The "Margin" field of the "DevStatusAns" command payload is wrongly encoded #130
Description
Tested with Arudino Mega 2560 connected to RFM95 module.
Add the following two lines to project_config/lmic_project_config.h:
#define LMIC_DEBUG_LEVEL 2 #define LMIC_PRINTF_TO Serial After running a slightly modified version of the ttn-otaa sketch, this is the output on the Serial.
Serial connection enstablished. RXMODE_RSSI 62657: engineUpdate, opmode=0x808 Packet queued 62708: EV_JOINING 62778: engineUpdate, opmode=0xc 273627: engineUpdate, opmode=0xc 273909: EV_TXSTART 273934: engineUpdate, opmode=0x88c 273992: TXMODE, freq=868100000, len=23, SF=7, BW=125, CR=4/5, IH=0 582073: setupRx1 txrxFlags 00 --> 01 start single rx: now-rxtime: 6 582161: RXMODE_SINGLE, freq=868100000, SF=7, BW=125, CR=4/5, IH=0 593337: EV_JOINED netid: 0 devaddr: XXXXXXXX artKey: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX nwkKey: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 593699: engineUpdate, opmode=0x808 594248: EV_TXSTART 594274: engineUpdate, opmode=0x888 594393: TXMODE, freq=868100000, len=19, SF=7, BW=125, CR=4/5, IH=0 653595: setupRx1 txrxFlags 0x1 --> 01 start single rx: now-rxtime: 4294967238 653657: RXMODE_SINGLE, freq=868100000, SF=7, BW=125, CR=4/5, IH=0 662938: process options (olen=0x6) 662975: LinkAdrReq: p1:52 chmap:0007 chpage:00 uprt:01 ans:87 663116: decodeFrame txrxFlags 0x1 --> 21 663333: Received downlink, window=RX1, port=-1, ack=0, txrxFlags=0x21 663705: EV_TXCOMPLETE (includes waiting for RX windows) 664010: engineUpdate, opmode=0x800 1289010: engineUpdate, opmode=0x808 1289466: EV_TXSTART 1289495: engineUpdate, opmode=0x888 1289554: TXMODE, freq=868300000, len=24, SF=7, BW=125, CR=4/5, IH=0 Packet queued 1349396: setupRx1 txrxFlags 0x21 --> 01 start single rx: now-rxtime: 4294967238 1349463: RXMODE_SINGLE, freq=868300000, SF=7, BW=125, CR=4/5, IH=0 Basically we can see that the Node is able to join the Lora network (593337: EV_JOINED), but fails to send the first uplink packet and keeps retrying.
Logging on the AWG ubuntu machine and checking the logs with journalctl -f -u loraserver I noticed the following lines appearing right after the node sends the "Packet queued" message:
Sep 24 20:20:15 ip-172-31-45-153 loraserver[18826]: time="2018-09-24T20:20:15Z" level=error msg="processing uplink frame error" data_base64=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX error="create uplink frame-log error: marshal phypayload error: lorawan: max value of Margin is 31"