Programming nRF52 SoCs with nRF5340 DK

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Wed, 11 May 2022 08:49:22 GMT

Happy to hear!

[quote user="Devuser101"] Does USB power interfere with the signal somehow?[/quote]

In the USB position, the USB high voltage regulator gets power from the nRF5340 USB connector (J3). This powers the nRF5340 SoC and not the Interface MCU directly, which runs SEGGER J-Link OB interface firmware and is used to program the nRF5340 or devices via P19.

As noted in the Debug Out chapter of nRF5340DK HW Description:

Note: The voltage supported by external debugging/programming is VDD voltage. Normally, this is 3 V when running from USB. But if the onboard nRF5340 SoC is supplied from either USB or lithium-ion (Li-ion) and the nRF power source switch (SW9) is in either Li-Po or USB position, then the VDD can be set by the nRF5340 firmware. Make sure the voltage level of the external board matches the VDD of the nRF5340 DK.

Hope this clears the confusion 🙂

Kind regards,
Øyvind

RE: Programming nRF52 SoCs with nRF5340 DK

Shaun Brentnall — Fri, 06 May 2022 12:28:53 GMT

Ahh that worked! Thank you very much, and I apologise for the silly question. Does USB power interfere with the signal somehow?

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Fri, 06 May 2022 10:54:46 GMT

Could you please disconnect the nRF USB and set nRF Power Source to VDD?

RE: Programming nRF52 SoCs with nRF5340 DK

Shaun Brentnall — Fri, 06 May 2022 09:13:10 GMT

Hi Øyvind,

here is the setup of the hardware I'm using

I've tried a second thingy:52 and a few different JTAG connectors. The same errors as before appear.

Could it be a problem that the Jlink versions are different?

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Fri, 06 May 2022 08:19:39 GMT

Can you please provide an image of your setup?

[quote user="Devuser101"]And when it's connect by Jtag, it just say Jtag with unknown in the field to the right. [/quote]

Can there be an issue with you JTAG cable?

RE: Programming nRF52 SoCs with nRF5340 DK

Shaun Brentnall — Wed, 04 May 2022 13:25:06 GMT

When the nRF5340DK isn't connected to the Thingy:52, it does show up as a DK.

And when it's connect by Jtag, it just say Jtag with unknown in the field to the right.

And for the two commands in cmd, they are here. Only the nRF52340 identity number shows up as a connected device. And I can programme DK via nrfjprog, but not the Thingy:52.

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Wed, 04 May 2022 12:56:06 GMT

Can you also issue nrfjprog -v ?

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Wed, 04 May 2022 12:55:15 GMT

In the programmer app, the nRF5340DK should show as a DK. I finally found my kit and tested:

What happens if you issue command nrfjprog --ids in cmd? Are you able to program the device using nrfjprog?

RE: Programming nRF52 SoCs with nRF5340 DK

Shaun Brentnall — Wed, 04 May 2022 12:01:02 GMT

Yeah, the Thingy:52 is on, I made sure to check that. Though it wouldn't have surprised me.

nRF5340 devkit version: 1.0.0
Thingy:52 version: 1.1.2

Could there be some compatibility issue?

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Wed, 04 May 2022 11:31:08 GMT

What version of the nRF5340DK and the Thingy:52 do you have? Both should be visible on the stickers.

The right hand side does show Unknown. Is the Thingy:52 powered on?

RE: Programming nRF52 SoCs with nRF5340 DK

Shaun Brentnall — Wed, 04 May 2022 11:16:02 GMT

Hi Øyvind, thank you for your reply.

Yes, it was a connection between P19 and and the 10 pin port on the thingy:52.

I was trying toolchain manager actually. But I tried with the Programmer app as you said, and it does detect that there is a device there but it still can't write to it. When I try to it returns a "JLINKARM_DLL_ERROR". I tried updating Segger JLink (from V7.58b to V7.64d), but I still get an error "Unsupported device. The device could not be recognised as neither JLink device nor Nordic USB device."

RE: Programming nRF52 SoCs with nRF5340 DK

Øyvind — Wed, 04 May 2022 06:52:15 GMT

Hello,

[quote user=""]Computer (Windows with nRF connect v3.11.0) <---> nRF5340 DK <---JTag---> Nordic Thingy:52[/quote]

This sounds correct. To what port have you connected the JTAG debug probe? You should be able to automatically program the Thingy:52 if connected to P19, see Debug Output in the nRF5340DK documentation. Make sure that the device is powered.

Are you using the Programmer app in nRF Connect for Dekstop 3.11.0 ? If so, choose the nRF5340DK and the device name from Thingy:52 should be visible in the left hand side. Here I've used the nRF9160DK to program the Thingy:52 with a zephyr.hex.

Kind regards,
Øyvind