I am using nRF52833 PCA10100. When I try to connect the device through J link commander it is always giving "cannot connect to the device." What should I do?

[Suryalakshmi]

I initially tried Segger Embedded Studio for ARM and I clicked on connect to J link device, an error occured. I wasn't sure at that time. Then I used the nRF CONNECT for desktop. The device was getting detecting, so I tried to flash a sample program for blinking the peripheral LED. Again it was showing error. Then I tried using JLINK commander, but it was also not able to connect to the device. I tried to see the problem by giving the output to chatgpt. It is saying that the SoC is locked and I should unsecure it. I tried it but I can't unsecure it. I don't know where I am wrong.  

[Vidar Berg]

Hello,

Are you testing with both a nRF5340 DK and a nRF52833 DK (pca101000), or only the latter? I see you are attempting to select the nRF5340 in Jlink commander, but this is the wrong chip if you are connected to a nRF52833 DK.

[Suryalakshmi]

It has both chips. nRF5340 is the part which have J link device. nRF52833 is for the peripherals. I am very new to nordic devices. So I only know little bit about the board. Even though unsecuring is not happening the option for it comes only when I select nRF5340. When I select nRF52833, it just directly says can't connect to the device. Also thank you for responding...

[Vidar Berg]

Error says it is not finding the hex file. Did you download the ble_led_button.hex file and is it located in the same directory?

[Suryalakshmi]

There is no ble_led_button file in my system. From where should I download it?

[Vidar Berg]

I included it here:

Vidar Berg said:

Please try to program the hex file below from the command line with nrfutil and see if that works.

ble_led_button.hex

[Suryalakshmi]

I don't understand... This happend when I ran the command.

[Vidar Berg]

The error indicates that the interface mcu is unable to communicate with the nRF52833 target. Maybe it is not powered. Do you have the power source switch in the "VDD" position?

[Suryalakshmi]

No, it's not in VDD... I kept it in USB. Also the nrfutil and the ble_led file both are in the same directory.

[Vidar Berg]

Default position is VDD and that is what you need to use with this configuration. 

[Suryalakshmi]

Thank you so much... I didn't knew it was supposed to be used in VDD. I always used USB.  This is the output...What should I do next?