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Bootloader hardfault

Sergy

Hi,

Im trying to use BLE DFU Bootloader from examples. I loaded SD8 and then bootloader via nrfStudio (dont have a valid app flashed), but I cant see the device from Android app. I decided to do some debugging via Keil. I recompiled Bootloader with no optimisation and moved bootloader address to 0x3A000.

If I try to debug in Keil it doesnt stop at main, but if i manually press stop it gets into hardfault: image description

Memory settings: image description

Compilation settings: image description

Im using Revision 3 chip. What do I do wrong?

app.zip

hex

Bootloader

Bootloader hex O3

bootloader package without BANK_VALID_APP

Bootloader HEX without BANK_VALID_APP

Memory map according to NRF Studio: Memory map

Bootloader optimisation Level 2 gets stuck on run: image description

Image size > 0x6400

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  • 0

    Your application is 70kB and not 47kB. This means that you need at least 140kB of application flash space( two banks of 70kB each) when using a Dual Bank Bootloader. If you use the default ROM settings for the bootloader, i.e. the bootloader starts at 0x3C000 then you'll have

    0x3C000 - 0x18000 = 0x24000( 144kB left)

    However, extending the bootloader section in order to debug the bootloader you are left with

    0x3A000 - 0x18000 = 0x22000( 136kB left)

    which is not enough and you will get the Data Size Exceeds Limiterror

  • 0 in reply to bjorn-spockeli

    I cant even compile it with Level 0 optimisation, I get this error: ._build\nrf51422_xxac.axf: Error: L6985E: Unable to automatically place AT section bootloader_settings.o(.ARM.__AT_0x0003FC00) with required base address 0x0003fc00. Please manually place in the scatter file using the --no_autoat option.

    If I use 24Kb or 25Kb, same error.

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  • 0 in reply to bjorn-spockeli

    I cant even compile it with Level 0 optimisation, I get this error: ._build\nrf51422_xxac.axf: Error: L6985E: Unable to automatically place AT section bootloader_settings.o(.ARM.__AT_0x0003FC00) with required base address 0x0003fc00. Please manually place in the scatter file using the --no_autoat option.

    If I use 24Kb or 25Kb, same error.

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