Could not power on normally after programming softdevice, bootloader, and application hex files

[snowuyl]

I am testing programming secure bootloader. But J-Link Commander reports Could not start CPU core. (ErrorCode: -1) after programming softdevice, bootloader, and application hex files. And nRF52832 device can't power on normally. Where can I download nRF52832 bootloader hex file. I would like to recover it.

D:\Temp\Jlink>flash_nrf52832_hex.bat

D:\Temp\Jlink>"D:\Program Files (x86)\SEGGER\JLink_V632i\JLink.exe" -Device NRF52832_XXAA -if SWD -speed 4000 -CommanderScript D:\Temp\Jlink\flash_nrf52832_hex.jlink
SEGGER J-Link Commander V6.32i (Compiled Jul 24 2018 15:20:49)
DLL version V6.32i, compiled Jul 24 2018 15:19:55


J-Link Command File read successfully.
Processing script file...

J-Link connection not established yet but required for command.
Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-STM32F072-CortexM compiled Mar  8 2020 11:15:54
Hardware version: V1.00
S/N: -1
License(s): GDB, RDI, FlashBP, FlashDL, JFlash, RDDI
VTref=3.300V
Target connection not established yet but required for command.
Device "NRF52832_XXAA" selected.


Connecting to target via SWD
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Scanning AP map to find all available APs
AP[2]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x24770011)
AP[1]: JTAG-AP (IDR: 0x02880000)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xE00FF000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ E00FF000
ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTbl[0][5]: E0041000, CID: B105900D, PID: 000BB925 ETM
Cortex-M4 identified.
Erasing device (nRF52832_xxAA)...
J-Link: Flash download: Total time needed: 0.317s (Prepare: 0.047s, Compare: 0.000s, Erase: 0.264s, Program: 0.000s, Verify: 0.000s, Restore: 0.005s)
Erasing done.

Downloading file [D:\Temp\Jlink\softdevice_s132.hex]...
J-Link: Flash download: Bank 0 @ 0x00000000: 1 range affected (155648 bytes)
J-Link: Flash download: Total time needed: 2.890s (Prepare: 0.097s, Compare: 0.016s, Erase: 0.000s, Program: 2.709s, Verify: 0.005s, Restore: 0.062s)
O.K.

Downloading file [D:\Temp\Jlink\bootloader_s132.hex]...
J-Link: Flash download: Bank 0 @ 0x00000000: 2 ranges affected (28672 bytes)
J-Link: Flash download: Total time needed: 0.587s (Prepare: 0.081s, Compare: 0.005s, Erase: 0.013s, Program: 0.442s, Verify: 0.002s, Restore: 0.042s)
O.K.

Downloading file [D:\Temp\Jlink\nrf52832_xxaa.hex]...
J-Link: Flash download: Bank 0 @ 0x00000000: 1 range affected (94208 bytes)
J-Link: Flash download: Total time needed: 1.820s (Prepare: 0.098s, Compare: 0.009s, Erase: 0.000s, Program: 1.647s, Verify: 0.002s, Restore: 0.062s)
O.K.

Reset delay: 0 ms
Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.

Script processing completed.



Type "connect" to establish a target connection, '?' for help
J-Link>q

****** Error: Could not start CPU core. (ErrorCode: -1)

D:\Temp\Jlink>

[Amanda Hsieh]

Hi, 

Can you use j-link debugger whose chip made by SEGGER and try again?

-Amanda

[snowuyl]

Thanks for your suggestion! I will try it on next monday.

[snowuyl]

What is the correct programming sequence? softdevice, bootloader_setting, bootloader, and application hex files?

[Amanda Hsieh]

Hi, 

Bootloader needs Softdevice to enable ble stack. The bootloader settings page is required on the device so that it can boot the application. Among other information, this page contains the CRC value and length of the bootable application (if present). This CRC value is calculated on boot-up to verify that a valid application is present.

Have a look at the Bootloader, Bootloader settings page,  doc.

Amanda

[snowuyl]

I have written one script using nrfjprog to program nRF52832 device. Do I need to change to program softdevice_s132.hex to beginning?

nrfjprog --log --family nRF52 --eraseall
nrfjprog --log --family nRF52 --program  D:\nrfjprog\bootloader_setting.hex
nrfjprog --log --family nRF52 --program  D:\nrfjprog\bootloader.hex
nrfjprog --log --family nRF52 --program  D:\nrfjprog\softdevice_s132.hex
nrfjprog --log --family nRF52 --program  D:\nrfjprog\nrf52832_xxaa.hex

[Amanda Hsieh]

The order should not be an issue. Please let me know if it cannot work. 

-Amanda

[snowuyl]

It works now. But when I refer to http://www.sunyouqun.com/2018/04/nordic-ble-dfu-4-buttonless-app/

It program softdevice.hex before bootloader.hex.

 

nrfjprog -e
nrfjprog --program softdevice.hex
nrfjprog --program bootloader.hex
nrfjprog --program bl_settings.hex
nrfjprog --program %app%
nrfjprog --reset