Secure DFU Bootloader debugging for nRF51822_xxAA

[Plutok Oleg]

I am using example DFU project (bootloader_secure) from SDK (12.3). Chip 51822QFAA. My problem is that I cannot start to debug session in Keil5. Use JLink. I can program target(through J-Link interface) and start the application, but I cannot set traps and check where the program is at the moment in sources (only in disassembly). Should I do some extra settings in Keil? Before debugging I erase chip, flash s130 SD (2.0.1)

[Vidar Berg]

Hi,

Have you updated the linker configuration to ensure RAM usage is within 16K? The SDK examples are configured for the xxAC part which has 32K of RAM.

Linker configuration for xxAA part:

Also, the nRF51 programming algorithm used by Keil does not support writing the UICR where the bootloader start address is stored (@0x10001014). This may explain way the program never reaches main. Have you tried to load the FW with nrfjprog / nrfgo studio first?

Edit 12.12 Are you able to place breakpoints in the code? I'm wondering if the debug information is included in your executable. Please make sure that this option is enabled as shown in screenshot above.

Attachment:

• boot.zip

[Plutok Oleg]

my target settings ROM: start - 0x36000 size - 0x9C00 RAM: start - 0x200025E0 size - 0x1A20

utilites settings command: nrfjprog.exe arguments: --family NRF51--program "#H"

[Plutok Oleg]

if I step (F11) in the disassembly window, I reach the address 0x00036108, but in source window nothing changes

[Plutok Oleg]

I have done the experiment. Set ROM start to 0. Erase chip. Program target. No changes - in source window I cannot set traps and check where the program is at the moment in sources

[Plutok Oleg]

The example from SDK 11 (bootloader) works ok, but the example from SDK 12.3 ((bootloader_secure) doesn't not.