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Programming external nrf5340 via nrf534 DK development kit and NRF Connect software.

Hello Sirs

I am using the NRF3540-DK development board to program an external NRF5340 chip. I have connected the RESET,SWDCLK,SWDIO,GND,3V pins of P20 connector on development

board to the external NRF5340.I have also derived the VTG pin on P20 connector by a 3V voltage to prevent the NRF5340 chip on the development board from any program changing.

By using the NRF Connect software I can program the external NRF5340 with no errors , but even a simple program like Blinky sample doesn't work on external NRF5340.

Incidentally the so called external NRF5340 is on the NORA-B101 module from Ublox. Would you please guide me in this regard . Thank you in advance for your invaluable support. 

  • Hi,

    By using the NRF Connect software I can program the external NRF5340 with no errors , but even a simple program like Blinky sample doesn't work on external NRF5340.

    Did you mean that you can program the 53 DK but not the external(NORA-B101) board?

    Debug out on the nRF5340 DK
    https://infocenter.nordicsemi.com/topic/ug_nrf5340_dk/UG/dk/hw_debug_out.html?cp=3_0_4_3_9


    Do you gett any error message ?


    Regards,
    Jonathan

  • Hi again

    As I mentioned before  the NRF chip on development board can be programed and has no problem. But the external NRF seems  

    not to be programed correctly by development kit, although it can be erased with no problem and also passes the programing process

    with no errors.

    The chip on development board works perfectly but the external NRF on NORA doesn't work.

    The above picture is The flash memory content of external NORA-B101 NRF chip after programing by NRF Connect and

    this is the flash memory content of NRF chip on development board. As it can be seen there is a difference in Application aria

    between two chips.

    Basically I want to know if its possible to program an external NRF chip VIA the development kit at all.

  • saeed mahvis said:
    Basically I want to know if its possible to program an external NRF chip VIA the development kit at all.

    It should not be an issue to use the development kit as a programmer to program external boards.

    The interfacing does seem to be successful since you hare able to read the memory layout of the NORA board, I find it strange that you are not successful in programming it.  


    What software are you flashing to the NORA device(custom code)?

    Regards,
    Jonathan

  • Hi

    Is there any other way to program NORA-B101 apart from development kit?

  • You could try to use the nrfjprog tool and try with terminal commands as an alterative to the programmer app. 

    You can use other programmer\debuggers to write to the nrf53 devices over SWD interface with a SEGGER J-link device.

    Regards,
    Jonathan

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