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:

Memory settings:

Compilation settings:

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:

Bootloader optimisation Level 2 gets stuck on run:

[bjorn-spockeli]

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

[bjorn-spockeli]

I found the issue. The image size was 0x6000 bytes and the size reserved for the bootloader was 0x5C00, i.e. 0x400 (1kB) too large.

Change the ROM/RAM settings to the following

IROM1 start: 0x39C00 size:6000

and set BOOTLOADER_REGION_START to 0x00039C00 in dfu_types.h.