Configuring I2C in nrf54L15-PDK using NCS 2.7.0

[Usama Shafiq]

I want to configure I2C of my nrf54L15-PDK using NCS 2.7.0. How can I do that what necessary changes do I need to make in DTS or Overlay file for it?

[Kazi Afroza Sultana]

Hello,

You can follow this document https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/lessons/lesson-6-serial-com-i2c/ to know how to configure i2C. As the sensor is external t the board, o we need to add an overlay file to specify the external sensor to a child node of 12c node. You will see an example in the above-mentioned document. 

[Usama Shafiq]

devicetree error: F:/TestFiles/blinky_2_7_0/nrf54l15pdk_nrf54l15_cpuapp.overlay:14 (column 1): parse error: undefined node label 'i2c0'


This is the error I get when I add i2c0 node

[Usama Shafiq]

&i2c20 {

    compatible = "nordic,nrf-twim";

    status = "okay";

    clock-frequency = <I2C_BITRATE_STANDARD>;

    pinctrl-0 = <&i2c20_default>;

    pinctrl-1 = <&i2c20_sleep>;

    pinctrl_names = "default", "sleep";

};


here It says that &i2c20_default and &i2c20_sleep is unknown node. 

[Kazi Afroza Sultana]

Hello,

Did you add the child node in the overlay file under i2c20 node?

[Usama Shafiq]

&i2c21 {

    compatible = "nordic,nrf-twi";

    status = "okay";

    reg = <0xc7000 0x1000>;

    pinctrl-0 = <&i2c21_default>;

    pinctrl-names = "default";

    mysensor: mysensor@3c{

        compatible = "i2c-device";

        reg = <0x3c>;

        label = "MYSENSOR";

    };

   

   

};

&pinctrl {

    i2c21_default: i2c21_default {

        group1 {

            psels = <NRF_PSEL(TWIM_SCL, 1, 0)>, <NRF_PSEL(TWIM_SDA, 1, 1)>;

        };

    };

};


I have figured out this thing but now I am facing an issue that GPIO output voltage is 1.8v, but I need it at least 3v on my GPIO's.
Is it possible to increase the output voltage of the GPIO's?