This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

No response to AT

I got up to this stage while trying to evaluate the module...

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf91_dk_gsg%2FUG%2Fnrf91_DK_gsg%2Fintro.html

There is no response to AT+CFUN=4 (or even AT). I successfully updated the modem and application FW to the latest prior to this. I have tried switching the board on/off, etc. without success.

  • I believe I have the right application now:

    Parsing HEX file: D:\DriveOne1\OneDrive - LED Roadway Lighting Ltd\Designs\IntCellCntrl\Nordic\img_app_bl\nrf9160dk_asset_tracker_ltem_2021-06-25_7a076c22.hex

    Still no response to AT commands. Here is what I see in the Terminal window...

    *** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***
    
    
    
    
    [00:02:30.838,287] 
    
    
    [1;31m<err> at_cmd: Failed to open AT socket (err:-117)
    
    
    [0m
    
    
    
    
    [00:02:30.845,336] 
    
    
    [0m<inf> at_host: UART check failed: 1. Dropping buffer and retrying.
    
    
    [0m
    
    
    
    
    [00:02:30.863,647] 
    
    
    [0m<inf> asset_tracker: Asset tracker started
    
    
    [0m
    
    
    
    
    [00:02:30.869,750] 
    
    
    [0m<inf> watchdog: Watchdog timeout installed. Timeout: 60000
    
    
    [0m
    
    
    
    
    [00:02:30.877,258] 
    
    
    [0m<inf> watchdog: Watchdog started
    
    
    [0m
    
    
    
    
    [00:02:30.882,751] 
    
    
    [1;31m<err> at_cmd: Failed to send AT command (err:9)
    
    
    [0m
    
    
    
    
    [00:02:30.889,648] 
    
    
    [1;31m<err> nrf_cloud_transport: Failed to obtain IMEI, error: -9
    
    
    [0m
    
    
    
    
    [00:02:30.897,460] 
    
    
    [1;31m<err> asset_tracker: Cloud backend could not be initialized, error: -9
    
    
    [0m
    
    
    
    
    [00:02:30.906,372] 
    
    
    [1;31m<err> asset_tracker: LTE link disconnect
    
    
    [0m
    
    
    
    
    [00:02:30.912,689] 
    
    
    [1;31m<err> at_cmd: Failed to send AT command (err:9)
    
    
    [0m
    
    
    
    
    [00:02:30.919,525] 
    
    
    [1;31m<err> asset_tracker: lte_lc_power_off failed: -9
    
    
    [0m
    
    
    [00:02:30.926,422] 
    
    
    [1;31m<err> asset_tracker: Shutdown modem
    
    
    [0m
    
    
    
    
    *** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***
    
    
    
    
    I: Starting bootloader
    
    
    
    
    I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
    
    
    I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
    
    
    
    
    I: Boot source: none
    
    
    I: Swap type: none
    
    
    
    
    I: Bootloader chainload address offset: 0x10000
    
    
    
    
    I: Jumping to the first image slot
    
    
    *** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***
    
    
    Flash regions
    	
    	
    Domain
    	
    	
    Permissions
    
    
    
    
    00 03 0x00000 0x20000 
    	
    Secure
    	
    	
    rwxl
    
    
    
    
    04 31 0x20000 0x100000 
    	
    Non-Secure
    	
    rwxl
    
    
    
    
    
    
    
    
    Non-secure callable region 0 placed in flash region 2 with size 32.
    
    
    
    
    SRAM region
    	
    	
    Domain
    	
    	
    Permissions
    
    
    
    
    00 07 0x00000 0x10000 
    	
    Secure
    	
    	
    rwxl
    
    
    
    
    08 31 0x10000 0x40000 
    	
    Non-Secure
    	
    rwxl
    
    
    
    
    
    
    
    
    Peripheral
    	
    	
    Domain
    	
    	
    Status
    
    
    
    
    00 NRF_P0               Non-Secure
    	
    OK
    
    
    
    
    01 NRF_CLOCK            Non-Secure
    	
    OK
    
    
    
    
    02 NRF_RTC0             Non-Secure
    	
    OK
    
    
    03 NRF_RTC1             Non-Secure
    	
    OK
    
    
    
    
    04 NRF_NVMC             Non-Secure
    	
    OK
    
    
    05 NRF_UARTE1           Non-Secure
    	
    OK
    
    
    
    
    06 NRF_UARTE2           Secure
    	
    	
    SKIP
    
    
    
    
    07 NRF_TWIM2            Non-Secure
    	
    OK
    
    
    
    
    08 NRF_SPIM3            Non-Secure
    	
    OK
    
    
    
    
    09 NRF_TIMER0           Non-Secure
    	
    OK
    
    
    10 NRF_TIMER1           Non-Secure
    	
    OK
    
    
    
    
    11 NRF_TIMER2           Non-Secure
    	
    OK
    
    
    12 NRF_SAADC            Non-Secure
    	
    OK
    
    
    
    
    13 NRF_PWM0             Non-Secure
    	
    OK
    
    
    
    
    14 NRF_PWM1             Non-Secure
    	
    OK
    
    
    
    
    15 NRF_PWM2             Non-Secure
    	
    OK
    
    
    
    
    16 NRF_PWM3             Non-Secure
    	
    OK
    
    
    
    
    17 NRF_WDT              Non-Secure
    	
    OK
    
    
    
    
    18 NRF_IPC              Non-Secure
    	
    OK
    
    
    
