RE: Migration from nrfconnect 1.9.1 to 2.4.2

Marte Myrvold — Mon, 09 Oct 2023 08:45:45 GMT

Hi,

It seems that you are missing pin control in your devicetree overlay. This was introduced in v2.0.0 of nRF Connect SDK. Please see the Pin control guide for how to migrate to the new pin control mechanism.

Here is an example:

In v1.9.2 the I2C1 node on nRF5340 looked like this in devicetree (from nrf5340_cpuapp_common.dts):

&i2c1 {
	compatible = "nordic,nrf-twim";
	status = "okay";
	sda-pin = <34>;
	scl-pin = <35>;
};

In v2.4.2 the pins are replaced with the pin control node (nrf5340_cpuapp_common.dts):

&i2c1 {
	compatible = "nordic,nrf-twim";
	status = "okay";
	pinctrl-0 = <&i2c1_default>;
	pinctrl-1 = <&i2c1_sleep>;
	pinctrl-names = "default", "sleep";
};

And the pin control node is configured in nrf5340_cpuapp_common-pinctrl.dtsi:

&pinctrl {
	i2c1_default: i2c1_default {
		group1 {
			psels = <NRF_PSEL(TWIM_SDA, 1, 2)>,
				<NRF_PSEL(TWIM_SCL, 1, 3)>;
		};
	};

	i2c1_sleep: i2c1_sleep {
		group1 {
			psels = <NRF_PSEL(TWIM_SDA, 1, 2)>,
				<NRF_PSEL(TWIM_SCL, 1, 3)>;
			low-power-enable;
		};
	};
};

I also recommend checking out our migration guide Migration notes for nRF Connect SDK v2.0.0.

Best regards,
Marte