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NRF52838 blinking L05 diode

Ceranthor

Hi,

I have problem. My NRF52832 Dev board is not recognizable by anything. L05 diode is blinking every 0.5 sec. I used Segger - not recognized, Keid again J Flash same story, nrf command line too, J link same. i do not know what to do next and i am asking for help. I uploaded blink program with keil and from this point board cannot be recognized. (Program works normallny when i have jumper on nrf current measure when i take it off program does not want to work. please help

Mateusz 

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  • +1

    Hi Mateusz

    Is the device not recognized even when you have the jumper on P22 (nRF current measurement header)? Please check whether Solder Bridge SB9 has been cut or not on your DK. If it is, then the jumper cable has to be connected to resume normal operation of the DK.

    Next, LED5 is connected to the Interface MCU on the DK, and not the nRF52832. If this blinks and the device is not recognizable by your computer when connected, you should follow the steps described in this thread to resume normal DK operations.

    Best regards,

    Simon

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  • +1

    Hi Mateusz

    Is the device not recognized even when you have the jumper on P22 (nRF current measurement header)? Please check whether Solder Bridge SB9 has been cut or not on your DK. If it is, then the jumper cable has to be connected to resume normal operation of the DK.

    Next, LED5 is connected to the Interface MCU on the DK, and not the nRF52832. If this blinks and the device is not recognizable by your computer when connected, you should follow the steps described in this thread to resume normal DK operations.

    Best regards,

    Simon

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