LHT65N-VIB vib_count and work_min are swapped in VIB_MOD=1

[albertgoodwin]

here is and event in my device log

8032980 2026/4/22 17:43:27 1 3020 tdc:yes alarm:false vib_count:118 work_min:2.

the corresponding uplink in Chirpstack (V4.16.2) is this:

{
"deduplicationId": "69e95000-b496-4695-a8d9-4e9c3fa3878d",
"time": "2026-04-22T17:43:25.472+00:00",
"deviceInfo": {
"tenantId": "582a3281-d4e9-4c6b-97b5-cc3ec33af618",
"tenantName": "ccny",
"applicationId": "3d182119-ede3-46d3-b115-22f994516bac",
"applicationName": "condition_monitoring",
"deviceProfileId": "c7421146-8b8b-4fdb-866e-c1ca42918c8b",
"deviceProfileName": "LHT65N-VIB",
"deviceName": "test sensor",
"devEui": "a8404183d15b04f7",
"deviceClassEnabled": "CLASS_A",
"tags": {}
},
"devAddr": "019dcf11",
"adr": true,
"dr": 3,
"fCnt": 322,
"fPort": 2,
"confirmed": false,
"data": "C8wGAAAAAgAAAHY=",
"object": {
"Alarm": "FALSE",
"TDC": "YES",
"BatV": 3.02,
"vib_count": 2,
"work_min": 118
},
"rxInfo": [
{
"gatewayId": "24e124fffefe22a6",
"uplinkId": 4355,
"gwTime": "2026-04-22T17:43:25.472607+00:00",
"nsTime": "2026-04-22T17:43:26.488286706+00:00",
"timeSinceGpsEpoch": "1460915023.472s",
"rssi": -95,
"snr": 7.8,
"channel": 7,
"rfChain": 1,
"location": {
"latitude": 41.5432,
"longitude": -74.1879,
"altitude": 163
},
"context": "CpMqoA==",
"crcStatus": "CRC_OK"
}
],
"txInfo": {
"frequency": 905300000,
"modulation": {
"lora": {
"bandwidth": 125000,
"spreadingFactor": 7,
"codeRate": "CR_4_5"
}
}
},
"regionConfigId": "us915_1"
}

it seams the device is sending the payload with the byte arrays swapped for those two values. The decoder is doing what the manual says it should.

for now i am swapping the names in the decoder.