NRF52840 DK log file

[Pan Yinliang]

ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.

we bought NRF52840 to test other boards, firstly a problem happened, when change a new NRF52840 the testing could pass, so we doubt the firmware inside it was lost, how could we solve this problem?

[sethu]

Hey, 

It could have been because you have accidentally erased the firmware for the JLink chip on your DK. It happens when u power cycle with the reset pin pressed. All you need to do is press the reset button and try turning on the DK again, the light on the DK will blink and the DK will be shown as a bootable device on ur PC, if that works out you just have to download the binary of the firmware (link) used by the interface chip and drag and drop it onto the bootable device, after that power cycle the DK (without pressing the reset button) and everything should be back to normal. Please do refer to this answer (link) by @Bjørn Kvaale for reference.

Cheers.

[Pan Yinliang]

Hi, thank you so much for your reply, yes we tried this way before, but error still exsits, kindly pls see below:

C:\Users\Administrator\Desktop\PBA 325 010 - 2.06>nrfjprog --family NRF52 --program Je325_Bootloader.ihex
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.

[Amanda Hsieh]

Hi Pan,

Pan Yinliang said:

we are using nRF52840 DK, the power supply is around 5V as we connected the board to PC through USB cable.

Please modify the power to 3.3v. 

Pan Yinliang said:

[2021-Mar-17 21:02:18] [debug] [Backend] - ---just_get_num_emus
[2021-Mar-17 21:02:18] [debug] [ nRF0x0] - connect_to_emu_with_snr
[2021-Mar-17 21:02:18] [debug] [nRFU

The log is not completed. Please upload the file named log.log under C:\Users\Administrator. Thanks. 

-Amanda H. 

[Pan Yinliang]

Hi Amamder,

Could you pls tell us how to upload the log file? Since it's just a text file, kindly pls check it in attachment.0511.log.log

Pan Yinliang

[Amanda Hsieh]

Hi Pan, 

Thanks for the log file. 

What is the board version on the white sticker?

-Amanda H.

[Pan Yinliang]

Hi Amanda,

Thanks for your kind reply.

Board version is PCA10056, kindly pls check the attached picture

Thanks and Best Regards

Pan Yinliang

[Amanda Hsieh]

Hi Pan, 

Sorry for the delay.

Please try nrfjprog --recover -f nRF52. If it still gets errors, please provide the log with nrfjprog --recover -f nRF52 --log.

-Amanda H.