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no signal

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:

Parents
  • Hi a3p,

    Which network are you trying to connect to? LTE-M or NB-IoT?

    You can switch this by the AT command: xsystemmode

    Please share the full output from LTE link monitor.

    Best Regards,

    Martin L.

  • thats with CAT-M1 which i know works with the same sim, same antenna, different modem.

    i also tried NB-IOT with the same result.

    ***** Booting Zephyr OS v1.14.99-ncs1-rc1-4-g94b7d5affeea *****
    Flash region		Domain		Permissions
    00 0x00000 0x02000 	Secure		rwxl
    01 0x02000 0x04000 	Non-Secure	rwxl
    02 0x04000 0x06000 	Non-Secure	rwxl
    03 0x06000 0x08000 	Non-Secure	rwxl
    04 0x08000 0x0a000 	Non-Secure	rwxl
    05 0x0a000 0x0c000 	Non-Secure	rwxl
    06 0x0c000 0x0e000 	Non-Secure	rwxl
    07 0x0e000 0x10000 	Non-Secure	rwxl
    08 0x10000 0x12000 	Non-Secure	rwxl
    09 0x12000 0x14000 	Non-Secure	rwxl
    10 0x14000 0x16000 	Non-Secure	rwxl
    11 0x16000 0x18000 	Non-Secure	rwxl
    12 0x18000 0x1a000 	Non-Secure	rwxl
    13 0x1a000 0x1c000 	Non-Secure	rwxl
    14 0x1c000 0x1e000 	Non-Secure	rwxl
    15 0x1e000 0x20000 	Non-Secure	rwxl
    16 0x20000 0x22000 	Non-Secure	rwxl
    17 0x22000 0x24000 	Non-Secure	rwxl
    18 0x24000 0x26000 	Non-Secure	rwxl
    19 0x26000 0x28000 	Non-Secure	rwxl
    20 0x28000 0x2a000 	Non-Secure	rwxl
    21 0x2a000 0x2c000 	Non-Secure	rwxl
    22 0x2c000 0x2e000 	Non-Secure	rwxl
    23 0x2e000 0x30000 	Non-Secure	rwxl
    24 0x30000 0x32000 	Non-Secure	rwxl
    25 0x32000 0x34000 	Non-Secure	rwxl
    26 0x34000 0x36000 	Non-Secure	rwxl
    27 0x36000 0x38000 	Non-Secure	rwxl
    28 0x38000 0x3a000 	Non-Secure	rwxl
    29 0x3a000 0x3c000 	Non-Secure	rwxl
    30 0x3c000 0x3e000 	Non-Secure	rwxl
    31 0x3e000 0x40000 	Non-Secure	rwxl
    
    SRAM region		Domain		Permissions
    00 0x00000 0x01000	Secure		rwxl
    01 0x01000 0x02000	Secure		rwxl
    02 0x02000 0x03000	Secure		rwxl
    03 0x03000 0x04000	Secure		rwxl
    04 0x04000 0x05000	Secure		rwxl
    05 0x05000 0x06000	Secure		rwxl
    06 0x06000 0x07000	Secure		rwxl
    07 0x07000 0x08000	Secure		rwxl
    08 0x08000 0x09000	Non-Secure	rwxl
    09 0x09000 0x0a000	Non-Secure	rwxl
    10 0x0a000 0x0b000	Non-Secure	rwxl
    11 0x0b000 0x0c000	Non-Secure	rwxl
    12 0x0c000 0x0d000	Non-Secure	rwxl
    13 0x0d000 0x0e000	Non-Secure	rwxl
    14 0x0e000 0x0f000	Non-Secure	rwxl
    15 0x0f000 0x10000	Non-Secure	rwxl
    16 0x10000 0x11000	Non-Secure	rwxl
    17 0x11000 0x12000	Non-Secure	rwxl
    18 0x12000 0x13000	Non-Secure	rwxl
    19 0x13000 0x14000	Non-Secure	rwxl
    20 0x14000 0x15000	Non-Secure	rwxl
    21 0x15000 0x16000	Non-Secure	rwxl
    22 0x16000 0x17000	Non-Secure	rwxl
    23 0x17000 0x18000	Non-Secure	rwxl
    24 0x18000 0x19000	Non-Secure	rwxl
    25 0x19000 0x1a000	Non-Secure	rwxl
    26 0x1a000 0x1b000	Non-Secure	rwxl
    27 0x1b000 0x1c000	Non-Secure	rwxl
    28 0x1c000 0x1d000	Non-Secure	rwxl
    29 0x1d000 0x1e000	Non-Secure	rwxl
    30 0x1e000 0x1f000	Non-Secure	rwxl
    31 0x1f000 0x20000	Non-Secure	rwxl
    
