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?

[Kazi Afroza Sultana]

Hello,

''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?''

You can use the Board Configurator app from nRF Connect for Desktop app to set the GPIO voltage.

source. https://docs.nordicsemi.com/bundle/nrf-connect-board-configurator/page/index.html