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?

RE: 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 — Thu, 03 Apr 2025 10:31:21 GMT

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?

RE: 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?

Vidar Berg — Thu, 03 Apr 2025 10:06:34 GMT

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

RE: 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 — Thu, 03 Apr 2025 09:33:43 GMT

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.

RE: 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?

Vidar Berg — Thu, 03 Apr 2025 08:09:09 GMT

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?

RE: 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 — Thu, 03 Apr 2025 06:44:09 GMT

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

RE: 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?

Vidar Berg — Thu, 03 Apr 2025 06:36:41 GMT

I included it here:

[quote userid="4240" url="~/f/nordic-q-a/120393/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/530349"]

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

ble_led_button.hex

[/quote]

RE: 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 — Thu, 03 Apr 2025 06:34:53 GMT

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

RE: 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?

Vidar Berg — Thu, 03 Apr 2025 06:11:01 GMT

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?

RE: 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 — Thu, 03 Apr 2025 05:41:36 GMT

It is showing error. Do I have to download anything?

RE: 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?

Vidar Berg — Thu, 03 Apr 2025 05:15:18 GMT

Thanks for posting the picture. Everything appears to be in order. Switches are in their default posititions, etc.

[quote userid="144496" url="~/f/nordic-q-a/120393/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/530345"]I tried giving both chips name. I just posted the picture of the one where I entered 5340's name[/quote]

I understand, but the relevant errors are those that shown when the correct device is entered.

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

devzone.nordicsemi.com/.../ble_5F00_led_5F00_button.hex

$ nrfutil device program --firmware ble_led_button.hex --options chip_erase_mode=ERASE_ALL,reset=RESET_SOFT,verify=VERIFY_READ

RE: 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 — Thu, 03 Apr 2025 04:56:03 GMT

Actually in the Jlink commander when the device name was asked. I tried giving both chips name. I just posted the picture of the one where I entered 5340's name. And for the picture. I will post it below. One time I tried to flash the LED blink program through nRF connect app. I kept pressing on the reset button and I saw something flashing in the chip, even though it showed error in the connect app. The LED1 on the peripheral actually started blinking that time. I again tried to flash another program, then the written program got erased and the new program wasn't flashed. A day later, I tried to connect the usb cable to the nRF52833 side. When I used to connect it like that, the LED1, 2, 3 and 4 used to turn on when the respective button was pressed. Now when I connect on that side, the LEDs are not turning on anymore. It happened after the program got flashed.

RE: 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?

Vidar Berg — Wed, 02 Apr 2025 14:14:50 GMT

Yes, the nRF5340 chip on this board is used as the interface mcu for the board. Could you please post a picture of your board and how it is connected to your pc? From your second screenshot it appears to be detected as a nRF5340DK, which I haven't seen happen before. Do you also see this if you open the 'Programmer' app?

RE: 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 — Wed, 02 Apr 2025 13:29:24 GMT

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...

RE: 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?

Vidar Berg — Wed, 02 Apr 2025 11:34:55 GMT

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.