upgrade sdk 1.9.1 to 2.0.0

RE: upgrade sdk 1.9.1 to 2.0.0

JONATHAN LL — Fri, 05 Aug 2022 07:08:59 GMT

This does sound strange, can you share more details on what is going on in you system?

What pins are directly controlling this regulator?

What is the voltage on VDD_GPIO?

Can you share your schematic or parts of it? the 9160 section and the power section?

Do you have a nRF9160DK, can you replicate the issue you are seeing there?

Regards,
Jonathan

RE: upgrade sdk 1.9.1 to 2.0.0

Ofir_A — Sun, 31 Jul 2022 08:24:54 GMT

Hi,

[quote userid="91187" url="~/f/nordic-q-a/90433/upgrade-sdk-1-9-1-to-2-0-0/379197"]Are you also getting 2.1V on any other GPIO's or is it just the COEX0?[/quote]

All GPIO's

[quote userid="91187" url="~/f/nordic-q-a/90433/upgrade-sdk-1-9-1-to-2-0-0/379197"]Seems like the is something SW related[/quote]

It is software related since if I go back to SDK 1.9.1 all works perfect

There is something different at SDK2.0.0 from 1.9.1 that is doing this and I don't know what and need help to figure this out

RE: upgrade sdk 1.9.1 to 2.0.0

JONATHAN LL — Thu, 28 Jul 2022 20:45:32 GMT

Hi,

Seems like the is something SW related here.

Are you also getting 2.1V on any other GPIO's or is it just the COEX0?

The COEX pin follows the voltage on the VDD_GPIO on the nRF9160.

Is this a custom board?

- If it is custom, could you also test your SW on a 9160DK, see if it behaves the same way?

Regards,
Jonathan

RE: upgrade sdk 1.9.1 to 2.0.0

Ofir_A — Thu, 28 Jul 2022 05:21:56 GMT

[quote userid="116756" url="~/f/nordic-q-a/90433/upgrade-sdk-1-9-1-to-2-0-0/378903"]Do you have two GPIOs driving in different directions? [/quote]

[quote userid="116756" url="~/f/nordic-q-a/90433/upgrade-sdk-1-9-1-to-2-0-0/378903"]Which pin are you referring to?[/quote]

COEX0

The input for Nordic GPIO is 3.3V but I get out of the Nordic is 2.1V

Can it be somehow related to configuration of the application? when I use SDK 1.9.1 all works perfect

RE: upgrade sdk 1.9.1 to 2.0.0

flaik-wayne — Wed, 27 Jul 2022 12:21:42 GMT

Do you have two GPIOs driving in different directions? This is probably the only way a GPIO could change voltage, unless it is an analog output pin of some kind? Which pin are you referring to?