Enabling TWIS driver

RE: Enabling TWIS driver

k.leonhardt — Tue, 25 Feb 2025 12:05:38 GMT

Found something

The driver is still not enabled. But I think that I have corrected something since the build output above.

warning: NRFX_TWIS1 (defined at C:/ncs/v2.9.0/zephyr/modules/hal_nordic\nrfx/Kconfig:938,
modules\hal_nordic\nrfx/Kconfig:938) was assigned the value 'y' but got the value 'n'. Check these
unsatisfied dependencies: n (=n). See
http://docs.zephyrproject.org/latest/kconfig.html#CONFIG_NRFX_TWIS1 and/or look up NRFX_TWIS1 in the
menuconfig/guiconfig interface. The Application Development Primer, Setting Configuration Values,
and Kconfig - Tips and Best Practices sections of the manual might be helpful too.

Now the build actually reports that the driver is disabled

I found out that I had removed the

compatible = "nordic,nrf-twis";

from the overlay file, because the original guide I followed instructed not to add it.

Now project compiles. Thanks. Now debugging time . . .

By the way, the examples does not compile in SDK version 2.9. But I got the SDK 2.7 version compiled, after correcting some a invalid reference to the common-pinctrl.dtsi file.

RE: Enabling TWIS driver

Kenneth — Tue, 25 Feb 2025 08:46:47 GMT

If you haven't already you should go through: https://academy.nordicsemi.com/

[quote user="k.leonhardt"]In "old days" we enabled drivers in the sdk_config file. But how do you do it when using the new SDK's?[/quote]

This is done in .conf files, such as this one:
https://github.com/zephyrproject-rtos/hal_nordic/blob/master/nrfx/samples/src/nrfx_twim_twis/boards/nrf52840dk_nrf52840.conf

But also you need the twis in the devicetree:
https://github.com/zephyrproject-rtos/hal_nordic/blob/master/nrfx/samples/src/nrfx_twim_twis/boards/nrf52840dk_nrf52840.overlay

Kenneth

RE: Enabling TWIS driver

k.leonhardt — Tue, 25 Feb 2025 07:33:14 GMT

Hi Kenneth

Thanks for the answer.

But I believe that I generally did as the examples you pointed out. The problem is that the nrfx_twis.c file is not compiled as the driver is not enabled because NRFX_CHECK(NRFX_TWIS_ENABLED) is not true. (And the irq handler would probably not be enabled anyway).

In "old days" we enabled drivers in the sdk_config file. But how do you do it when using the new SDK's?

Kasper

RE: Enabling TWIS driver

Kenneth — Mon, 24 Feb 2025 12:21:00 GMT

Hello,

Unfortunately I do not believe there is support for i2c slave in zephyr.

So I don't see any way to do this without using the nrfx api directly, you can find this as a guide:
https://github.com/zephyrproject-rtos/hal_nordic/tree/master/nrfx/samples/src/nrfx_twim_twis

Kenneth

RE: Enabling TWIS driver

k.leonhardt — Mon, 24 Feb 2025 07:16:04 GMT

I forgot to mention that I'm using the nRF52840-DK as is, and I'm using the board configuration for the board in the build configuration.

RE: Enabling TWIS driver

k.leonhardt — Mon, 24 Feb 2025 07:05:35 GMT

Hi again

I just noticed that when I open the devicetree overlay in the graphical presentation, the I2C1 peripheral is not shown. And if I try to enable it, it is not available.

The other serial peripherals I'm using for other purpose are: SPI3, I2C0, UART0. These are show correctly.

RE: Enabling TWIS driver

k.leonhardt — Sun, 23 Feb 2025 10:48:06 GMT

By the way, I tried to follow the guide on
TWI/I2C implementation with nRFx TWIS Driver

But it uses an old SDK with different pin control setup in the device tree.

RE: Enabling TWIS driver

k.leonhardt — Sun, 23 Feb 2025 09:55:01 GMT

By the way, by looking at the nrfx_twis.c file in VS Code I can se that

#if NRFX_CHECK(NRFX_TWIS_ENABLED)

compiles to false.