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UniCT-ARSLab / LWN-Simulator

A LoRaWAN nodes' and network simulator that works with a real LoRaWAN environment (such as Chirpstack) and equipped with a web interface for real-time interaction.
MIT License
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Timestamp #20

Open guy426 opened 11 months ago

guy426 commented 11 months ago

Time of messages is always year 1980..

fedyfausto commented 11 months ago

Can you give more details about the environment? to reproduce the situation

guy426 commented 11 months ago

My network server is Chirpstack This is an example of decoded packet: {"tst":"2023-09-27T10:57:15.161510+0200","topic":"application/9e548d1d-37cb-43fc-8231-25bfe45508f3/device/685b00ff4c1f9511/event/up","qos":0,"retain":0,"payloadlen":1436,"payload":{"deduplicationId":"a7fed1c4-6243-44af-9310-f3f4e3e3eb00","time":"1980-01-21T23:17:20.234+00:00","deviceInfo":{"tenantId":"52f14cd4-c6f1-4fbd-8f87-4025e1d49242","tenantName":"ChirpStack","applicationId":"9e548d1d-37cb-43fc-8231-25bfe45508f3","applicationName":"counter","deviceProfileId":"408f84b7-f359-4995-8fb7-1a70f0f12f85","deviceProfileName":"device_profile","deviceName":"dev3","devEui":"685b00ff4c1f9511","deviceClassEnabled":"CLASS_A","tags":{}},"devAddr":"010da236","adr":true,"dr":0,"fCnt":183,"fPort":1,"confirmed":false,"data":"dGVzdDMgMjAgc2Vjb25kaQ==","object":{"cmd":"test3 20 secondi"},"rxInfo":[{"gatewayId":"285bd82c7d76e7e1","uplinkId":50925,"time":"2023-09-27T08:57:14+00:00","timeSinceGpsEpoch":"1379840.234s","rssi":-60,"snr":7,"channel":1,"location":{"latitude":43.735555660125584,"longitude":10.95216751098633,"source":"GPS"},"context":"ZRPuag==","metadata":{"region_config_id":"eu868","region_common_name":"EU868"},"crcStatus":"CRC_OK"},{"gatewayId":"4645c2a5de7dfb99","uplinkId":58674,"time":"2023-09-27T08:57:14+00:00","timeSinceGpsEpoch":"1379840.234s","rssi":-60,"snr":7,"channel":1,"location":{"latitude":43.724019581115016,"longitude":10.949935913085939,"source":"GPS"},"context":"ZRPuag==","metadata":{"region_config_id":"eu868","region_common_name":"EU868"},"crcStatus":"CRC_OK"}],"txInfo":{"frequency":868300000,"modulation":{"lora":{"bandwidth":125000,"spreadingFactor":12,"codeRate":"CR_4_5"}}}}}

fedyfausto commented 11 months ago

ok the problem could be the forwarder because the new protocol requires a valid GPS to bring the timestamp, I will investigate on this

itarozzi commented 11 months ago

I can confirm this issue. The field timeSinceGpsEpoch contains a bad value, not corresponding to the time field