FRDM-K64 break in IRQ

[oaf]

I've got into a serious problem today when trying to set a breakpoint in an IRQ function on my FRDM-K64 board.

When the breakpoint is hit the console is continuously showing some read from target, it will not stop

and the stack-frame is only partly filled in namely the function-name of the break-point function

is shown but not the previous ones....

The HDTR Debug [GDB SEGGER J-Link Debugging] JLinkGDBServerCL:

Read 4 bytes @ address 0x0000058A (Data = 0xBC08B672)

Read 2 bytes @ address 0x00000584 (Data = 0xB408)

Read 2 bytes @ address 0x00000586 (Data = 0xB662)

Read 2 bytes @ address 0x00000588 (Data = 0x4790)

Read 4 bytes @ address 0x0000058A (Data = 0xBC08B672)

Read 2 bytes @ address 0x00000584 (Data = 0xB408)

Read 2 bytes @ address 0x00000586 (Data = 0xB662)

Read 2 bytes @ address 0x00000588 (Data = 0x4790)

Read 4 bytes @ address 0x0000058A (Data = 0xBC08B672)

Read 2 bytes @ address 0x00000584 (Data = 0xB408)

Read 2 bytes @ address 0x00000586 (Data = 0xB662)

Read 2 bytes @ address 0x00000588 (Data = 0x4790)

Read 4 bytes @ address 0x0000058A (Data = 0xBC08B672)

[oaf · Accepted solution]

It seems that the problem is that GDB is trying to get an infinite stack-backtrace.

The solution is to add this command to the Debugger->Commands:

    set backtrace limit 20

Ref:

KDS debug for K22F120M in interrupt enviroment.