Thingy91 GPIO basic example

RE: Thingy91 GPIO basic example

Simon — Tue, 01 Dec 2020 12:49:49 GMT

Could you test the sample below with NCS v1.4.0?devzone.nordicsemi.com/.../6371.GPIO_5F00_NMOS_5F00_THINGY91.7z

If you're encountering problems with SES, please install the Toolchain Manager and open SES through that tool. The Toolchain Manager is still experimental with macOS, but it's worth a try.

I have not actually tested the sample yet, but made sure it built successcully (I got one warning though I didn't have/take time to fix).

Best regards,

Simon

RE: Thingy91 GPIO basic example

Alejandro Chavez — Thu, 26 Nov 2020 16:16:57 GMT

Hi Simon! Thanks for your reply!

I have followed the steps and when I try to build with Segger Embedded Studio, this is my output:

What could be the error here?

RE: Thingy91 GPIO basic example

Simon — Thu, 26 Nov 2020 08:03:25 GMT

Hello Alejandro.

Unfortunately I do not have the code. But do the following to reproduce it:

Use an older NCS version, I think v1.0.0 (This ticket a year old, and I think that was the NCS version being used around that time)
Copy the sample ncs/zephyr/samples/hello_world and put the code the customer provided into hello_world/main.c
Add the modifications I mentioned (sleep time to 2000 and pin number to 13)

By the way, the code is quite simple, so I don't think there is too much to change to make it work with NCS v1.4.0

Best regards,

Simon

RE: Thingy91 GPIO basic example

Alejandro Chavez — Tue, 24 Nov 2020 14:22:14 GMT

Hi Simon! Can you send me the folder and configurations that you have used to make this test?

RE: Thingy91 GPIO basic example

Simon — Tue, 29 Oct 2019 13:17:36 GMT

I was able to make an LED blink, using your example (I changed sleep time to 2000 and pin number to 13). My circuit is:

1V8 (on the same header as the NMOS pins) → 220-ohm resistor → LED → NMOS Pin 1D → NMOS Pin 1S → GND

Best regards,

Simon

RE: Thingy91 GPIO basic example

gerardmason — Fri, 25 Oct 2019 00:06:28 GMT

One other thing to note: for all 4 sets of NMOS D/S pins exposed on the board, I get an electrical connection between them with my multimeter's continuity tester, which is not what I was expecting.

RE: Thingy91 GPIO basic example

gerardmason — Thu, 24 Oct 2019 22:11:47 GMT

Thanks!

Just to clarify, my circuit is: 3.3V (from Thingy91 Board) -> Resistor -> LED -> NMOS Pin 4D -> NMOS Pin 4S -> GND

(I was wondering about the circuit but verified it is the same as the example here: https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/thingy-52-mosfet-usage)

With this configuration I'm not seeing any change in the LED. It could be to do with the resistor value - I imagine the NMOS acts as an open circuit when it's activated and the resistor is just for current limiting, but that might be slightly naive thinking.

Cheers,

Gerard

RE: Thingy91 GPIO basic example

Simon — Thu, 24 Oct 2019 11:12:32 GMT

I'm sorry for the delay. I am currently looking into you issue and will try to provide you with an answer as soon as possible.

Best regards,

Simon