No source available for " " in debug mode

[Alex]

im following (devzone.nordicsemi.com/.../) step to "Setting up a project for debugging in Eclipse"

i run the debug config and click suspend then get some problems

it shows

• No source available for "HardFault_Handler() at 0x456"
• No source available for "() at 0xfffffff9"
• No source available for "__Vectors() at 0x0"

how to solve it?

[RK]

of course there's no source for the hardfault handler - it's not a C function.

[Alex]

so ... its fine? or i need to fix it?

[RK]

well no, ending up in the hardfault handler is not fine - it means basically that you crashed. However the entire source of the hardfault handler is that piece of assembler on the right hand side which does nothing but branch to itself forever. You don't need to fix the 'source' for the hardfault handler, but you do need to work out why you are there.

You're not debugging bluetooth code, ie stuff where bluetooth is running, by trying to break and then resume are you, that won't work (although it doesn't usually hardfaul, it just stops in the softdevice)

[Alex]

i don't understand , so what should i do to fix it in this situation?

[RK]

work out why you're in the hardfault handler. Unfortunately that's actually hard and requires looking at the registers and crawling around the stack to try and figure it out.

And it all depends in the end what exactly it is you're trying to fix. Does it do this only when you debug it (and you didn't answer the 'are you debugging with bluetooth going question) or are you going right to the hardfault handler on start. If the former, you can't debug the bluetooth stack like that, if the latter, put a breakpoint in somewhere earlier in your code and start stepping to find out where you crash.

SystemInit() and reset_handler() are two places to try. It should get at least to one of those.