UICR register is not retaining it's value after --program command line tool

RE: UICR register is not retaining it's value after --program command line tool

Tajpeer — Thu, 19 Aug 2021 14:05:59 GMT

Thanks for the answer.

Looks like, there is not no issue with the UICR register retaining the data. These registers retaining data even after programming with sector erase option.

Read is returning the correct value. But issue is with RTT viewer where RTT viewer is not sending input if I flash thorugh command line.

Will create another ticket with RTT viewer issue. Thanks.

RE: UICR register is not retaining it's value after --program command line tool

Vidar Berg — Thu, 19 Aug 2021 12:57:39 GMT

Hello,

Do you know if your binary.hex might be including any data in the UICR region? The --sectorerase option will force an erase of the UICR section in that case (i.e. delete any UICR written prior to nrfjprog.exe -r -f NRF52 --sectorerase --program binary.hex). Either way, could you please try to read back the register with nrfjprog to confirm what the value is?

e.g.

$ nrfjprog --memrd 0x100010D0