KSCAN sample build fail

RE: KSCAN sample build fail

isilio — Fri, 25 Aug 2023 12:47:23 GMT

Hello,

have you any solutions? I would like to use kscan in the same way as LandyWang on nrf9160, but I have the same error.

RE: KSCAN sample build fail

Raoul — Tue, 18 Apr 2023 23:02:15 GMT

Hi Landy, thanks for the info! I'll try to replicate what you did, and see if I can find out more.

Best regards,

Raoul

RE: KSCAN sample build fail

LandyWang — Thu, 13 Apr 2023 06:16:04 GMT

Hello,

I have solved the kscan build fail problem by using device_get_binding instead of DEVICE_DT_GET.

But device_is_ready(kscan_dev) return false when initializing, and the subsequent steps will not be performed.

I think this problem is still related to the setting of the devicetree.

Is there any suggestion for using kscan sample?

RE: KSCAN sample build fail

LandyWang — Wed, 15 Feb 2023 01:35:45 GMT

Hi Raoul,

There is no new progress on my side.I'm still stuck on the devicetree error.

Thank you for your suggestion.I'll look at ZMK for more information.

RE: KSCAN sample build fail

Raoul — Tue, 14 Feb 2023 07:19:30 GMT

Hi Landy,

Thanks for sharing your details! No, I don't think RTT will interfere with the sample.

And as far as I know, only gpio is needed.

I haven't received any suggestions from my team so far. I'll try to reach a developer on this, and keep you updated.

Any progress on your side?

By the way, maybe you are already aware, but there is a Zephyr based open source keyboard firmware called ZMK that you might want to look at. If we don't get further with the NCS sample soon, maybe that could be a better starting point in the interim.

Best regards,

Raoul.

RE: KSCAN sample build fail

LandyWang — Wed, 08 Feb 2023 10:00:07 GMT

Hi Raoul,

Thank you for your assistance.

Here is my prj.conf. I added RTT CONFIG to the sample for debugging, but I don't think this will lead to the build fail of the kscan sample.

CONFIG_STDOUT_CONSOLE=y
CONFIG_PRINTK=y
CONFIG_KSCAN=y

#RTT
CONFIG_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_UART_CONSOLE=n

I try to connect nrf5340dk with a homemade 3x3 keypad. The keypad only have 6 gpios and doesn't need i2c or other parts.
Does the Keyboard matrix connected to the Kscan sample need other hardware other than gpio? Or if there are other matrix keyboards that are compatible with kscan, please let me know.

Thank you for your suggestion, I will use a clean build when building kscan to prevent possible NCS cache issues.

I want to implement a simple matrix keyboard. I think kcan is the closest sample, so I use it. If there are other samples that can implement a matrix keyboard, please let me know.
I will try to continue to modify the kscan sample and try to get more information from the test modification.
Thank you again for your assistance.

RE: KSCAN sample build fail

Raoul — Wed, 08 Feb 2023 08:47:16 GMT

Hi Landy,

I haven't reached a conclusion yet. Sorry for my poor communication!

I have followed the case you linked to, and the linked private case, and found other related cases - but all cases seem to remain unresolved. Working with the Kscan sample is tricky as it seems to be designed to be used together with a configured driver, and an actual scan matrix keyboard. So both customers and Nordic engineers don't have the setup that this sample assumes. I assume you are also getting this CMake error (in addition to your devicetree issue):

CMake Warning at /opt/nordic/ncs/v2.2.0/zephyr/CMakeLists.txt:824 (message):
  No SOURCES given to Zephyr library: drivers__kscan

By the way, could you share your prj.conf with me? Or is it completely unmodified from the kscan sample?

Also, what kind of hardware are you trying to connect?

Regarding your suggestion, I don't think there is anything directly wrong with DEVICE_DT_GET(DT_NODELABEL(kscan0)). I tried replacing DT_NODELABEL with for example DT_ALIAS(kscan0) and DT_CHOSEN(kscan), but issue remains. However, I should note that when trying these DT functions, one time I seemed to have some cached value that only changed when I deleted the build folder, and not when doing a pristine build. I'm not sure what was going on there, but just in case, could you try doing a "clean build" like that? An NCS cache issue like that has happened before (but very rarely).

I have asked internally for suggestions on this issue. I'll let you know if I receive anything useful, and I'll try to keep you updated more regularly.

Sorry to leave you all stuck with this issue.

Best regards,

Raoul

RE: KSCAN sample build fail

LandyWang — Thu, 02 Feb 2023 01:22:47 GMT

Excuse me,
Is there any suggestions on this issue? I'm still waiting for a reply.

RE: KSCAN sample build fail

Raoul — Fri, 20 Jan 2023 08:49:33 GMT

Hi, thanks for letting us know. I had to prioritize other cases the past few days but I'm now investigating this. I'll get back to you when I know more!

Best regards,

Raoul

RE: KSCAN sample build fail

YoyoBlue — Thu, 19 Jan 2023 08:30:24 GMT

I'm trying to build lvgl sample in \ncs\v2.2.0\zephyr\samples\subsys\display\lvgl on nrf52840dk. Also, we have similar building error with kscan and "const struct device *kscan_dev = DEVICE_DT_GET(KSCAN_NODE);". We'd like to follow up this discussion to see if it is solved.

RE: KSCAN sample build fail

LandyWang — Thu, 12 Jan 2023 09:26:53 GMT

Hi Raoul,

It's OK.I will wait for you.

I'll keep trying to modify my code for this problem, and if there are new test results, I will post them here.

Thank you for your assistance.

RE: KSCAN sample build fail

Raoul — Thu, 12 Jan 2023 08:31:46 GMT

Hi Landy,

Just wanted to inform you that I need a little more time, I'm a bit busy at the moment.

Thanks for waiting!

Best regards,

Raoul

RE: KSCAN sample build fail

Raoul — Tue, 10 Jan 2023 08:30:37 GMT

Hi Landy,

Just wanted to let you know that I'm investigating your case. We usually try to answer within two days, weekends not included. I'll see if I have more info for you tomorrow.

Best regards,

Raoul

RE: KSCAN sample build fail

LandyWang — Tue, 10 Jan 2023 01:05:03 GMT

Hello,

I have been waiting for days.

I'm still waiting for reply ....

RE: KSCAN sample build fail

LandyWang — Fri, 06 Jan 2023 05:04:42 GMT

I found https://devzone.nordicsemi.com/f/nordic-q-a/89743/adding-a-3x3-shield-button-board-to-nrf5340-dk/377946 had the same problem as I encountered,but I have no idea how to solve since it end up with a private case.

According to the description of DEVICE_DT_GET,DEVICE_DT_GET will find a device reference from a devicetree node identifier,and return a pointer to a device object created from a devicetree node. If no device was allocated, this will fail with an error that looks like `undefined reference to __device_dts_ord_<N>`.

This is my zephyr.dts.

devzone.nordicsemi.com/.../5700.zephyr.dts.txt

"kscan0" declared in zephyr.dts,but DEVICE_DT_GET did not find it.

I don't know how to proceed with this problem.

RE: KSCAN sample build fail

MatrixX — Thu, 05 Jan 2023 14:43:56 GMT

following - I have the same error