    Peripheral		Domain		Status
    00 NRF_P0		Non-Secure	OK
    01 NRF_CLOCK		Non-Secure	OK
    02 NRF_RTC1		Non-Secure	OK
    03 NRF_NVMC		Non-Secure	OK
    04 NRF_UARTE1		Non-Secure	OK
    05 NRF_UARTE2		Secure		SKIP
    06 NRF_IPC		Non-Secure	OK
    07 NRF_VMC		Non-Secure	OK
    08 NRF_FPU		Non-Secure	ERROR
    09 NRF_EGU1		Non-Secure	OK
    10 NRF_EGU2		Non-Secure	OK
    11 NRF_TWIM2		Non-Secure	OK
    12 NRF_SPIM3		Non-Secure	OK
    13 NRF_TIMER0		Non-Secure	OK
    14 NRF_TIMER1		Non-Secure	OK
    15 NRF_TIMER2		Non-Secure	OK
    16 NRF_SAADC		Non-Secure	OK
    17 NRF_GPIOTE1		Non-Secure	OK
    
    SPM: MSP_NS 20023af0
    SPM: prepare to jump to Non-Secure image
    ***** Booting Zephyr OS v1.14.99-ncs1-rc1-4-g94b7d5affeea *****
    The AT host sample with modem Tracing enabled STARTED
    Modem Trace Enabled: OK
    
    
    AT+COPS?
    +COPS: 0
    OK
    AT+COPS=?
    ERROR
    AT+COPS?
    +COPS: 0
    OK
    AT+COPS=?
    ERROR
    AT+%xsystemmode
    ERROR
    AT+xsystemmode
    ERROR
    AT+xsystemmode=?
    ERROR
    AT+xsystemmode?
    ERROR
    AT+CFUN?
    +CFUN: 4
    OK
    AT+CFUN=1
    OK
    AT+CFUN=?
    +CFUN: (0,1,4,44)
    OK
    AT+CFUN
    ERROR
    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
    901405100339470
    OK
    AT%XSYSTEMMODE?
    %XSYSTEMMODE: 1,0,0,0
    OK
    %CESQ: 255,0
    +CEREG: 2,"FFFE","FFFFFFFF",7
    AT%XSYSTEMMODE=1,1,1,1
    +CME ERROR: 518
    AT%XSYSTEMMODE=1,1,1,0
    +CME ERROR: 518
    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
    901405100339470
    OK
    ***** Booting Zephyr OS v1.14.99-ncs1-rc1-4-g94b7d5affeea *****
    Flash region		Domain		Permissions
    00 0x00000 0x02000 	Secure		rwxl
    01 0x02000 0x04000 	Non-Secure	rwxl
    02 0x04000 0x06000 	Non-Secure	rwxl
    03 0x06000 0x08000 	Non-Secure	rwxl
    04 0x08000 0x0a000 	Non-Secure	rwxl
    05 0x0a000 0x0c000 	Non-Secure	rwxl
    06 0x0c000 0x0e000 	Non-Secure	rwxl
    07 0x0e000 0x10000 	Non-Secure	rwxl
    08 0x10000 0x12000 	Non-Secure	rwxl
    09 0x12000 0x14000 	Non-Secure	rwxl
    10 0x14000 0x16000 	Non-Secure	rwxl
    11 0x16000 0x18000 	Non-Secure	rwxl
    12 0x18000 0x1a000 	Non-Secure	rwxl
    13 0x1a000 0x1c000 	Non-Secure	rwxl
    14 0x1c000 0x1e000 	Non-Secure	rwxl
    15 0x1e000 0x20000 	Non-Secure	rwxl
    16 0x20000 0x22000 	Non-Secure	rwxl
    17 0x22000 0x24000 	Non-Secure	rwxl
    18 0x24000 0x26000 	Non-Secure	rwxl
    19 0x26000 0x28000 	Non-Secure	rwxl
    20 0x28000 0x2a000 	Non-Secure	rwxl
    21 0x2a000 0x2c000 	Non-Secure	rwxl
    22 0x2c000 0x2e000 	Non-Secure	rwxl
    23 0x2e000 0x30000 	Non-Secure	rwxl
    24 0x30000 0x32000 	Non-Secure	rwxl
    25 0x32000 0x34000 	Non-Secure	rwxl
    26 0x34000 0x36000 	Non-Secure	rwxl
    27 0x36000 0x38000 	Non-Secure	rwxl
    28 0x38000 0x3a000 	Non-Secure	rwxl
    29 0x3a000 0x3c000 	Non-Secure	rwxl
    30 0x3c000 0x3e000 	Non-Secure	rwxl
    31 0x3e000 0x40000 	Non-Secure	rwxl
    
