no source available for "0x0" in eclipse

RE: no source available for "0x0" in eclipse

Sigurd — Thu, 14 Sep 2017 14:48:26 GMT

The interrupts handler are declared as [weak] in the startup file, which means that you can re-declare it in your application. Then e.g. make a call to the NVIC_SystemReset function to make your program reset on hardfault. But, the default behavior is to run in infinite loops, which is usefully for debugging.

See the hardfault_implementation.cfile located in SDK_folder\components\libraries\hardfault\hardfault_implementation.c

RE: no source available for "0x0" in eclipse

Tru Pheenix — Wed, 13 Sep 2017 17:33:18 GMT

How can we redeclare the hardfault handler?

RE: no source available for "0x0" in eclipse

Sigurd — Fri, 09 Jun 2017 07:40:16 GMT

GCC/eclipse is a bit more demanding to get working compared to Keil where everything works out of the box, but should work quite nicely once you get it up and running.

The hardfault handler is declared in the startup file, but CDT does not parse this file since it's an assembly file. Note that you can re-declare it in your application. ( WEAK declaration in startup)

Steps to incude asm files in CDT:

change the file extension from .s to capital .S in /components/toolchain/gcc
Add the -g3 option to the assembler flags in your makefile.

RE: no source available for "0x0" in eclipse

telemedcar — Fri, 09 Jun 2017 07:15:57 GMT

Why does it work in the KEIL uvision environemnt ? There I am able to step through the "hardfault_handler_keil.c" until I get into the HardFault_c_handler of "hardfault_implementation.c"

I guess there are some settings in the Eclipse project or in Eclipse environment itself which are not right.

RE: no source available for "0x0" in eclipse

Sigurd — Thu, 08 Jun 2017 08:21:30 GMT

Hi, I believe this devzone post should answer your question. Quote RK:

the entire source of the hardfault handler is that piece of assembler on the right hand side which does nothingbut branch to itself forever. of course there's no source for the hardfault handler - it's not a C function.

RE: no source available for "0x0" in eclipse

telemedcar — Wed, 07 Jun 2017 11:31:51 GMT

Actually, this is my current setting in the makefile. However, this did not solve the problem.

RE: no source available for "0x0" in eclipse

Sigurd — Wed, 07 Jun 2017 08:29:35 GMT

Hi,

Try to remove the compiler optimization. In the makefile: CFLAGS += -Wall -Werror -O0 -g3