Using 8.0.0 S110 SoftDevice with compiled bootloader and PCA20006 Beacon

[GlennEngel]

I'm trying to update my beacon to use 8.0.0 SoftDevice 110. I've downloaded the 8.0.0 precompiled softdevice hex and loaded the Keil dfu_dual_bank_ble_s110_pca10028 project and changed the C++ options to specify BOARD_PCA20006.

Using nRFGo I can load the 8.0.0 SoftDevice and the bootloader but it does not go into DFU mode. If I do the same thing with the precompiled 7.x hex files for the beacon project it does go into DFU mode.

If I load the 8.0.0 softdevice and just the blinky app (compiled to start at 0x18000), it works fine. However if I add in the bootloader then the blinky app does not run and it does not enter DFU mode either.

I expected that just loading the softdevice and the bootloader that it should enter DFU update mode. Is there something additional needed to get the bootloader to work with 8.0.0 S110?

[MartinBL]

Have you followed this guide step by step?

Do you know if the UICR.BOOTLOADADDR register is set? You can check it by using nrfjprog --memrd 0x10001014.

You will need to use nrfjprog to program the bootloader. The step-by-step guide above shows how to set this up in Keil (but remove the --reset argument). Keil alone is not able to write to the bootloader address area.

The Beacon also has less memory than the nRF51 on the pca10028. This is usually not a problem, but did you update the linker settings to accommodate for this?