I often see the following warning when requesting a GNSS location: "<wrn> location: PSM is configured, but modem did not enter PSM in 2 minutes. Starting GNSS anyway." - what is this warning? Is this a setup issue or expected behavior?
I often see the following warning when requesting a GNSS location: "<wrn> location: PSM is configured, but modem did not enter PSM in 2 minutes. Starting GNSS anyway." - what is this warning? Is this a setup issue or expected behavior?
Hi,
Can you show your complete application log?
Best regards,
Dejan
NOTE 1: The location timeout is as expected since I am collecting this log while inside a building.
NOTE 2: see time [00:02:23.381,591]
[00:00:00.669,464] <inf> PWLS: Connecting to LTE network
[00:00:00.669,525] <inf> PWLS: Register GPS callback function
[00:00:00.669,525] <inf> PWLS: GpsInit()
%XMODEMSLEEP: 4
%XMODEMSLEEP: 4,0
+CEREG: 2,"6A25","08111911",7
[00:00:02.913,452] <inf> PWLS: NOT CONNECTED
+CSCON: 1
[00:00:06.818,023] <inf> PWLS: RRC mode: Connected
+CEREG: 5,"6A25","08111911",7,,,"00100011","11100000"
[00:00:08.607,330] <inf> PWLS: Network registration status: Connected - roaming
[00:00:08.607,421] <inf> PWLS: LTE CONNECTED...
[00:00:08.607,452] <inf> PWLS: COMMS - while(1)
+CEDRXP: 4,"1001","1001","0001"
[00:00:08.707,336] <inf> PWLS: LTE_LC_EVT_EDRX_UPDATE: 7
%XTIME: "0A","5280502123100A","01"
[00:00:08.807,800] <inf> PWLS: CommsDateTimeEvtHandler()
[00:00:08.807,830] <inf> PWLS: Local time: 1754397121000
[00:00:08.808,227] <inf> PWLS: LTE_LC_EVT_PSM_UPDATE: tau: 1800, active_time: 180
+CSCON: 0
[00:00:11.083,099] <inf> PWLS: RRC mode: Idle
%XMODEMSLEEP: 2,143312
[00:00:21.367,889] <inf> PWLS: IOButtonPressedISR(): ioPins: 0x00040000, Value: 0x0C080300, AND: 0x00000000
[00:00:21.367,919] <inf> PWLS: TimerStart(), 0x00040000
[00:00:21.367,950] <inf> PWLS: TEST_BUTTON
[00:00:23.367,980] <inf> PWLS: ISR: Test Button Timer Expired
[00:00:23.368,041] <inf> PWLS: EVENT: 18
[00:00:23.368,072] <inf> PWLS: GpsLocationGet()
[00:00:23.377,319] <inf> PWLS: Requesting GNSS location, 4 min timeout
[00:00:24.994,995] <inf> PWLS: IOButtonPressedISR(): ioPins: 0x00040000, Value: 0x0C0C0300, AND: 0x00040000
[00:00:24.995,025] <inf> PWLS: TimerStop(), 0x00040000
[00:00:24.995,025] <inf> PWLS: TEST_BUTTON
[00:02:23.381,591] <wrn> location: PSM is configured, but modem did not enter PSM in 2 minutes. Starting GNSS anyway.
%XMODEMSLEEP: 5,0
%XMODEMSLEEP: 2,0
[00:05:00.402,984] <inf> PWLS: uptime: 300
[00:05:23.377,563] <inf> location: Timeout for entire location request expired
[00:05:23.377,593] <wrn> location: GNSS timed out possibly due to too short GNSS time windows
[00:05:23.378,021] <inf> PWLS: location_event_handler()
[00:05:23.378,021] <inf> PWLS: Getting location timed out
%XMODEMSLEEP: 1,1487600
[00:05:23.497,467] <inf> PWLS: LTE params: err: 0, mcc: 310, mnc: 410, band: 12, snr: 28, rsrp: 48, rsrq: 20
[00:05:23.497,528] <inf> PWLS: Network Status: Connected - ROAMING
[00:05:23.497,528] <inf> PWLS: ServerResolve()
%XMODEMSLEEP: 1,0
+CSCON: 1
[00:05:23.882,720] <inf> PWLS: RRC mode: Connected
[00:05:24.714,050] <inf> PWLS: IPv4 Address found 20.82.16.164
[00:05:24.714,080] <inf> PWLS: ServerConnect()
[00:05:24.714,721] <inf> PWLS: ServerConnect() - Successfully connected to s_server
[00:05:24.714,752] <inf> PWLS: dateTime: 1754397436906
[00:05:24.714,782] <inf> PWLS: Length: 52
Message: [00:05:24.715,667] <inf> PWLS: CommsMsgSend(): msg: 00.01.00.01.0A.54.45.53.54.20.31.32.33.34.35.02.01.12.03.08.EA.6B.3C.7A.98.01.00.00.04.01.32.05.06.36.01.9A.01.30.00.06.01.28., len: 126
[00:05:24.716,247] <inf> PWLS: token: 0x0000C079
[00:05:24.716,278] <inf> PWLS: CoAP packet: 0x62 0x03 0x9C 0xBE 0x79 0xC0 0x01 0x20
[00:05:24.716,339] <inf> PWLS: Request: hrd: 6 max:200 off: 9 Olen: 2 delta: 12 data: by
[00:05:24.716,400] <inf> PWLS: View CoAP Packet
[00:05:24.716,400] <inf> PWLS: CoAP PUT request sent: Token 0xC079
[00:05:24.717,254] <inf> PWLS: Successfully sent message
[00:05:24.717,254] <inf> PWLS: CommsMsgReceive()
[00:05:25.175,201] <inf> PWLS: Data received from the s_server: len: 161, msg: (Time: 2025-08-05 12:37:18 Message: 00.01.00.01.0A.54.45.53.54.20.31.32.33.34.35.02.01.12.03.08.EA.6B.3C.7A.98.01.00.00.04.01.32.05.06.36.01.9A.01.30.00.06.01.28.)
[00:05:25.175,262] <inf> PWLS: COMMS - while(1)
+CSCON: 0
[00:05:28.614,868] <inf> PWLS: RRC mode: Idle
%XMODEMSLEEP: 2,153452
Hi,
The warning seems to be normal given the parameters, i.e. active time 180 seconds. When A-GNSS is not used, location library waits for the device to get to PSM before starting GNSS because getting a fix without A-GNSS and not being in PSM is unlikely. In your case, there might be some other activity that blocks PSM. Modem trace could potentially provide more information on what is blocking PSM.
Best regards,
Dejan
how do I enable modem trace?
Hi,
Have a look at these documentation links:
capturing modem trace
debugging with modem trace
modem tracing with UART snippets
modem trace module
modem trace activation
capturing modem trace
Best regards,
Dejan
