armgcc build hex file always jump to boot after reset

[Dien Nguyen]

Hi support team.

My project build using keil IDE working stable. But when I change to build using makefile, although build success with hex file output and and everything still works but after mydevice reset (hard reset by power or softreset) it's alway jump to boot program. In my app, only when i send command via BLE, i set NRF_POWER->GPREGRET = 0xB1 and call NVIC_SystemReset() to jump to boot. In boot program i see function dfu_enter_flags_clear() was called before start timmer timeout and after check dfu_enter to clear GPREGRET register so i try to clear it to 0 in main program but it can't resolve.

Here is some config detail i used follow as dfu/secure_bootloader

MEMORY
{
  FLASH (rx) : ORIGIN = 0x26000, LENGTH = 0x5a000
  RAM (rwx) :  ORIGIN = 0x20002a98, LENGTH = 0xd568
  bootloader_settings_page (r) : ORIGIN = 0x0007F000, LENGTH = 0x1000
  uicr_mbr_params_page (r) : ORIGIN = 0x10001018, LENGTH = 0x4
  uicr_bootloader_start_address (r) : ORIGIN = 0x10001014, LENGTH = 0x4
}

[Jared]

Hi,

Which SDK version are you using?

Could you step through dfu_enter_check() and check what's requesting the DFU mode?

regards

Jared

[Dien Nguyen]

hi Jared,

i use SDK 15.2 with softdevice 6.1.0

Jared said:

Could you step through dfu_enter_check() and check what's requesting the DFU mode?

how i can check this, call it in main program? Usually i have bootloader hex file, use Jflash to burn softdevice and bootloader hex file into chip. After that i can use keil to load program or use Jflash or use nrf connect (all work). Because if i build hex file using keil ide and flash it to chip, my program is working, but if i use gcc it always jump to bootloader program. So i think have some config not correct or i miss something :((

[Jared]

Hi,

Set a breakpoint in the function, it should be called when you try to enter DFU mode. 

Dien Nguyen said:

Because if i build hex file using keil ide and flash it to chip, my program is working, but if i use gcc it always jump to bootloader program.

Could you share a screenshot of the memory settings that you use in your keil project?

regards

Jared 

[Dien Nguyen]

hi Jared,

to jump to bootloader i set GPREGRET register and then call soft reset. so i can't set debug point there. Here is my config in keil

(edit: sorry, i posted the wrong picture)

[Jared]

Hi,

Which SDK version and Softdevice version are you using? It seems that you have changed the memory setting when I compare the standard example from the SDK with yours. I also see that you haven't defined the mbr_params_page memory region. Could you try changing it back to the original setting? If that doesn't work, could you try changing it to as in Keil? 

regards
Jared