Beccara
(Tristram Cheer)
April 11, 2024, 2:51am
1
Hi,
On my RAK3172 breakout I’m testing various DR modes vs power consumption. I am running into an issue trying to set DR_2/1/0.
After joining I issue a
Serial.printf(“Set the data rate %s”, api.lorawan.dr.set(DR_2) ? “Success” : “Fail”);
Serial.println();
Serial.printf(“Disable ADR %s”, api.lorawan.adr.set(false) ? “Success” : “Fail”);
Serial.println();
The trouble I run into is that I see these messages on uplinks:
UPLINK: Send packet with size 32
UPLINK: Send failed
and on our Chirpstack side of things I see an empty packet in DR_2 come up:
If I set DR_3 or higher things work:
Is this a bug and/or expected?
beegee
(Bernd Giesecke)
April 11, 2024, 3:06am
2
What LoRaWAN region are you using?
(1) Packet size is limited depending on the selected data rate
(2) DR0 and DR1 are disabled for some regions when Dwell-Time is active
Beccara
(Tristram Cheer)
April 11, 2024, 9:12pm
3
AS923 at the moment, AS915 sub 2 in the long run. I’m running these in NZ, I don’t think we have duty limits or dwell times here
Thanks!
beegee
(Bernd Giesecke)
April 12, 2024, 1:33am
4
AS923 has dwell time, unless you disable it on the LoRaWAN server. (from RP002-1.0.3 LoRaWAN® Regional Parameters)
The LoRaWAN server has to disable DwellTime with a MAC command sent to the device during/after join.
AS923 DR2 with Dwell-Time on allows only 19 bytes payload Maximum Transmission Load by Region
I am using AS923-3 and personal experience (not only with RUI3), dwell time is always enabled when I test with TTN or Chirpstack V4 LNS.
1 Like
system
(system)
Closed
April 22, 2024, 1:47am
6
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