Flash external nrf51422 with nrf51-dk

[Marcin]

Hello,

I'm trying to flash external nrf51422 module. I want to flash both softdevice and application. I used below commands:

mergehex -m %SOFTDEVICE_NAME% %APP_NAME% -o %MERGE_NAME%
nrfjprog --recover -f NRF51
nrfjprog --program %MERGE_NAME% --verify --chiperase -f NRF51

and I got:

Parsing hex file.
Erasing code flash area.
Erasing UICR flash area.
Applying system reset.
Checking that the area to write is not protected.
ERROR: The operation attempted is unavailable due to readback protection in
ERROR: your device. Please use --recover to unlock the device.

recover command completed fine, but I'm not able to flash. Why recover command doesn't remove readback protection?

When I look into NRF Studio I see information 'ANT device with pre-programed SoftDevice'. My external chip is: nRF51422 QFAACO 1319AJ

Best regards, Marcin

[Marcin]

Hello David,

nrfjprog version: 7.5.2
JLinkARM.dll version: 5.10i

Recover log:

--------------------------------------------------------------------------------
nrfjprog --recover -f NRF51 --log
nrfjprog verion 7.5.2
--------------------------------------------------------------------------------
FUNCTION: open_dll.
FUNCTION: open_dll.
FUNCTION: dll_version.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_without_snr.
FUNCTION: enum_emu_snr.
Device "NRF51822_XXAA" selected.
FUNCTION: recover.
FUNCTION: recover.
Found SWD-DP with ID 0x0BB11477
Found Cortex-M0 r0p0, Little endian.
FPUnit: 4 code (BP) slots and 0 literal slots
CoreSight components:
ROMTbl 0 @ F0000000
ROMTbl 0 [0]: F00FF000, CID: B105100D, PID: 000BB471 ROM Table
ROMTbl 1 @ E00FF000
ROMTbl 1 [0]: FFF0F000, CID: B105E00D, PID: 000BB008 SCS
ROMTbl 1 [1]: FFF02000, CID: B105E00D, PID: 000BB00A DWT
ROMTbl 1 [2]: FFF03000, CID: B105E00D, PID: 000BB00B FPB
ROMTbl 0 [1]: 00002000, CID: B105900D, PID: 000BB9A3 ???
Found SWD-DP with ID 0x0BB11477
Found Cortex-M0 r0p0, Little endian.
FPUnit: 4 code (BP) slots and 0 literal slots
CoreSight components:
ROMTbl 0 @ F0000000
ROMTbl 0 [0]: F00FF000, CID: B105100D, PID: 000BB471 ROM Table
ROMTbl 1 @ E00FF000
ROMTbl 1 [0]: FFF0F000, CID: B105E00D, PID: 000BB008 SCS
ROMTbl 1 [1]: FFF02000, CID: B105E00D, PID: 000BB00A DWT
ROMTbl 1 [2]: FFF03000, CID: B105E00D, PID: 000BB00B FPB
ROMTbl 0 [1]: 00002000, CID: B105900D, PID: 000BB9A3 ???
FUNCTION: close_dll.
FUNCTION: close_dll.

Flash log:

--------------------------------------------------------------------------------
nrfjprog --program test.hex --verify -f NRF51 --log
nrfjprog verion 7.5.2
--------------------------------------------------------------------------------
FUNCTION: open_dll.
FUNCTION: open_dll.
FUNCTION: dll_version.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_without_snr.
FUNCTION: enum_emu_snr.
Device "NRF51822_XXAA" selected.
FUNCTION: read_device_version.
FUNCTION: read_device_version.
Found SWD-DP with ID 0x0BB11477
Found Cortex-M0 r0p0, Little endian.
FPUnit: 4 code (BP) slots and 0 literal slots
CoreSight components:
ROMTbl 0 @ F0000000
ROMTbl 0 [0]: F00FF000, CID: B105100D, PID: 000BB471 ROM Table
ROMTbl 1 @ E00FF000
ROMTbl 1 [0]: FFF0F000, CID: B105E00D, PID: 000BB008 SCS
ROMTbl 1 [1]: FFF02000, CID: B105E00D, PID: 000BB00A DWT
ROMTbl 1 [2]: FFF03000, CID: B105E00D, PID: 000BB00B FPB
ROMTbl 0 [1]: 00002000, CID: B105900D, PID: 000BB9A3 ???
FUNCTION: readback_status.
FUNCTION: readback_status.
FUNCTION: read.
FUNCTION: read.
FUNCTION: close_dll.
FUNCTION: close_dll.

Regards, Marcin