JLink Voltage value for flasdhing change

RE: JLink Voltage value for flasdhing change

simon1516 — Tue, 19 May 2020 08:17:11 GMT

[quote userid="13562" url="~/f/nordic-q-a/61257/jlink-voltage-value-for-flasdhing-change/250600"]You still need to connect the DK to the regular USB. [/quote]

That´s it. Now it works. I can flash with 1,8V. Thank you for your support!

RE: JLink Voltage value for flasdhing change

haakonsh — Tue, 19 May 2020 08:07:11 GMT

You still need to connect the DK to the regular USB. You might have to cut SB40 (nRF Current Measurement pins).

RE: JLink Voltage value for flasdhing change

simon1516 — Tue, 19 May 2020 08:02:21 GMT

[quote userid="13562" url="~/f/nordic-q-a/61257/jlink-voltage-value-for-flasdhing-change/250594"]What are the voltages on VDD of the target board?[/quote]

1,8V, provided by P19 debug out interface.

If I try to flash the target board, I get an error as shown in screenshot attached.

RE: JLink Voltage value for flasdhing change

haakonsh — Tue, 19 May 2020 07:52:45 GMT

What are the voltages on VDD of the target board?

RE: JLink Voltage value for flasdhing change

simon1516 — Mon, 18 May 2020 20:22:04 GMT

I would like to sum up:

- soldered SB 47 for powering external boards with debug out P19

- execute "nrfjprog -f nrf52 -e" for setting VDD voltage level of dk board to 1,8V

- SW9 flipped to USB

- powered by nRF USB

With these configurations, I´m not able to flash onboard/external nRF52833 SoC. Is there someting else I could try? Thanks a lot for help!

regards

Simon

RE: JLink Voltage value for flasdhing change

simon1516 — Mon, 18 May 2020 14:34:40 GMT

Yes

RE: JLink Voltage value for flasdhing change

haakonsh — Mon, 18 May 2020 11:43:13 GMT

Have you flipped the power switch to USB?

RE: JLink Voltage value for flasdhing change

simon1516 — Sun, 17 May 2020 14:47:10 GMT

[quote userid="13562" url="~/f/nordic-q-a/61257/jlink-voltage-value-for-flasdhing-change/250106"]If you've erased the nRF52833 on the DK, power the DK from the Li-po or nRF USB inputs, and powered the external board at 1.8V, you should be able to interface the debugger with the external board.[/quote]

ahh, now I have voltage level at 1,8V on nrf52833 DK. I not realized that I had to use the nRF USB Input. I used always the standard USB connection. But now, when I use nRF USB, I can´t connect/programming by J-Link. Can you tell me what to do making this work?

Thanks in advance.

RE: JLink Voltage value for flasdhing change

haakonsh — Fri, 15 May 2020 08:25:16 GMT

[quote user="simon1516"]I power the target boards by nRF52833 DK board. [/quote]

You need to power the target board with 1.8V.

[quote user="simon1516"]I can´t connect a 3V programmer (=nRF52833 DK board) to this target.[/quote][quote user="simon1516"]Yes, I use nRF52833 DK, this also support 1.8V targets:[/quote]

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf52833_dk%2FUG%2Fnrf52833_DK%2Fhw_debug_out.html
"The voltage supported by external debugging/programming is VDD voltage. Normally, this is 3 V when running from USB, but if the onboard nRF52833 SoC is supplied from either USB or Li-Ion, the nRF power source switch (SW9) is in either Li-Po or USB position, and VDD can be set by the nRF52833 firmware. Make sure the voltage level of the external board matches the VDD of the nRF52833 DK."

If you've erased the nRF52833 on the DK, power the DK from the Li-po or nRF USB inputs, and powered the external board at 1.8V, you should be able to interface the debugger with the external board.

RE: JLink Voltage value for flasdhing change

simon1516 — Thu, 14 May 2020 16:45:37 GMT

hmm, I don´t know if you´re understanding my issue.

The target board has a few components, working with 1,8V connected to VDD. So in my understanding, I can´t connect a 3V programmer (=nRF52833 DK board) to this target. I need a programming voltage by 1,8V, that nothing happens to the components of the target board. I power the target boards by nRF52833 DK board. The voltage from debug out interface is connected to VDD of the target. So before first connection, I have to make sure, that the programming voltage (VDD of DK) board ist correct.

