How to get Bluetooth Bootloader up and running??

[Flemming Jensen]

Hi,

I am having BIG problems getting the Bluetooth Dual Bank Bootloader sample to work!

I am using Keil 5.18 and using SDK version 9.0.0 and also tried 10.0.0. I have S310 working together with a application using both ANT+ and BT. No problems what soever...

But now I want to add a bootloader functionality so that I can update the firmware remotely if I need to.

I use the following recipee:

• First I clear the CPU using nRFStudio
• Then I install Softdevice S310 v3.0.0 in the device (116KB)
• I use the sample BLE_DFU_DUALBANK_S310 (not sure this is the exact name :))
• From either V9 or V10 SDK
• Build the project (which takes 3 compile iterations optimizing for size)
• I have then tried installing the bootloader 2 ways.
• One way is just clicking upload in Keil which uses jrfprog
• Second way is using nRFStudio and install the bootloader here by using the .hex file

I reset the board and then use "NRF Toolbox" on my Android Phone to try and search for the device. But it never comes up.

Actually I think it crashes becuase I cant even lit a LED....

I am pretty stuck here. I cant seem to be able to single step the bootloader for some reason. This way I could possible identify what is going wrong...

Please help

[Vidar Berg]

Strange, you should get an error at link time if there were not enough RAM allocated, is it possible that the set RAM size you had did not correspond with the address range? Also, the RAM allocation in the bootloader doesn't need to be aligned with the application's. Bootloader and application are always started via the reset handler.

That said, the bootloader needs a no init section (IRAM2) that used to share bonding information between application and bootloader.

Do you have 32K or 16K of RAM on the chip you're using?

I'd suggest to open a clean bootlaoder project to ensure you have the default values. With a 16K RAM variant you need to change the linker settings from:

to: