Debugging DFU in IAR - SDK12.3.0!!!

[Urvisha Andani]

Hello All,

I am working on nRF51822 use IAR nRF5 SDK 12.3.0.

I am trying to debug the DFU in IAR. At that time i got an error show below

I use IAR version show below,

So pleas give me solution as sson as possible.

Thanks & regards,

Urvisha Andani

[Vidar Berg]

Hi,

It because of the uECC library. The debug information generated by GCC is not compatible with IAR. Try to compile the library without '-g' or compile with '-gdwarf-3' to override the default DWARF version. 

[Urvisha Andani]

hi,

Thanks for reply. 

Can you please share step to compile uECC? I have downloaded uECC library from github but haven't compile it.

[Vidar Berg]

The memory settings are for the 32K RAM variant, while your chip has 16K. Try to change the RAM end address to 0x20004000 and start address to 0x20002500.

Edit: RAM base must be at least 0x200025e0 for the bootloader in SDK 12.3.0

[Urvisha Andani]

Actually I am using mdbt40 custom board in which nRF51822 use.And in this module 32K RAM is available showing in specification of mdBT40 and link is given below,

https://www.seeedstudio.com/MDBT40-256RV3-nRF51822-based-BLE-module.html

[Urvisha Andani]

I also change of RAM address as you told but not run show like below,

[Vidar Berg]

The APP RAM base must be 0x200025e0. Can you try this and see if you get the same result?

[Urvisha Andani]

Thanks for the input by following them my problem got resolved. 

[Vidar Berg]

Thanks for the update. Note that the mdBT40 comes two memory variants so I think you may have the 16K RAM one since you had to change the linker settings to make it work. 

[Urvisha Andani]

Hi,

I add initialization of DFU in my program and then upload program in device. Program runs successfully and starts advertising. 

When I add custom service in my program and then upload program in device at that time program is getting stuck somewhere. so please give suggestion.

[Vidar Berg]

Hi,

Please post a new question since this is unrelated to the original issue you had. The problem may be that you have not increased the NRF_SDH_BLE_VS_UUID_COUNT in your sdk_config.h file and adjusted the APP RAM base address.