nRF52810 Serial Wire Debug be used as GPIO/I2C

[StevenW807]

Hi, dear Nordic 

1) Could nRF52810 Serial Debug Pin be used as GPIO/I2C? 

2) Some post mentions using the external circuit, so that the 2 Serial Wire Debug pins can be used as GPIO. Do you have any reference designs, please? 

Thanks

[ketiljo]

The SWDCLK and SWDIO pins are exclusive for the programmer/debugger and can not be assigned to other functions. 

[StevenW807]

So if I use OTA DFU, then, my SWDCLK and SWDIO will only be used when I upload the program for the 1st time, is that correct? It seems not very "smart" because these 2 pins will just be used once for the entire life. 

Thanks ketiljo

[ketiljo]

That's correct. In case you have to manually program the device, you would need to have access to these pins. Also for debugging you will need this.