    SRAM region		Domain		Permissions
    00 0x00000 0x01000	Secure		rwxl
    01 0x01000 0x02000	Secure		rwxl
    02 0x02000 0x03000	Secure		rwxl
    03 0x03000 0x04000	Secure		rwxl
    04 0x04000 0x05000	Secure		rwxl
    05 0x05000 0x06000	Secure		rwxl
    06 0x06000 0x07000	Secure		rwxl
    07 0x07000 0x08000	Secure		rwxl
    08 0x08000 0x09000	Non-Secure	rwxl
    09 0x09000 0x0a000	Non-Secure	rwxl
    10 0x0a000 0x0b000	Non-Secure	rwxl
    11 0x0b000 0x0c000	Non-Secure	rwxl
    12 0x0c000 0x0d000	Non-Secure	rwxl
    13 0x0d000 0x0e000	Non-Secure	rwxl
    14 0x0e000 0x0f000	Non-Secure	rwxl
    15 0x0f000 0x10000	Non-Secure	rwxl
    16 0x10000 0x11000	Non-Secure	rwxl
    17 0x11000 0x12000	Non-Secure	rwxl
    18 0x12000 0x13000	Non-Secure	rwxl
    19 0x13000 0x14000	Non-Secure	rwxl
    20 0x14000 0x15000	Non-Secure	rwxl
    21 0x15000 0x16000	Non-Secure	rwxl
    22 0x16000 0x17000	Non-Secure	rwxl
    23 0x17000 0x18000	Non-Secure	rwxl
    24 0x18000 0x19000	Non-Secure	rwxl
    25 0x19000 0x1a000	Non-Secure	rwxl
    26 0x1a000 0x1b000	Non-Secure	rwxl
    27 0x1b000 0x1c000	Non-Secure	rwxl
    28 0x1c000 0x1d000	Non-Secure	rwxl
    29 0x1d000 0x1e000	Non-Secure	rwxl
    30 0x1e000 0x1f000	Non-Secure	rwxl
    31 0x1f000 0x20000	Non-Secure	rwxl
    
    Peripheral		Domain		Status
    00 NRF_P0		Non-Secure	OK
    01 NRF_CLOCK		Non-Secure	OK
    02 NRF_RTC1		Non-Secure	OK
    03 NRF_NVMC		Non-Secure	OK
    04 NRF_UARTE1		Non-Secure	OK
    05 NRF_UARTE2		Secure		SKIP
    06 NRF_IPC		Non-Secure	OK
    07 NRF_VMC		Non-Secure	OK
    08 NRF_FPU		Non-Secure	ERROR
    09 NRF_EGU1		Non-Secure	OK
    10 NRF_EGU2		Non-Secure	OK
    11 NRF_TWIM2		Non-Secure	OK
    12 NRF_SPIM3		Non-Secure	OK
    13 NRF_TIMER0		Non-Secure	OK
    14 NRF_TIMER1		Non-Secure	OK
    15 NRF_TIMER2		Non-Secure	OK
    16 NRF_SAADC		Non-Secure	OK
    17 NRF_GPIOTE1		Non-Secure	OK
    
    SPM: MSP_NS 20023af0
    SPM: prepare to jump to Non-Secure image
    ***** Booting Zephyr OS v1.14.99-ncs1-rc1-4-g94b7d5affeea *****
    The AT host sample with modem Tracing enabled STARTED
    Modem Trace Enabled: OK
    
    
    AT%XSYSTEMMODE=1,1,1,2
    ERROR
    AT%XSYSTEMMODE=1,1,0,2
    ERROR
    AT%XSYSTEMMODE=0,1,0,0
    OK
    AT+CFUN
    ERROR
    AT+CFUN?
    +CFUN: 4
    OK
    AT+CFUN=1
    OK
    AT+CFUN
    ERROR
    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: 0
    OK
    AT%XCBAND=?
    %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
    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",9
    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
    901405100339470
    OK
    

    attached is the complete nrf connect session

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

    same result

  • 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.

  • yes, the basis sim is now registered. no change. is the usage of the nrf cloud mandatory?

    this is germany/Berlin with good coverage of both LTE and NB-IoT. My telekom sim works fine with a simcom modem, which also gives considerably more debug out if something is wrong.

    with the hex file you send me, no traces are collected using the trace collector from  nrfconnect, even when setting 

    AT%XMODEMTRACE=1,2

    I already attached a trace file earlier. do you need a different one?

    when running for a long time, i ocassionally get "

    %CESQ: 255,0
    +CEREG: 2,"FFFE","FFFFFFFF",7


    currently i'm assuming that the DK is simply broken, and i ordered a second one.
    
    
    
    
    
    
  • Hi a3p,

    I forgot that some networks do not support ePCO, which is most likely the case here.

    Please try to the AT command:

    AT%XEPCO=0

    then switch to nb-iot mode,

    AT%XSYSTEMMODE=0,1,0,0

    before you turn on the modem (at+cfun=1).

  • thanks Martin!

    the output is different now for NB-IoT

    +CESQ: 99,99,255,255,255,36
    
    
    
    
    O

    is there a similar thing that would make LTE-M work?

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