nrfjprog for serial bootloader

[seanbites]

Hello,

Suppose I flash a device that uses the nrf52832 with a serial bootloader, SD and valid application, can I still write to UICR regions via a serial connection using nrfjprog/nrfutil, or must I use a different method to write to UICR? This is to write a unique ID for the device into UICR via a usb connection to uart.

For example, will the following lines work without a J-link emulator:

nrfjprog --family nRF52 --memrd 0x10001080
nrfjprog --family nRF52 --memwr 0x10001080 --val 0
nrfjprog --family nRF52 -r

Thanks, Sean

[Susheel Nuguru]

What do you mean when you say there is no J-Link emulator? nrfjprog needs Segger chip to communicate with nrfchip because it uses Segger firware to communicate to SWD .

[seanbites]

That answers my question actually, thanks!