LoRaWAN OTAA TTN 超时，网关捕获消息

Posted 2023-02-19

【中文标题】LoRaWAN OTAA TTN 超时，网关捕获消息

【英文标题】：LoRaWAN OTAA TTN Timedout with Gateway capturing the message

【发布时间】：2021-12-11 20:52:21

【问题描述】：

我尝试在 LoRaWAN 中设置一个终端节点。 我使用 ST Microelectronics 的板 b_l072z_lrwan1 和 Zephyr OS。 我在 VSCode 上使用 PlatformIO。

我使用 GitHub 上的代码https://github.com/fcgdam/zLorawan_Node。

这是我在网关上看到的（所有 EUI 都将更改）：

  "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"

对我来说，这意味着网关收到了一个好的请求。这是我在 ZephyrOS 上的配置。

#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  

我的请求因 errno -116 超时，即 ETIMEOUT

这是我在 TTN 中的设备配置：

你知道为什么我的请求超时了吗？

【参考方案1】：

我已经在 LSB 中编写了 DEV_EUI 但是，TTN 似乎在 MSB 中得到了它，当我颠倒字节顺序时它就起作用了。