Hi,
I’ve been using the ic880a as a play area for some LoraWAN development.
The device i have is a SodaqONE and i’m using their SodaqOneTracker_v2 firmware.
The output from the SodaqOneTracker is this:
[hardwareReset]
[sleep]
>> sys sleep 259200000
Default fix event started.
Starting getGpsFixAndTransmit()...
Retrying ublox.getPortConfigurationDDC(&pcd)...
Timestamp, BatteryVoltage, BoardTemperature, Lat, Long, Altitude, Speed, Course, SatelliteCount, TimeToFix
1590526328, 132, 19, 513866359, -4081850, -9, 0, 0, 8, 1
Trying to join...
[wakeUp]
>> mac set deveui 0004A30B00EB5E28
[expectString] ("ok") .--> "ok" found a match!
>> mac set appeui 0000000000000000
[expectString] ("ok") .--> "ok" found a match!
>> mac set appkey B2F76E6D031459CF5ECB747EBE15575C
[expectString] ("ok") .--> "ok" found a match!
>> mac set adr on
[expectString] ("ok") .--> "ok" found a match!
[joinNetwork]
>> mac join otaa
[expectString] ("ok") .--> "ok" found a match!
[expectString] ("accepted") ..........................................--> "accepted" found a match!
[setPowerIndex]
>> mac set pwridx 1
[expectString] ("ok") .--> "ok" found a match!
[wakeUp]
[send]
[macTransmit]
>> mac tx cnf 1 7881CD5E841377FAA01E46B7C1FFF7FF0000000801
[expectString] ("ok") .--> "ok" found a match!
Waiting for server response.......................................................................................................................................................................................................................................................................................................Timed-out waiting for a response!
There was an error while transmitting through LoRaWAN: (2). Restarting module and scheduling a retransmission.
[hardwareReset]
[sleep]
>> sys sleep 259200000
If i go to my Live LoraWan Frames, then i see:
[
{
"downlinkMetaData": {
"txInfo": {
"gatewayID": "uCfr//7GP/k=",
"frequency": 867500000,
"power": 14,
"modulation": "LORA",
"loRaModulationInfo": {
"bandwidth": 125,
"spreadingFactor": 12,
"codeRate": "4/5",
"polarizationInversion": true
},
"board": 0,
"antenna": 0,
"timing": "DELAY",
"delayTimingInfo": {
"delay": "1s"
},
"context": "p2Or/A=="
}
},
"phyPayload": {
"mhdr": {
"mType": "UnconfirmedDataDown",
"major": "LoRaWANR1"
},
"macPayload": {
"fhdr": {
"devAddr": "019de7c0",
"fCtrl": {
"adr": true,
"adrAckReq": false,
"ack": true,
"fPending": false,
"classB": false
},
"fCnt": 0,
"fOpts": [
{
"bytes": "AwX/AAEG"
}
]
},
"fPort": null,
"frmPayload": null
},
"mic": "728362c4"
}
},
{
"uplinkMetaData": {
"rxInfo": [
{
"gatewayID": "uCfr//7GP/k=",
"time": null,
"timeSinceGPSEpoch": null,
"rssi": -48,
"loRaSNR": 7.2,
"channel": 5,
"rfChain": 0,
"board": 0,
"antenna": 0,
"location": {
"latitude": 51.38679,
"longitude": -0.4082,
"altitude": 1,
"source": "UNKNOWN",
"accuracy": 0
},
"fineTimestampType": "NONE",
"context": "p2Or/A==",
"uplinkID": "kLZHOaRATGy0G0Jlvs81Qg==",
"crcStatus": "CRC_OK"
}
],
"txInfo": {
"frequency": 867500000,
"modulation": "LORA",
"loRaModulationInfo": {
"bandwidth": 125,
"spreadingFactor": 12,
"codeRate": "4/5",
"polarizationInversion": false
}
}
},
"phyPayload": {
"mhdr": {
"mType": "ConfirmedDataUp",
"major": "LoRaWANR1"
},
"macPayload": {
"fhdr": {
"devAddr": "019de7c0",
"fCtrl": {
"adr": true,
"adrAckReq": false,
"ack": false,
"fPending": false,
"classB": false
},
"fCnt": 0,
"fOpts": null
},
"fPort": 1,
"frmPayload": [
{
"bytes": "BOQfSG9yFd+eZ7WnTO1u0wl/P7In"
}
]
},
"mic": "9afea8b1"
}
},
{
"downlinkMetaData": {
"txInfo": {
"gatewayID": "uCfr//7GP/k=",
"frequency": 868100000,
"power": 14,
"modulation": "LORA",
"loRaModulationInfo": {
"bandwidth": 125,
"spreadingFactor": 12,
"codeRate": "4/5",
"polarizationInversion": true
},
"board": 0,
"antenna": 0,
"timing": "DELAY",
"delayTimingInfo": {
"delay": "5s"
},
"context": "ptllfA=="
}
},
"phyPayload": {
"mhdr": {
"mType": "JoinAccept",
"major": "LoRaWANR1"
},
"macPayload": {
"bytes": "MLKHG0XE2PfgXK0eoH7Qb0BqxxdK0DdGtqaGLw=="
},
"mic": "99cf48cf"
}
},
{
"uplinkMetaData": {
"rxInfo": [
{
"gatewayID": "uCfr//7GP/k=",
"time": null,
"timeSinceGPSEpoch": null,
"rssi": -48,
"loRaSNR": 9,
"channel": 0,
"rfChain": 1,
"board": 0,
"antenna": 0,
"location": {
"latitude": 51.38679,
"longitude": -0.4082,
"altitude": 1,
"source": "UNKNOWN",
"accuracy": 0
},
"fineTimestampType": "NONE",
"context": "ptllfA==",
"uplinkID": "DEcfwgHsSCyZm/zLS9hxbw==",
"crcStatus": "CRC_OK"
}
],
"txInfo": {
"frequency": 868100000,
"modulation": "LORA",
"loRaModulationInfo": {
"bandwidth": 125,
"spreadingFactor": 12,
"codeRate": "4/5",
"polarizationInversion": false
}
}
},
"phyPayload": {
"mhdr": {
"mType": "JoinRequest",
"major": "LoRaWANR1"
},
"macPayload": {
"joinEUI": "0000000000000000",
"devEUI": "0004a30b00eb5e28",
"devNonce": 22791
},
"mic": "02ce1663"
}
}
]
Now, i must add that i’m probably having some issue with interference. I’ve moved the device about 1 meter to a different location (as in, other side of the laptop) and i get better results then before (above is the already better result). If i don’t do that, than i get quite a few CRC errors.
I wonder how i can troubleshoot this further. I really have the feeling that the software side is ok, but that there’s something wrong on the hardware side that makes it fail. Any idea is welcome 