Externally access LED on Thingy 52

RE: Externally access LED on Thingy 52

alexa — Wed, 21 Oct 2020 09:40:56 GMT

Hi Mr. Simonr - do you have any idea on this, by any chance? Thanks in advance!

RE: Externally access LED on Thingy 52

alexa — Wed, 21 Oct 2020 09:29:49 GMT

Hello and thanks for the suggestion. But I already looked at that and my question is more specific - can this:

[quote userid="92310" url="~/f/nordic-q-a/67426/externally-access-led-on-thingy-52/275977#275977"]How could I route out the signal which turns on those LEDs to a simple GPIO [/quote]

be done? (from my perspective, no - but you and the Nordic team are the experts on this) 💯

RE: Externally access LED on Thingy 52

Kenneth — Wed, 21 Oct 2020 07:50:51 GMT

The hardware files can be downloaded from:
https://www.nordicsemi.com/Software-and-tools/Prototyping-platforms/Nordic-Thingy-91/Download

Edit: I guess this was thingy52 hardware files:
https://www.nordicsemi.com/Software-and-tools/Prototyping-platforms/Nordic-Thingy-52/Download

Likely you can look at the schematic and layout.

RE: Externally access LED on Thingy 52

alexa — Tue, 20 Oct 2020 14:59:20 GMT

Hi anweil and thanks for the idea. Unfortunately, that is not my point. I do not lack extra GPIOs, in general.

Instead, I need to reroute the specific signal from the Thingy main LED to one of those GPIOs. Maybe now I cleared my question more. 🙂

RE: Externally access LED on Thingy 52

awneil — Tue, 20 Oct 2020 14:54:12 GMT

[quote userid="92310" url="~/f/nordic-q-a/67426/externally-access-led-on-thingy-52/275977#275977"]instead of turning on the integrated LED, to set a GPIO (to use this signal further).[/quote]

Have you looked at section 7.11, "Interface", in the document you linked?

"Extra GPIOs can be found on connector P4 (see Pin maps on page 54). In addition to P4, some of the GPIOs are available on connectors P5-P8. These connectors are compatible with the Grove system from Seeedstudio. P5 and P7 are connected to the same I2C bus as the low power accelerometer, and only I2C devices should be connected to these connectors. P6 has two analog/digital I/Os and P8 has one"

RE: Externally access LED on Thingy 52

alexa — Tue, 20 Oct 2020 14:24:56 GMT

Hi. A small update: after studying a bit Figure 19: LED schematic from the mentioned data sheet, I realised that the question needs some clarification. Hence the reformulation:

How could I route out the signal which turns on those LEDs to a simple GPIO (e.g. to P0.02)?

The reasoning behind would be to run the light switch demo on Thingys, but instead of turning on the integrated LED, to set a GPIO (to use this signal further).

I did this thing on the nRF52840 devboard, from re-routing the according pins from the pca file, but here it seems more tricky.

Thanks in advance!