Device model not selected when using a QR code for registration.

[alexandre-humbert]

Summary

When I register a device using a QR code, only the brand is automatically filled. I have to manually choose the model despite the QR code containing the vendor profile ID and the device repository containing the device.

Steps to Reproduce

1. Register an end device using a qrcode (format tr005)

Current Result

Only the brand is automatically filled out in the form.

Expected Result

I expect Brand, Model, Hardware Version and Software version correctly filled out with the data from the QR code and the device repository.

Relevant Logs

qrcode parser response:
{
    "format_id": "tr005",
    "end_device_template": {
        "end_device": {
            "ids": {
                "dev_eui": "AABBCCDDEEFF0011",
                "join_eui": "1122334455667788"
            },
            "claim_authentication_code": {},
            "lora_alliance_profile_ids": {
                "vendor_id": 1115,
                "vendor_profile_id": 22074
            }
        },
        "field_mask": {
            "paths": [
                "ids",
                "claim_authentication_code"
            ]
        }
    }
}


Request: /api/v3/dr/applications/sept-s/vendors/1115/profiles/22074/template
Response:
{
  "end_device": {
    "version_ids": {
      "brand_id": "sept-s",
      "model_id": "tg563a",
      "hardware_version": "1.0",
      "firmware_version": "1.0",
      "band_id": "EU_863_870"
    },
    "lorawan_version": "MAC_V1_0_4",
    "lorawan_phy_version": "RP002_V1_0_3",
    "supports_join": true,
    "mac_settings": {
      "supports_32_bit_f_cnt": true
    },
    "formatters": {
      "up_formatter": "FORMATTER_REPOSITORY",
      "down_formatter": "FORMATTER_REPOSITORY"
    }
  },
  "field_mask": {
    "paths": [
      "version_ids",
      "supports_join",
      "supports_class_b",
      "supports_class_c",
      "lorawan_version",
      "lorawan_phy_version",
      "formatters",
      "mac_settings.supports_32_bit_f_cnt"
    ]
  }
}

URL

No response

Deployment

The Things Stack Open Source (self-hosted)

The Things Stack Version

3.36.0

Client Name and Version

TTN 3.36.0 running on Debian 13
web browser: Chrome 149 (Android)
Device repository: (forked) https://github.com/sept-s/lorawan-devices/tree/dev-sept-s

Other Information

I also have the problem when I add a device from other manufacturers (simulated qrcode).

Proposed Fix

Get the device profile in the device repository using the vendor profile ID in the QR code.

Contributing

• I can help by doing more research.
• I can help by implementing a fix after the proposal above is approved.
• I can help by testing the fix before it's released.

Validation

• The fix is tested in a staging environment.
• The fix is documented in The Things Stack Documentation

Code of Conduct

• I agree to follow TTN's Community Code of Conduct.