LoRaWAN OTAA TTN Timedout with Gateway capturing the message - lora

Question

I try to set up an end node in LoRaWAN.
I use the board b_l072z_lrwan1 from ST Microelectronics with Zephyr OS.
I use PlatformIO on VSCode.
I use the code available on GitHub at https://github.com/fcgdam/zLorawan_Node.
Here is what I see on my gateway (all EUIs will be changed) :
{
"name": "gs.up.receive",
"time": "2021-10-26T12:54:26.556184636Z",
"identifiers": [
{
"gateway_ids": {
"gateway_id": "bzm-testing-gateway"
}
},
{
"gateway_ids": {
"gateway_id": "bzm-testing-gateway",
"eui": "B827EBFFFE6F34C2"
}
}
],
"data": {
"#type": "type.googleapis.com/ttn.lorawan.v3.UplinkMessage",
"raw_payload": "ACIiIiIRERERcLPVftAEdD2GalaJt3Y=",
"payload": {
"m_hdr": {},
"mic": "Vom3dg==",
"join_request_payload": {
"join_eui": "1111111122222222",
"dev_eui": "3D7404D07ED5B370",
"dev_nonce": "6A86"
}
},
"settings": {
"data_rate": {
"lora": {
"bandwidth": 125000,
"spreading_factor": 12
}
},
"coding_rate": "4/5",
"frequency": "868500000",
"timestamp": 1014604052,
"time": "2021-10-26T12:54:26.535592Z"
},
"rx_metadata": [
{
"gateway_ids": {
"gateway_id": "bzm-testing-gateway",
"eui": "B827EBFFFE6F34C2"
},
"time": "2021-10-26T12:54:26.535592Z",
"timestamp": 1014604052,
"rssi": -45,
"channel_rssi": -45,
"snr": 9.8,
"uplink_token": "CiEKHwoTYnptLXRlc3RpbmctZ2F0ZXdheRIIuCfr//5vNMIQlMLm4wMaDAiC9d+LBhCnrZWIAiCg7PTYwx0=",
"channel_index": 2
}
],
"received_at": "2021-10-26T12:54:26.553997991Z",
"correlation_ids": [
"gs:conn:01FJY9PGVXJ4SE6B1SF1KDCYR4",
"gs:uplink:01FJYAN3FVJJSC368C2PHTXN93"
]
},
"correlation_ids": [
"gs:conn:01FJY9PGVXJ4SE6B1SF1KDCYR4",
"gs:uplink:01FJYAN3FVJJSC368C2PHTXN93"
],
"origin": "ip-10-100-5-46.eu-west-1.compute.internal",
"context": {
"tenant-id": "CgN0dG4="
},
"visibility": {
"rights": [
"RIGHT_GATEWAY_TRAFFIC_READ",
"RIGHT_GATEWAY_TRAFFIC_READ"
]
},
"unique_id": "01FJYAN3FWYZ8BTA8HKB2VYB2V"
}
For me this means the the gateway receive a good request. Here is my configuration on ZephyrOS.
#define LORAWAN_DEV_EUI { 0x3D, 0x74, 0x04, 0xD0, 0x7E, 0xD5, 0xB3, 0x70 } // LSB Format!
#define LORAWAN_JOIN_EUI { 0x11, 0x11, 0x11, 0x11, 0x22, 0x22, 0x22, 0x22 }
#define LORAWAN_APP_KEY { 0x33, 0xE6, 0xF7, 0xF7, 0x5B, 0x46, 0xD2, 0xDC, 0x7F, 0xC4, 0x7C, 0x5F, 0x94, 0x56, 0x06, 0x43 }
My request times out with errno -116 which is ETIMEOUT
Here is my configuration of the device in TTN:
Do you have any clue of why my request timedout?

Answer 1

I've written the DEV_EUI in LSB However, TTN seems to get it in MSB, it worked when I inverted the order of the bytes.