Program flashing issue with a bootloader installed

[Bryan H]

NRF52 pca10028 DK - SDK14 - Arm GCC (Eclipse) - SD 5.0.0 - bootloader_secure_ble

Using either nRFGo Studio or eclipse to program the flash (it does it with both)

I can flash the soft device and the bootloader (in that order) and the bootloader starts fine. If I then program the application, it says it flashed OK but still starts the bootloader (not the application).

I can, however load the same exact program via bluetooth (as a zip package) and it starts fine. I don't have a problem doing that, I am just not sure why it flashes OK over ble (via the bootloader) and not through eclipse or nrfgo studio.

I also tried a mergehex with all 3 files and the bootloader only comes up and not the program.

I can use nrfgo studio to program just the softdevice and application - it works fine, just not with a bootloader installed.

When I compare the sizes and addresses of the SD, BL, and App in nrfgo studio if programmed via nrfgo studio (program does not load) and programmed over ble (program starts), I see no differences - they are identical.

Any help would be appreciated!

Bryan

[Nguyen Hoan Hoang]

There is a valid app data structure that the BL check before jumping to the App. nRFGo is too old, it is not updated with new SDK. Use nrfjprog for that mater.

[Bryan H]

I just used nrfjprog and it does the same thing.

I program softdevice first. Reset. Bootlader second. Reset. Then the application. Reset.

The bootloader comes up - not the application. I then can load the application fine over BLE (with or without programing the application first with nrfjprog.