Therefore, I have to customize the configuration of DK board. If I´m completly wrong, please tell me :-)

RE: JLink Voltage value for flasdhing change

haakonsh — Thu, 14 May 2020 14:13:32 GMT

It's the target board you need to erase since they are the ones who have a REGOUT0 register set to 3V3.

RE: JLink Voltage value for flasdhing change

simon1516 — Thu, 14 May 2020 12:04:54 GMT

I had another brand new 52833 DK board here, the first connect to USB power and execute "nrfjprog -f nrf52 -e" doesn´t work for changing VDD voltage. Can I try something other?

RE: JLink Voltage value for flasdhing change

simon1516 — Thu, 14 May 2020 08:34:38 GMT

There was no target connected to dk board, so I erase the dk board

RE: JLink Voltage value for flasdhing change

haakonsh — Thu, 14 May 2020 07:34:07 GMT

Did you erase the target on your custom board or on the DK?

RE: JLink Voltage value for flasdhing change

simon1516 — Wed, 13 May 2020 12:16:21 GMT

[quote userid="13562" url="~/f/nordic-q-a/61257/jlink-voltage-value-for-flasdhing-change/249679"]Call 'nrfjprog -f nrf52 -e' in cmd. This will erase the UICR register REGOUT0 that contains the settings for REG0. [/quote]

I did that (s. Screenshot cmd, I think it was successful because confirmation message) but I can measure about 2.95V level of VDD Pin from nrf52833 DK furthermore.

Is there something else I have to do? Thanks for your help! I already repowered the DK by USB.

RE: JLink Voltage value for flasdhing change

haakonsh — Wed, 13 May 2020 11:09:00 GMT

Call 'nrfjprog -f nrf52 -e' in cmd. This will erase the UICR register REGOUT0 that contains the settings for REG0.

Since you need to use a debugger for that you need to power the external board through the VDD net at 1.8V.

RE: JLink Voltage value for flasdhing change

simon1516 — Tue, 12 May 2020 17:13:53 GMT

[quote userid="13562" url="~/f/nordic-q-a/61257/jlink-voltage-value-for-flasdhing-change/249467"]Since the default voltage of REG0 is 1.8V[/quote]

That is my problem. VDD Voltage of a 3rd party board is configured to 3V. So I can´t supply this board on my custom PCB (which includes this 3rd party board), because there are components working with 1,8V, powered by VDD. So I have to change VDD configuration before I can connect lipo battery to VDDH.

Therefore I have to change VDD from nrf52833 DK board to 1,8V. After doing this, I can flash firmware with this voltage level to the PCB.

Because of that, I need to know, how to change VDD voltage level of 52833 DK board.

Could you help me with that?

RE: JLink Voltage value for flasdhing change

haakonsh — Tue, 12 May 2020 12:32:04 GMT

Since the default voltage of REG0 is 1.8V you just need to power the target device through VDDH or supply 1.8V directly to the VDD net.

RE: JLink Voltage value for flasdhing change

awneil — Mon, 11 May 2020 20:39:44 GMT

Sorry, I've not tried that.

RE: JLink Voltage value for flasdhing change

simon1516 — Mon, 11 May 2020 20:10:45 GMT

Yes, I use nRF52833 DK, this also support 1.8V targets:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf52833_dk%2FUG%2Fnrf52833_DK%2Fhw_debug_out.html

But I need help for configurate this in the firmware. Can you help me with that?

RE: JLink Voltage value for flasdhing change

awneil — Mon, 11 May 2020 17:16:04 GMT

Ah, sorry - you didn't say which DK you were using.

The nRF52832 DK doesn't support 1.8V targets, but it seems the nRF52840 DK does:

infocenter.nordicsemi.com/.../hw_debug_out.html

RE: JLink Voltage value for flasdhing change

simon1516 — Mon, 11 May 2020 17:04:20 GMT

hmm...my information was, that programming voltage can be adjust by changing VDD, which is configurable. So if VDD of DK = 1,8V, the board is able to flash with these 1,8V. Isn´t that right?

Which alternate programmer can you recommend?

RE: JLink Voltage value for flasdhing change

awneil — Mon, 11 May 2020 16:01:28 GMT

[quote userid="88554" url="~/f/nordic-q-a/61257/jlink-voltage-value-for-flasdhing-change"] "P19 debug out connector" from DK[/quote]

That does not support a 1.8V target.

You will need a real J-Link for that.

(or other 1.8V-capable programmer)