Dynamic configuration of I2C pin on ncs v2.5.2

[snowuyl]

I can add the following configuration in .dts or .overlay file to define I2C bin statically.

    i2c0_default: i2c0_default {
        group1 {
            psels = <NRF_PSEL(TWIM_SDA, 0, 28)>,
                    <NRF_PSEL(TWIM_SCL, 1, 10)>;
            drive-open-drain;
            bias-pull-up;
        };
    };

Is it possible to define I2C bin dynamically?

[AHaug]

Hi,

In general no, there are no ways to define one dynamically, but you can define multiple I2C instances and initialize and de-initialize them when needed.

Kind regards,
Andreas

[snowuyl]

Thanks for your reply! Does one instance occupy one I2C interface ? Since nRF5340 has limited I2C  interface.

[AHaug]

snowuyl said:

Does one instance occupy one I2C interface ?

Yes, you will have to use the existing peripherals when setting up your I2C instance, so it will be limited to the number of physical I2C' peripherals available

Kind regards,
Andreas

[snowuyl]

Thanks for your great support!