Using nRF52840 DK to program a second nRF52840 SoC

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Fri, 21 Sep 2018 23:00:45 GMT

Hi, I just realized that there is no need to cut SB40. I was following the attached photo, but it seems that SDWCLK and SDWIO should be the other way around. I am wondering how you could program the holyiot.

RE: Using nRF52840 DK to program a second nRF52840 SoC

David Fogelsong — Fri, 21 Sep 2018 06:22:24 GMT

Glad you found your solution. In my case I didn't have to cut any trace lines, but I guess whatever works.

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Fri, 21 Sep 2018 00:42:01 GMT

Thanks @haakonsh. Cutting SB40 indeed worked and I am now able to program the holyiot. Next step is to program with a BLE DFU. David Fogelsong Any experience/suggestions?

RE: Using nRF52840 DK to program a second nRF52840 SoC

David Fogelsong — Thu, 20 Sep 2018 21:46:20 GMT

I just recently successfully programmed an nRF52840 module using the nRF52840-DK: with the two connected all I had to do was drag the .hex file to the JLINK "drive" as usual, and the external module got programmed. Maybe try that?

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Thu, 20 Sep 2018 20:59:14 GMT

The nRFGo Studio suggests to erase/recover or something like that. However, this does not work either.

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Thu, 20 Sep 2018 20:43:10 GMT

Hi, thank you for your time. I didn't cut SB40 as it is not mentioned here:

http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fdevelopment%2Fnrf52840_pdk%2Fhw_debug_out.html

I taught when detecting power on VTG, the onboard chip-set will no longer work and JLink is only used for the second device. I will try this too.

RE: Using nRF52840 DK to program a second nRF52840 SoC

David Fogelsong — Thu, 20 Sep 2018 18:13:20 GMT

That may be the problem that he's having. On some new modules you need to erase them first to remove the write protection. After that, you don't need to anymore.

RE: Using nRF52840 DK to program a second nRF52840 SoC

haakonsh — Thu, 20 Sep 2018 08:49:09 GMT

I've got my hands on the Holyiot module, I'll see if I can reproduce your issue.

Update:

I had no problem connecting to the holyiot module. Most likely you forgot to cut SB40 or use the wrong pin mapping.

I powered the module from a bench top power supply at 3V. On the DK I cut the power supply to the on-board nRF52840 by cutting SB40, connected VTG to DK-VDD and GND Detect to DK-GND. I then connected SWDIO and SWDCLK.

After connecting the DK to my computer and powering the holyiot module I ran 'nrfjprog -f nrf52 -e' and successfully erased the module.

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Wed, 12 Sep 2018 16:55:13 GMT

Yes, I have. As you can see above, I have connected these 4 pins + GND connect. I have also tried using a separate power source for Holyiot. Nothing changed.

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Wed, 12 Sep 2018 16:53:37 GMT

Thanks WhiteHare. I have connected these 4 pins + GND detect. It is not working.

RE: Using nRF52840 DK to program a second nRF52840 SoC

haakonsh — Wed, 12 Sep 2018 09:51:09 GMT

That is the j-link version that nrfjprog v9.7.3 is built for, therefor I think it is safe to assume it's not a driver issue.

Have you read WhiteHare's reply?

RE: Using nRF52840 DK to program a second nRF52840 SoC

haakonsh — Wed, 12 Sep 2018 09:47:07 GMT

You'll need to connect GND detect to GND as well.

RE: Using nRF52840 DK to program a second nRF52840 SoC

David Fogelsong — Tue, 11 Sep 2018 19:05:20 GMT

Seems like you should only need to make 4 connections: GND, voltage detect, SWDIO, and SWCLK. Well, at least that's certainly true for the nRF52832, and I assume (?) the nRF52840 as well. All this assumes you are powering the HolyIOT device with its own separate power source, which you should be. I have successfully programmed nRF52832 HolyIOT modules that way, and I presume the same holds true for the nRF52840?

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Tue, 11 Sep 2018 17:44:49 GMT

This returns:

nrfjprog version: 9.7.3
JLinkARM.dll version: 6.22g

RE: Using nRF52840 DK to program a second nRF52840 SoC

haakonsh — Tue, 11 Sep 2018 09:20:14 GMT

Follow up:

I need you to call nrfjprog --version in order to get the JLink dll version. We have experienced som issues with certain jlink driver version.

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Mon, 10 Sep 2018 19:19:55 GMT

Hi, I just tested with nrfjprog -f NRF52 -e --log --program file.hex --chiperase and received the following errors and the attached log file:

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.

devzone.nordicsemi.com/.../1817.log.log

RE: Using nRF52840 DK to program a second nRF52840 SoC

HSh — Fri, 07 Sep 2018 23:04:59 GMT

I didn't check with nrfjprog. Will let you know on Monday.

RE: Using nRF52840 DK to program a second nRF52840 SoC

haakonsh — Fri, 07 Sep 2018 09:15:20 GMT

What error message do you get when you call nrfjprog with '-f nrf52 -e'?