I2C devices are not getting detected in NRF54L15 Dev Kit.

[rsramki]

I am unable to detect any i2c device when connected to the Nordic nRF54L15 DK kit. I have change the voltage from 1.8v to 3.3v and Tried and explore other pins in Port 0 and Port 1

I am using SDK 3.0.2 and toolchain version 3.0.2 in VS Code NRF Connect.

Below is Nnr54L overlay file.

 *********NRF54L Overlay File added to Build Configuration ********

&spi21 { status = "disabled"; };

&uart21 { status = "disabled"; };

&i2c21 {    

    status = "okay";

    compatible = "nordic,nrf-twim";

    pinctrl-0 = <&i2c21_default>;

    pinctrl-names = "default";

    clock-frequency = <400000>;

   

    bmi270: bmi270@68 {

        compatible = "bosch,bmi270";

        reg = <0x68>;

        label = "BMI270";

    };

    cap1239: cap1239@28 {

        compatible = "i2c-device";

        reg = <0x28>;

        label = "CAP1239";

        #address-cells = <1>;

        #size-cells = <0>;

    };

};

&pinctrl {

    i2c21_default: i2c21_default {

        group1 {

            psels = <NRF_PSEL(TWIM_SCL, 1, 2)>, <NRF_PSEL(TWIM_SDA, 1, 3)>;

            bias-pull-up;

        };

    };

};

**************

I am using Shell to do i2c scan i2c@c7000 to identify the devices connected in Port 1 Pin 2 SCL and Pin 3 SDA

Proj.Conf 

************

CONFIG_STDOUT_CONSOLE=y

CONFIG_PRINTK=y

CONFIG_PWM=y

CONFIG_SHELL=y

CONFIG_SENSOR=y

CONFIG_SENSOR_SHELL=y

CONFIG_I2C=y

CONFIG_I2C_SHELL=y

*****

The device tree is showing SCL and SDA pins

Scanner output :

Not sure if I am missing any inputs. appreciate any support.

Setup Image : Connections are verified. 

[Priyanka]

Hi,

Could you tell me if this is your custom application or are you working on any of the nRF samples?

Also, have you used the DK previously for programming any other samples?

-Priyanka

[rsramki]

Was double-checking on the connections and found out that P1.2 and P1.3  are not connected to headers; these are used by NRF54L DK for NFC and not avaliable on the header and have change to Pin 1.11 and P1.12, which are free as per https://docs.nordicsemi.com/bundle/ug_nrf54l15_dk/page/UG/nRF54L15_DK/hw_desription/connector_if.html

After these changes, I am able to get i2c Scan running !.. 

Thanks for your support.