    
    19 NRF_VMC              Non-Secure
    	
    OK
    
    
    
    
    20 NRF_FPU              Non-Secure
    	
    OK
    
    
    21 NRF_EGU1             Non-Secure
    	
    OK
    
    
    
    
    22 NRF_EGU2             Non-Secure
    	
    OK
    
    
    23 NRF_DPPIC            Non-Secure
    	
    OK
    
    
    
    
    24 NRF_REGULATORS       Non-Secure
    	
    OK
    
    
    25 NRF_PDM              Non-Secure
    	
    OK
    
    
    
    
    26 NRF_I2S              Non-Secure
    	
    OK
    
    
    
    
    27 NRF_GPIOTE1          Non-Secure
    	
    OK
    
    
    
    
    
    
    
    
    SPM: NS image at 0x20200
    
    
    
    
    SPM: NS MSP at 0x200257a8
    
    
    
    
    SPM: NS reset vector at 0x2a0cd
    
    
    
    
    SPM: prepare to jump to Non-Secure image.
    
    
    *** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***
    
    
    I: Starting bootloader
    
    
    
    
    I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
    
    
    
    
    I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
    
    
    
    
    I: Boot source: none
    
    
    
    
    I: Swap type: none
    
    
    
    
    I: Bootloader chainload address offset: 0x10000
    
    
    
    
    I: Jumping to the first image slot
    
    
    *** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***
    
    
    
    
    Flash regions
    	
    	
    Domain
    	
    	
    Permissions
    
    
    
    
    00 03 0x00000 0x20000 
    	
    Secure
    	
    	
    rwxl
    
    
    
    
    04 31 0x20000 0x100000 
    	
    Non-Secure
    	
    rwxl
    
    
    
    
    
    
    
    
    Non-secure callable region 0 placed in flash region 2 with size 32.
    
    
    SRAM region
    	
    	
    Domain
    	
    	
    Permissions
    
    
    
    
    00 07 0x00000 0x10000 
    	
    Secure
    	
    	
    rwxl
    
    
    
    
    08 31 0x10000 0x40000 
    	
    Non-Secure
    	
    rwxl
    
    
    
    
    Peripheral
    	
    	
    Domain
    	
    	
    Status
    
    
    00 NRF_P0               Non-Secure
    	
    OK
    
    
    
    
    01 NRF_CLOCK            Non-Secure
    	
    OK
    
    
    
    
    02 NRF_RTC0             Non-Secure
    	
    OK
    
    
    
    
    03 NRF_RTC1             Non-Secure
    	
    OK
    
    
    
    
    04 NRF_NVMC             Non-Secure
    	
    OK
    
    
    
    
    05 NRF_UARTE1           Non-Secure
    	
    OK
    
    
    
    
    06 NRF_UARTE2           Secure
    	
    	
    SKIP
    
    
    
    
    07 NRF_TWIM2            Non-Secure
    	
    OK
    
    
    08 NRF_SPIM3            Non-Secure
    	
    OK
    
    
    
    
    09 NRF_TIMER0           Non-Secure
    	
    OK
    
    
    
    
    10 NRF_TIMER1           Non-Secure
    	
    OK
    
    
    
    
    11 NRF_TIMER2           Non-Secure
    	
    OK
    
    
    
    
    12 NRF_SAADC            Non-Secure
    	
    OK
    
    
    13 NRF_PWM0             Non-Secure
    	
    OK
    
    
    
    
    14 NRF_PWM1             Non-Secure
    	
    OK
    
    
    15 NRF_PWM2             Non-Secure
    	
    OK
    
    
    
    
    16 NRF_PWM3             Non-Secure
    	
    OK
    
    
    
    
    17 NRF_WDT              Non-Secure
    	
    OK
    
    
    18 NRF_IPC              Non-Secure
    	
    OK
    
    
    
    
    19 NRF_VMC              Non-Secure
    	
    OK
    
    
    
    
    20 NRF_FPU              Non-Secure
    	
    OK
    
    
    
    
    21 NRF_EGU1             Non-Secure
    	
    OK
    
    
    22 NRF_EGU2             Non-Secure
    	
    OK
    
    
    
    
    23 NRF_DPPIC            Non-Secure
    	
    OK
    
    
    
    
    24 NRF_REGULATORS       Non-Secure
    	
    OK
    
    
    
    
    25 NRF_PDM              Non-Secure
    	
    OK
    
    
    
    
    26 NRF_I2S              Non-Secure
    	
    OK
    
    
    
    
    27 NRF_GPIOTE1          Non-Secure
    	
    OK
    
    
    SPM: NS image at 0x20200
    
    
    
    
    SPM: NS MSP at 0x200257a8
    
    
    
    
    SPM: NS reset vector at 0x2a0cd
    
    
    
    
    SPM: prepare to jump to Non-Secure image.
    
    
    
    
    AT+CFUN=4
  • It looks like it is not able to start the modem.

    How did you program the modem? What file did you use?

    Could you try to program the modem again?

  • I programmed the modem using the procedure in the Getting Started guide (mfw_nrf9160_1.3.0.zip). I note there is an extra _ character in this file versus what the guide says.

    In any case, I tried programming it again. It said it verified successfully, but still no response to AT commands.

  • Do you still get the same errors in the log?

    [1;31m<err> at_cmd: Failed to open AT socket (err:-117)

    [1;31m<err> at_cmd: Failed to send AT command (err:9)
Related