Issue with hello_dect sample using DECT NR+ FW v1.1.0

[sgordon291]

Nordic TS,

I've installed and begin to experiment with the DECT NR+ v1.1.1.0 FW.  Initially, I'm noticing on obvious difference in the behavior of the dect_hello sample between v1.0.2 of the FW and v1.1.0.  With v1.0.2, the "hello" messages are sent at 5 sec intervals, as configured in the RX_PERIOD_S var in the Kconfig file.  However, when the same dect_hello sample is run using v1.1.0 of the FW, it seems to almost not wait at all (less than 1 ms) between transmissions.  It seems to wait very little time to try to receive a packet before moving on the next transmission.

My output from v1.1.0 + hello_dect is the following:

To observe this issue, pls do the following:

1. Load v1.0.2 of FW

2. Load dect_hello

3. Execute and observe the interdeparture time of 5 sec.

4.   Load v1.1.0 of FW

5.. Load dect_hello

6. Execute and observe the interdeparture time of less than 1  ms.

Pls let me know if there is anything I can do that can fix this.

Thanks!

Best,

Steven Gordon

[Øyvind]

Hello Steven, 

I've been asked to follow up with the issue you are describing. 

I can see the same result on my side. I programmed the hello_dect sample from NCS v2.9.1 and see the same issue with dect modem fw.

mfw-nr+_nrf91x1_1.1.0-47.alpha

*** Booting nRF Connect SDK v2.9.1-60d0d6c8d42d ***
*** Using Zephyr OS v3.7.99-ca954a6216c9 ***
[00:00:00.292,907] <inf> app: Dect NR+ PHY Hello sample started
[00:00:00.479,370] <inf> app: Dect NR+ PHY initialized, device ID: 13309
[00:00:00.479,431] <inf> app: Transmitting 0
--- 1 messages dropped ---
[00:00:00.492,797] <inf> app: Transmitting 2
[00:00:00.499,328] <inf> app: Transmitting 3
[00:00:00.505,859] <inf> app: Transmitting 4
[00:00:00.512,390] <inf> app: Transmitting 5
[00:00:00.518,920] <inf> app: Transmitting 6
[00:00:00.525,451] <inf> app: Transmitting 7
[00:00:00.531,982] <inf> app: Transmitting 8
[00:00:00.538,360] <inf> app: Transmitting 9
[00:00:00.538,635] <inf> app: Transmitting 10
[00:00:00.538,909] <inf> app: Transmitting 11
[00:00:00.539,154] <inf> app: Transmitting 12
[00:00:00.539,428] <inf> app: Transmitting 13
[00:00:00.539,672] <inf> app: Transmitting 14
[00:00:00.539,947] <inf> app: Transmitting 15
[00:00:00.540,191] <inf> app: Transmitting 16
[00:00:00.540,466] <inf> app: Transmitting 17
[00:00:00.540,710] <inf> app: Transmitting 18
[00:00:00.540,985] <inf> app: Transmitting 19
[00:00:00.541,259] <inf> app: Transmitting 20
[00:00:00.541,503] <inf> app: Transmitting 21
[00:00:00.541,778] <inf> app: Transmitting 22
[00:00:00.542,022] <inf> app: Transmitting 23
[00:00:00.542,297] <inf> app: Transmitting 24
[00:00:00.542,541] <inf> app: Transmitting 25
[00:00:00.542,816] <inf> app: Transmitting 26
[00:00:00.543,670] <inf> app: Transmitting 27
[00:00:00.544,250] <inf> app: Transmitting 28
[00:00:00.544,830] <inf> app: Transmitting 29
[00:00:00.544,891] <inf> app: Reached maximum number of transmissions (30)
[00:00:00.544,921] <inf> app: Shutting down
[00:00:00.566,162] <inf> app: Bye!

mfw-nr+_nrf91x1_1.0.2

*** Booting nRF Connect SDK v2.9.1-60d0d6c8d42d ***
*** Using Zephyr OS v3.7.99-ca954a6216c9 ***
[00:00:00.303,375] <inf> app: Dect NR+ PHY Hello sample started
[00:00:00.667,541] <inf> app: Dect NR+ PHY initialized, device ID: 51521
[00:00:00.667,602] <inf> app: Transmitting 0
[00:00:05.673,980] <inf> app: Transmitting 1
[00:00:10.680,297] <inf> app: Transmitting 2
[00:00:15.686,614] <inf> app: Transmitting 3
[00:00:20.692,932] <inf> app: Transmitting 4
[00:00:25.699,249] <inf> app: Transmitting 5
[00:00:30.705,566] <inf> app: Transmitting 6
[00:00:35.711,883] <inf> app: Transmitting 7
[00:00:40.718,200] <inf> app: Transmitting 8
[00:00:45.724,517] <inf> app: Transmitting 9
[00:00:50.730,834] <inf> app: Transmitting 10
[00:00:55.737,152] <inf> app: Transmitting 11
[00:01:00.743,469] <inf> app: Transmitting 12
[00:01:05.749,786] <inf> app: Transmitting 13
[00:01:10.756,103] <inf> app: Transmitting 14
[00:01:15.762,420] <inf> app: Transmitting 15
[00:01:20.768,737] <inf> app: Transmitting 16
[00:01:25.775,054] <inf> app: Transmitting 17
[00:01:30.781,372] <inf> app: Transmitting 18
[00:01:35.787,689] <inf> app: Transmitting 19
[00:01:40.794,006] <inf> app: Transmitting 20
[00:01:45.800,323] <inf> app: Transmitting 21
[00:01:50.806,640] <inf> app: Transmitting 22
[00:01:55.812,957] <inf> app: Transmitting 23
[00:02:00.819,274] <inf> app: Transmitting 24
[00:02:05.825,592] <inf> app: Transmitting 25
[00:02:10.831,909] <inf> app: Transmitting 26
[00:02:15.838,226] <inf> app: Transmitting 27
[00:02:20.844,573] <inf> app: Transmitting 28
[00:02:25.850,860] <inf> app: Transmitting 29
[00:02:25.850,952] <inf> app: Reached maximum number of transmissions (30)
[00:02:25.850,982] <inf> app: Shutting down
[00:02:25.867,919] <inf> app: Bye!

I will forward to our DECT experts and get back to you.

Kind regards,
Øyvind

[sgordon291]

Thank you.

Best,

Steven Gordon