Hello,
I am using nRF52840, SDK_16.0.0, S140 SoftDevice and Segger 4.16 for flashing the image.
This issue is similar to below ticket with -eraseall and chiperase options.
https://devzone.nordicsemi.com/support/241767
Let me give little background. I have two merged hex files.
Merged file 1: “Secure Serial Bootloader” + “Soft Device + MBR” + DTM application + “Bootloader settings page”. (Changed Flash & Ram address macros similar to ble_app_blinky)
Merged file 2: “Secure Serial Bootloader” + “Soft Device + MBR” + BLE Blinky application + “Bootloader settings page”.
For first time when I flash any merged hex file it works. But when I flash other merged file on top previous merged file with –erasepage or –sectorerase options its failing.
1) I want to erase only Flash but not UICR. I used below sequence
nrfjprog -f NRF52 --erasepage 0
nrfjprog -f NRF52 --program BLSD_DTM_CT40_V2.hex --verify -r
For first time it worked properly. But when I repeat same sequence and trying to flash same hex file, I am getting error. Below is the snapshot.
a) Whether -erasepage 0 will erase entire Flash from Page 0 to Page 255.
b) Even I tried “nrfjprog -f NRF52 --erasepage 0x000000-0x100000”. But still failing.
c) Whether ‘erasepage’ will not erase Page 0 (Similar to nRF51).
d) Below is my nrfjprog version
2) Even I use –sectorerase. After –eraseall, for first time I am able to flash my binary. But when I try to flash other merged file its failing.
3) Is this because of me using –verify option. As verify will verify Flash, RAM, UICR and XIP regions.
- Whether can I verify only flash rather than RAM, UICR and XIP regions.
4) I want to write my project specific details in UICR. Using below command, I am able to write.
nrfjprog -f NRF52 --memwr 0x1000108C --val 0xDDCCBBAA –verify
But how to erase only specific location. Using --eraseuicr option will erase entire UICR
nrfjprog -f NRF52 --eraseuicr
Thanks & Regards
Vishnu Beema
