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no signal

a3p

Hi,

i'm not getting any signal with a fresh DK and the latest modem driver.

AT+CESQ
+CESQ: 99,99,255,255,255,255
OK

entering AT+COPS=?  will make it unresponsive forever. (nordic LTE Link monitor times out, and no AT commands are possible before hard reset).

does not matter which simcard i use. The one i'm testing right now from telekom works just fine in a simcom lte-m modem.

unfortunately the devzone has no way to attach files, so i uploaded the trace file here:

  • 0 in reply to a3p

    Hi a3p,

    It does look like you are using an older version than NCS v1.0.0?

    Please try to use this precompiled at_client: merged.hex

    You can flash it using the programmer app in nrf connect for desktop or by the command line: nrfjprog --program merged.hex -f nrf91 -r --sectorerase --verify

    Since you are mentioning "same antenna" are you using an external antenna on the nRF91 DK? Please keep this in mind

    Please send a new Log using LTE Link Monitor and just let the application run through the script by sending the AT command: AT+CFUN?

    Are you using the iBasis SIM card provided with the kit?

    Best regards,

    Martin L.

  • 0 in reply to Martin Lesund

    no, i tried v1.0.0 as well as master

    same issue with the hex you provided.

    same with external or internal antenna.

    same issue with the included iBasis Sim as well as a known working Telekom sim

    Fullscreen nrfconnect.log Download 
    AT+CFUN?

+CFUN: 1

OK

AT+CGSN=1

+CGSN: "352656100049496"

OK

AT+CGMI

Nordic Semiconductor ASA

OK

AT+CGMM

nRF9160-SICA

OK

AT+CGMR

mfw_nrf9160_1.0.0

OK

AT+CEMODE?

+CEMODE: 2

OK

AT%XCBAND=?

%XCBAND: (1,2,3,4,5,8,12,13,14,17,18,19,20,25,26,28,66)

OK

AT+CMEE?

+CMEE: 1

OK

AT+CNEC?

+CNEC: 24

OK

AT+CGEREP?

+CGEREP: 1,0

OK

AT+CIND=1,1,1

OK
AT+CEREG=2

OK
AT+CEREG?

+CEREG: 2,2,"FFFE","FFFFFFFF",7

OK

AT%CESQ=1

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK
AT%XSIM=1

OK

AT%XSIM?

%XSIM: 1

OK

AT+CPIN?

+CPIN: READY

OK

AT+CPINR="SIM PIN"

+CPINR: "SIM PIN",3

OK

AT+CIMI

204080813514708

OK

***** Booting Zephyr OS v1.14.99-ncs2 *****

The AT host sample started

AT

OK

AT+CFUN?

+CFUN: 4

OK

AT+CFUN=1

OK

AT+CFUN?

+CFUN: 1

OK

AT+CGSN=1

+CGSN: "352656100049496"

OK

AT+CGMI

Nordic Semiconductor ASA

OK

AT+CGMM

nRF9160-SICA

OK

AT+CGMR

mfw_nrf9160_1.0.0

OK

AT+CEMODE?

+CEMODE: 2

OK

AT%XCBAND=?

%XCBAND: (1,2,3,4,5,8,12,13,14,17,18,19,20,25,26,28,66)

OK

AT+CMEE?

+CMEE: 0

OK

AT+CMEE=1

OK

AT+CNEC?

+CNEC: 0

OK

AT+CNEC=24

OK
AT+CGEREP?

+CGEREP: 0,0

OK

AT+CGDCONT?

OK
AT+CGACT?

OK

AT+CGEREP=1

OK

AT+CIND=1,1,1

OK
AT+CEREG=2

OK

AT+CEREG?

+CEREG: 2,4,"FFFE","FFFFFFFF",7

OK

AT%CESQ=1

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT%XSIM=1

OK

AT%XSIM?

%XSIM: 1

OK

AT+CPIN?

+CPIN: READY

OK

AT+CPINR="SIM PIN"

+CPINR: "SIM PIN",3

OK

AT+CIMI

204080813514708

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK
AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

AT+CESQ

+CESQ: 99,99,255,255,255,255

OK

  • 0 in reply to a3p

    Hi a3p, 
    How long do you typically wait for a connection?

    The first time you do this, it can take up to 3-5 minutes. (and the response from CESQ will show 255 until you get a response from the eNB)

    e.g.

    ***** Booting Zephyr OS v1.14.99-ncs2 *****
The AT host sample started
AT+CFUN?
+CFUN: 4
OK
AT+CFUN=1
OK
AT+CFUN?
+CFUN: 1
OK
AT+CGSN=1
+CGSN: "352656100037632"
OK
AT+CGMI
Nordic Semiconductor ASA
OK
AT+CGMM
nRF9160-SICA
OK
AT+CGMR
mfw_nrf9160_1.0.0
OK
AT+CEMODE?
+CEMODE: 2
OK
AT%XCBAND=?
%XCBAND: (1,2,3,4,5,8,12,13,14,17,18,19,20,25,26,28,66)
OK
AT+CMEE?
+CMEE: 0
OK
AT+CMEE=1
OK
AT+CNEC?
+CNEC: 0
OK
AT+CNEC=24
OK
AT+CGEREP?
+CGEREP: 0,0
OK
AT+CGDCONT?
OK
AT+CGACT?
OK
AT+CGEREP=1
OK
AT+CIND=1,1,1
OK
AT+CEREG=2
OK
AT+CEREG?
+CEREG: 2,4,"FFFE","FFFFFFFF",7
OK
AT%CESQ=1
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT%XSIM=1
OK
AT%XSIM?
%XSIM: 1
OK
AT+CPIN?
+CPIN: READY
OK
AT+CPINR="SIM PIN"
+CPINR: "SIM PIN",3
OK
AT+CIMI
204080813512754
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
at+cesq
+CESQ: 99,99,255,255,255,255
OK
%CESQ: 51,2
+CEREG: 2,"76C1","0102DA04",7
%CESQ: 56,2
+CGEV: ME PDN ACT 0,0
AT+CGDCONT?
+CNEC_ESM: 50,0
+CEREG: 5,"76C1","0102DA04",7
+CIND: "service",1
+CIND: "roam",1
+CGDCONT: 0,"IP","ibasis.iot","10.160.28.172",0,0
OK
AT+CGACT?
+CGACT: 0,1
OK
at+cesq
+CESQ: 99,99,255,255,255,56
OK

    after a successful connection you can store the network data to modem flash by turning OFF the modem completely: AT+CFUN=0

    Then if you reboot the kit and turn on the modem you should see that you get a connection much quicker.

  • 0 in reply to Martin Lesund

    thanks, thats good to know. i did now test it by waiting 20 minutes with each sim card.

    same result

  • 0 in reply to a3p

    Hi A3p,

    In which country are you located?
    Did you register the ibasis SIM on nrf cloud?

    Could you try to set the command:

    AT%XMODEMTRACE=1,2

    before you turn on the modem.

    Please provide logs and any additional information you could think is important for me to know.

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