nRF52810 Secure BLE DFU on IAR - not connecting

[skhan80]

Dear all members,

I understand that Secure BLE DFU official support is only for SD132, but I am developing a product for nRF52810 which can only run SD112 and I want to be able to update the application via BLE DFU (SD and Bootloader update requries dual bank and there is not enough memory on 52810). I am currently developing on an nRF52832 Development Kit emulating an nRF52810, running SoftDevice 112 v5.1.0, and using the IAR IDE. 

I am trying to change the IAR bootloader_secure_ble example in SDK 14.2 to work on the nRF52810 based on the following link: https://devzone.nordicsemi.com/f/nordic-q-a/27185/52810-how-to-use-dfu

So far I have failed. I have mimicked the link answer exactly and changed the 3 files. The example compiles, and runs (I see "Waiting for events" in Debug mode). The DK advertises as DfuTarg in the Nordic nRF Connect and nRF Toolbox. But when I try to connect to the DK using nRF Toolbox, it hangs and finally says "Error: Device disconnected unexpectedly." The J-Link RTT Viewer shows no new messages. I don't understand why this is happening. I assume that if the link says that the 52810 DFU works for Keil, SES, & GCC then IAR should as well. Can anyone help?

Thank you,

Saad

[Hung Bui]

Hi Saad, 

 

Could you try to debug the bootloader ? You would need to change the optimization level to 0 and then add a break point in the application error handler of the bootloader. 

[skhan80]

Hello Hung,

I have set the C compiler options to "Zero" level optimizations and set a breakpoint in the IDE inside of APP_ERROR_HANDLER(ERR_CODE), but I am still unable to use the IAR Debugger because it fails claiming unsupported .debug_info format version: 4 and Failed to load debugee. I have been getting this error since the beginning of working with this project and I assumed the bootloader cannot be debugged in IAR IDE.

Thank you,

Saad

[Hung Bui]

Hi skhan, 

We have reproduced the issue, and is investigating the problem. We will get back to you as soon as possible.

Hung