ChibiOS Free Embedded RTOS

I'm having problems with the Chibi debug plugin with Preview16. Not seeing any information when I open the Eclipse debug plugin for 3.x.x.
I turned on all Debug options in chconf.h and compiled with -O0. I can step thru the code and use gdb normally but no ChibiOS debug info.

OpenOCD invocation:

-c "telnet_port 4444" -s "C:\ChibiStudio\tools\openocd\scripts" -f "interface/stlink-v2-1.cfg" -f "board/stm32f4discovery.cfg" -c "stm32f4x.cpu configure -rtos ChibiOS"

In the debug messages for openocd I see the error messages:

Info : 2459 40032 ChibiOS.c:202 ChibiOS_update_memory_signature(): Successfully loaded memory map of ChibiOS/RT target running version 3.0.3
Debug: 2460 40032 hla_target.c:752 adapter_read_memory(): adapter_read_memory 0x20000888 4 1
Debug: 2461 40036 target.c:2224 target_read_u32(): address: 0x20000888, value: 0x00000000
Error: 2462 40036 ChibiOS.c:332 ChibiOS_update_threads(): ChibiOS registry integrity check failed, NULL pointer
Info : 2463 40036 ChibiOS.c:355 ChibiOS_update_threads(): Only showing current execution because of a broken ChibiOS thread registry.
Debug: 2464 40037 gdb_server.c:2673 gdb_input_inner(): received packet: 'qSymbol::'
Debug: 2465 40037 gdb_server.c:2673 gdb_input_inner(): received packet: 'qSymbol::726c697374'
Debug: 2466 40037 gdb_server.c:2673 gdb_input_inner(): received packet: 'qSymbol:20000878:6368'
Debug: 2467 40037 gdb_server.c:2673 gdb_input_inner(): received packet: 'qSymbol:8006140:63685f6465627567'
Debug: 2468 40037 gdb_server.c:2673 gdb_input_inner(): received packet: 'qSymbol:8004560:6368537973496e6974'
Debug: 2469 40037 hla_target.c:752 adapter_read_memory(): adapter_read_memory 0x20000888 4 1
Debug: 2470 40040 target.c:2224 target_read_u32(): address: 0x20000888, value: 0x00000000
Error: 2471 40040 ChibiOS.c:332 ChibiOS_update_threads(): ChibiOS registry integrity check failed, NULL pointer
Info : 2472 40040 ChibiOS.c:355 ChibiOS_update_threads(): Only showing current execution because of a broken ChibiOS thread registry.

Hi,

Try executing the code past chSysInit(), the threads list is not initialized before that so info cannot be retrieved.

Giovanni

I ran it well past chSysInit(). Still no Debug info with the ChibiOS plugin.


See these several times:

Error: 2964 58014 ChibiOS.c:332 ChibiOS_update_threads(): ChibiOS registry integrity check failed, NULL pointer
Info : 2965 58014 ChibiOS.c:355 ChibiOS_update_threads(): Only showing current execution because of a broken ChibiOS thread registry.

It is possible you got a stack overflow and the registry is corrupt.

Giovanni

I see the same result when I run the unmodified demo RT-STM32F407-DISCOVERY with the F4 Discovery board (except for the chconf.h debugs and the Makefile -O0). I do see thread info from the "info threads" command but still nothing from the ChibiOS plugin.


With all the debugs turned on would a stack overflow not result in some sort of error message? Anything I else I could investigate?

Thanks!
--dave

You could verify if the Eclipse ChibiOS debug plugin (in ChibiStudio) is able to enumerate the threads.

If it is able then it is a problem in OpenOCD else there must be some memory corruption.

Giovanni

I've attached a screen capture. The Eclipse ChibiOS debug plugin doesn't show any thread information.

You need to refresh the view in order to see anything, see the button on the right.

Giovanni

The refresh button did the trick.

Thank you Giovanni!