nrf52840 Board Detection problem after click the recover button in nRFGO studio

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

Andreas — Fri, 04 Jan 2019 08:36:37 GMT

Hi Divya,

Happy to hear it, thanks for letting us know.

Best regards,

Andreas

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Fri, 04 Jan 2019 08:24:50 GMT

Hi Andreas

I solved the problems by downloading newest version of segger J-LInk and uninstall the previous versions

Now it was working fine.

Thank you for your support and feedback

Regards

Divya

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Thu, 03 Jan 2019 14:54:17 GMT

Hi,

It seems to be attached files not clear. so i upload it here.

Regards

Divya

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Thu, 03 Jan 2019 14:47:22 GMT

Hi Andreas,

I programmed the led blinking example on NRF52840 DEVELOPMENT KIT using nRFgo studio with program application. it works and led1,2,3,4 are blinked.

But i tried the same example in IAR, but the segger Jlink doesnot recognize the NRF52840 DEVICE.

if i try to find the device it doesnot have nrf52840 and all other versions on nrf are available.

If i tried with nrf52832 it was worked and all led are blinked like in nrf52840.

How can i add nrf52840 into the segger jlink device list?

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

Andreas — Fri, 14 Dec 2018 15:57:44 GMT

Hi,

On nrF52840 DK you should just change SW6 to VDD, then it will be in 3V 'normal voltage' operation and allow you to program it. J-Link Plus should support 1.8V, so I rather suspect your chip is not powered.

Best regards,

Andreas

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

Andreas — Fri, 14 Dec 2018 15:53:57 GMT

Hi,

See here. (the site says outdated, but it is still valid)

Best regards,

Andreas

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Wed, 12 Dec 2018 15:58:30 GMT

Hi Andreas

I connected to the wrong Debug out port.

Could you please send me the schematic of nrf52840 development kit? I need the pinout of the p18 debug input port.

Regards

Divya

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Wed, 12 Dec 2018 14:55:05 GMT

Hi Andreas

The Dongle i mentioned above is the Nrf52840 development board (pca10056). It appears like nrf52 development dongles in the nRFgo studio.

Does it automatically program the firmware and changes the Regout to 3volt if I loaded the .hex file using command line tools?

I tried to program the blinky hex file using J-link PLUS debugger port connected to the debug out (p20) of NRF52840 DK using cmd window. But it shows error of low voltage.

C:\NRF52840\nRF5_SDK_13.0.0-1.alpha_055eef3\examples\peripheral\blinky>nrfjprog --program blinky_pca10056.hex
ERROR: Low voltage detected at the target. Please make sure the device is
ERROR: properly supplied.

Regards

Divya

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

Andreas — Wed, 12 Dec 2018 13:29:47 GMT

Hi,

OK so the dongle you mentioned is a dongle that you have made yourself? Can you describe how have you powered the board or show the relevant portions of your board schematic?

In any case, once you installed nRF Command Line Tools, the commands are to be run from a command line window. Navigate to the folder with the respective .hex file you want to program, and write cmd in the navigation bar (and hit enter). Opening the cmd window from the navigation bar automatically gets you the correct path to the folder of the hex file you want to program. You should see a similar window open:

Then write nrfjprog --program <name of your hex file>, e.g. nrfjprog --program myapplication.hex and hit enter.

Best regards,

Andreas

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Wed, 12 Dec 2018 13:07:26 GMT

Hi Andreas,

I dont have the nrf52840 dongle and open USB Bootloader for programming. I only have the nrf52840 development kit. so i try to use segger J-link debug cable to connect to the debug out of nrf52840. I installed NRF5 command line tools.The file folder has nrfjprog.exe. But it crashes when i open the nrfprog.exe. Could you please explain little bit briefly how to program the firmware using segger j-link Debug probe inorder to retrieve the original behaviour.

Regards

Divya

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

Andreas — Wed, 12 Dec 2018 09:21:42 GMT

Hi,

Program the Open USB Bootloader mentioned in the guide, this restores the ability to program over USB. You do not need to change anything with regards to REGOUT0 if you use the PCA10059 hex as that should already set REGOUT0 to 3.0V.

For programming I recommend looking into nrfjprog, our command line tool.

Best regards,

Andreas

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

DIVYA — Tue, 11 Dec 2018 14:31:09 GMT

Hi Andreas

Thanks for your quick response.

I read the tutorial how to Recover after an accidental UICR erase.

I think i choose the 1st method by connecting the debug probe and program the firmware by changing REGOUT0 TO 1.8V.

Could you please help me how to program the firmware. In which file i need to change?

RE: nrf52840 Board Detection problem after click the recover button in nRFGO studio

Andreas — Tue, 11 Dec 2018 13:22:29 GMT

Hi,

When you erase the UICR (as when recovering) you also erase the voltage setting of the REG0 output voltage to 1.8V, which is used as GPIO and SWD high voltage. This is outside the PCA10056 Segger OB range.

See this tutorial for instructions on how to retrieve the original behaviour: devzone.nordicsemi.com/.../nrf52840-dongle-programming-tutorial

Best regards,

Andreas