Anjum, 27-07-2021 Hello everybody, My situation : - Platform : Linux Ubuntu 20.04.2 LTS - Target hardware : STM32F303xD microcontroller based - Black Magic Probe (firmware 1.7.1, hardware version 3) What did I do : - Compiled a minimal program with GCC/GNU - Start gdb (arm-none-eabi-gdb) - In gdb I entered the following commands : - target extended-remote /dev/ttyACM0 (working !) - monitor swdp_scan (working !) - attach 1 (working !) - file CONV002-CAN-USB.elf (working !) - load (working !) - start Now I get back the following : Temporary breakpoint 1 at 0x8001336: file main.c, line 113. Note: automatically using hardware breakpoints for read-only addresses. Starting program: /home/pier/codeBlocks/projects/CONV002-CAN-USB/101/bin/Debug/CONV002-CAN -USB.elf Program received signal SIGSEGV, Segmentation fault. 0x00000000 in ?? () So the problem is : Why do I get a segmentation fault ? Regards from Pier Tilma Netherlands
A SIGSEGV is a problem in your program. That is not the fault of the debugger. When the program has crashed, you should be back at the gdb command prompt. In many case "bt" (for backtrace) will give you a backtrace of functions involved in the crash. It helps, if the program was compiled with debug symbols enabled (-Og -g). If you be chance ran with BMP git head "BMP hosted v1.7.1-232", update to 233 as 232 had random flash problems. After "load" "compare-section" will reread the flash and compare to the elf file and report errors.
28-07-2021 You were right. The problem was not in the debugger. In the linker script I found that the RAM size was set to 80kb. But that should have been 64kb. After I made that change everything was running fine. Thank you. Regards from Pier Tilma Netherlands
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