwidth":125000,"spreading_factor":7}},"data_rate_index":5,"frequency":"917600000","time":"2021-09-30T01:46:37.805811Z","timestamp":2148355787},"version_ids":{"band_id":"AU_915_928","brand_id":"dragino","firmware_version":"1.3","hardware_version":"_unknown_hw_version_","model_id":"lse01"}}}

and returned JSON

{
  "success": true,
  "message": {
    "results": [
      {
        "f_cnt": [
          {
            "status_code": 201
          }
        ],
        "f_port": [
          {
            "status_code": 201
          }
        ],
        "rssi-windorah001": [
          {
            "status_code": 201
          }
        ],
        "snr-windorah001": [
          {
            "status_code": 201
          }
        ]
      }
    ]
  }
}

The below link is the device payload decoder im using in TTS - here
Note i have removed any measurement unit text from each variable decoded.

TTS
TTS1637×36 11.9 KB

I realise this is probably a lack of knowledge of JS, and have read the Ubidots Docs regarding this, but cannot get it happening! Any help is appreciated.

thanks

2

Hello, windorah

I’m Santiago from Ubidots, we hope you’re doing great,

We have verified the plugin’s decoding function, all it was needed was to comment out the following lines:

let bytes =  Buffer.from(args['uplink_message']['frm_payload'], 'base64');
var decoded_payload = decodeUplink(bytes)['data'];

Please check on your device if the variables were created and updated with the decoded data.

Regards.

3

Hi Santiago,

I can confirm the payload from TTS is now coming through. Perhaps a few extra lines of comments indicating to comment out some lines in the standard Ubidots decoder could help this situation.

Many thanks

Rowan

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