Decoding Base64 Packets from REST API (for Multitech Gateways)

Links to API Reference

Description	Link

Description	Link
General API Reference	https://www.multitech.net/developer/software/mtr-software/mtr-api-reference/
API Reference for LoRa packets (uplinks, downlinks, Join Requests, device list etc.)	https://www.multitech.net/developer/software/mtr-software/mtr-api-reference/collection-endpoints/lora/

Decoding Base64 Packets from REST API

Example API Call to view Uplink Messages
Request:

192.xx.xx.xx/api/lora/packets/up
<Enter your Gateway IP Address>

Response:

"code" : 200,
   "result" : [
        {
         "appeui" : "31-20-03-21-ec-61-07-00",
         "channel" : 3,
         "coderate" : "4/5",
         "commands" : "",
         "control" : "00",
         "counter" : "00000023",
         "created_at" : "2023-05-17T08:42:44Z",
         "data" : "GykvU1MAhAIAEBs=",
         "data_size" : 24,
         "datarate" : "SF7BW125",
         "dev_addr" : "017b5cb4",
         "deveui" : "39-33-30-31-77-31-73-13",
         "frequency" : 867.0999755859375,
         "gweui" : "00-80-00-00-00-01-8c-8a",
         "major_version" : 0,
         "message_type" : 2,
         "mic" : "f8fddcd8",
         "modulation" : "LORA",
         "port" : 1,
         "rf_chain" : 1,
         "rssi" : -25,
         "rx_time" : "2023-05-17T08:42:44Z",
         "size" : 24,
         "snr" : 9.5,
         "tmst" : 1704795635
      },

The "data" field contains the uplink data in Base64 format.
- "data" : "GykvU1MAhAIAEBs="
Paste the Base64 Payload into the Excel Tool MLR003 Payload Encoder/Decoder (Uplink Decoder Sheet) and Click Convert to view the decoded messages
The Excel decoder output will be as follows