how to set default I2C pin(SDA AND SCL) for nrf52832 using UICR customer register?

[dewal]

How to set  SDA= p0.25;and SCL=P0.26 default pin configration.

[dewal]

How to update pin configuration for sda and scl to board permanent via bootloader.

[Turbo J]

You simply cannot do that - the application has full control over which gpio pin has what digital function assigned to. Simply by putting the correct magic number in the peripherial register (PSEL.XXX).

[dewal]

can you explain in depth please .

[Turbo J]

Can you explain in depth why you think you needed that feature, and what you did not understand in the PS, TWI and TWIM chapters?

[dewal]

for the appliaction purpose  design our own IC of nrf52. so i need the default pin configuration for that. can you explain me nrf_sdk I2c example. I am new for nrf so i didn't understand their example.