nrf5340dk build error with CONFIG_QDEC_NRFX and CONFIG_SENSOR enabled

Hi,

Try changing the &qdec in your overlay file to &qdec0.

Hello,

this worked, thanks.

Does this also meant that I can define multiple qdec configuration for reading multiple encoders (qdec0,qdec1, etc) ?

Yes, there are 2 qdec peripherals on the nrf5340, qdec0 and qdec1.

Hello,

thank you for the feedback.

I tried updating the overlay file like the following:

encoder0: &qdec0 {
status = "okay";
a-pin = <3>;
b-pin = <28>;
enable-pin = <30>;
led-pin = <0xFFFFFFFF>;
led-pre = <0>;
steps = <24>;
};

encoder1: &qdec1 {
status = "okay";
a2-pin = <4>;
b2-pin = <29>;
enable-pin = <31>;
led2-pin = <0xFFFFFFFF>;
led2-pre = <1>;
steps = <24>;
};

and then update my code to call for a device binding with the qdec1 device (labelled as encoder1), but it failed (no device found).

I also tried using an overlay file with only the qdec1 configuration and update d my code accordingly but this also failed.

Any ideas about what could be the issue?

Also you referenced the qdec peripherals. Where can I read about the chip peripherals ?

Hello,

thank you for the feedback.

I tried updating the overlay file like the following:

encoder0: &qdec0 {
status = "okay";
a-pin = <3>;
b-pin = <28>;
enable-pin = <30>;
led-pin = <0xFFFFFFFF>;
led-pre = <0>;
steps = <24>;
};

encoder1: &qdec1 {
status = "okay";
a2-pin = <4>;
b2-pin = <29>;
enable-pin = <31>;
led2-pin = <0xFFFFFFFF>;
led2-pre = <1>;
steps = <24>;
};

and then update my code to call for a device binding with the qdec1 device (labelled as encoder1), but it failed (no device found).

I also tried using an overlay file with only the qdec1 configuration and update d my code accordingly but this also failed.

Any ideas about what could be the issue?

Also you referenced the qdec peripherals. Where can I read about the chip peripherals ?

You can look up information about the chip, including peripherals, in the product specification:

https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/qdec/qdec.html?cp=3_0_0_6_23

https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/memory/appmem.html?cp=3_0_0_4_2_0#instantiation

Hm, looking at the nrfx_qdec driver, I am seeing some issues that seem to be preventing qdec1 from functioning.
I will ask about this internally and get back to you.

Thank you very much. If you have any update please let me know.

In the meantime I will study the input about peripherals to get a better understanding.

Hello Oivind,

hope you are fine.

Did you find out anything?

Hi again,

Yes, unfortunately qdec1 is not currently supported by the nrfx_qdec driver, but support will be a part of a future release.

Hello Oivind,

thank you for the update. Is there any suggested way for reading the 2nd encoder until the qdec1 is released ? Should I use the gpio driver ? Is there any sample code doing something like this ?