Cannot receive data send by raspberry pi +RFM95W on Node-RED

[damian nahmiyas]

hi people!
i need some help with this.
i have a multitech lora gateway and raspberry pi B+ with RFM95w lora node based on LMIC library(https://github.com/hallard/arduino-lmic/tree/rpi).
iam try to test otaa connection, but not see debug data in node-red.
the lora network server configured by public.

console out:
ttn-otaa Starting
RFM95 device configuration
CS=GPIO24 RST=GPIO22 LED=GPIO25 DIO0=Unused DIO1=Unused DIO2=Unused
DevEUI : ****************
AppEUI : ****************
AppKey : ********************************
14:25:58: Packet queued
14:26:03: EV_JOINED
14:26:06: EV_TXCOMPLETE (includes waiting for RX windows)
14:26:46: Packet queued
14:26:50: EV_TXCOMPLETE (includes waiting for RX windows)
14:27:30: Packet queued
14:27:33: EV_TXCOMPLETE (includes waiting for RX windows)
14:28:13: Packet queued
14:28:16: EV_TXCOMPLETE (includes waiting for RX windows)
14:28:56: Packet queued
14:28:59: EV_TXCOMPLETE (includes waiting for RX windows)
14:29:39: Packet queued
14:29:42: EV_TXCOMPLETE (includes waiting for RX windows)
14:30:22: Packet queued
14:30:26: EV_TXCOMPLETE (includes waiting for RX windows)
14:31:06: Packet queued
14:31:10: EV_TXCOMPLETE (includes waiting for RX windows)

[damian nahmiyas]

termial output with LMIC_DEBUG_LEVEL 2

RXMODE_RSSI
14:49:22: 618: engineUpdate, opmode=0x8
Packet queued
14:49:22: EV_JOINING
903: engineUpdate, opmode=0xc
999: TXMODE, freq=902300000, len=23, SF=7, BW=125, CR=4/5, IH=0
317436: RXMODE_SINGLE, freq=923300000, SF=7, BW=500, CR=4/5, IH=0
380681: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
383449: engineUpdate, opmode=0xc
429513: engineUpdate, opmode=0xc
429702: TXMODE, freq=903000000, len=23, SF=8, BW=500, CR=4/5, IH=0
744073: RXMODE_SINGLE, freq=923300000, SF=7, BW=500, CR=4/5, IH=0
807317: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
810048: engineUpdate, opmode=0xc
1041380: engineUpdate, opmode=0xc
1041544: TXMODE, freq=903900000, len=23, SF=8, BW=125, CR=4/5, IH=0
1361230: RXMODE_SINGLE, freq=923300000, SF=8, BW=500, CR=4/5, IH=0
1424450: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
1427174: engineUpdate, opmode=0xc
1427367: TXMODE, freq=903000000, len=23, SF=8, BW=500, CR=4/5, IH=0
1741728: RXMODE_SINGLE, freq=923300000, SF=7, BW=500, CR=4/5, IH=0
1804973: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
1807708: engineUpdate, opmode=0xc
2025365: engineUpdate, opmode=0xc
2025558: TXMODE, freq=903700000, len=23, SF=9, BW=125, CR=4/5, IH=0
2351053: RXMODE_SINGLE, freq=927500000, SF=9, BW=500, CR=4/5, IH=0
14:50:00: EV_JOINED
2353765: engineUpdate, opmode=0x808
2353888: TXMODE, freq=908900000, len=20, SF=9, BW=125, CR=4/5, IH=0
2428127: RXMODE_SINGLE, freq=923900000, SF=9, BW=500, CR=4/5, IH=0
2491300: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
14:50:04: EV_TXCOMPLETE (includes waiting for RX windows)
2611235: engineUpdate, opmode=0x800
14:52:04: 10111247: engineUpdate, opmode=0x808
10111356: TXMODE, freq=909100000, len=20, SF=9, BW=125, CR=4/5, IH=0
Packet queued
10185563: RXMODE_SINGLE, freq=924500000, SF=9, BW=500, CR=4/5, IH=0
10248735: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
14:52:07: EV_TXCOMPLETE (includes waiting for RX windows)
10316075: engineUpdate, opmode=0x800
14:54:07: 17816128: engineUpdate, opmode=0x808
17816254: TXMODE, freq=909300000, len=20, SF=9, BW=125, CR=4/5, IH=0
Packet queued
17890459: RXMODE_SINGLE, freq=925100000, SF=9, BW=500, CR=4/5, IH=0
17953631: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
14:54:10: EV_TXCOMPLETE (includes waiting for RX windows)
18014043: engineUpdate, opmode=0x800
14:56:10: 25514110: engineUpdate, opmode=0x808
25514219: TXMODE, freq=909500000, len=20, SF=9, BW=125, CR=4/5, IH=0
Packet queued
25588413: RXMODE_SINGLE, freq=925700000, SF=9, BW=500, CR=4/5, IH=0
25651589: RXMODE_SINGLE, freq=923300000, SF=12, BW=500, CR=4/5, IH=0
14:56:15: EV_TXCOMPLETE (includes waiting for RX windows)
25823235: engineUpdate, opmode=0x800

[Jason Reiss]

Is lmic code in 64 channel mode?
Conduit can only receive on 8.

[damian nahmiyas]

hi Jason!
where see this on LMIC?

[damian nahmiyas]

hi people!
post update:
i recived data sometime:
17:06:00: EV_JOINED
4387291: engineUpdate, opmode=0x808
4387398: TXMODE, freq=910900000, len=20, SF=10, BW=125, CR=4/5, IH=0
4473304: RXMODE_SINGLE, freq=925100000, SF=10, BW=500, CR=4/5, IH=0
4479087: Received downlink, window=RX1, port=1, ack=0
17:06:01: EV_TXCOMPLETE (includes waiting for RX windows)
17:06:01 Received 7 bytes of payload
4481205: engineUpdate, opmode=0x800

very rare. i need some help with this.
any with the same problem?

[Peter Ferland]

The Conduit is limited to listening on 8 channels at a time. There are 64 uplink channels in LoraWAN between 902.3MHz and 914.9 MHz for a total of 8 subbands. 910.9MHz is channel 43 in frequency sub band 5. If you set the Conduit to using frequency subband 1 it will be listening on the first 8 channels – 902.3MHz to 903.7MHz. Your device is listening for a response on receive channel 3 which is correct based on uplink channel 43, but if the Conduit was not configured for frequency subband 5 then it could not receive the transmission.

Try restricting your device to only using channels 0-7 (902.3-903.9MHz) and set the Conduit to frequency subband 1.

http://www.multitech.net/developer/software/lora/introduction-to-lora/
http://www.multitech.net/developer/software/lora/conduit-aep-lora-communication/aep-lora-use-third-party-devices/

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