Stack Dumps¶
Introduction¶
If the ESP crashes the Exception Cause will be shown and the current stack will be dumped.
Example:
Exception (0): epc1=0x402103f4 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000
ctx: sys
sp: 3ffffc10 end: 3fffffb0 offset: 01a0
>>>stack>>>
3ffffdb0: 40223e00 3fff6f50 00000010 60000600
3ffffdc0: 00000001 4021f774 3fffc250 4000050c
3ffffdd0: 400043d5 00000030 00000016 ffffffff
3ffffde0: 400044ab 3fffc718 3ffffed0 08000000
3ffffdf0: 60000200 08000000 00000003 00000000
3ffffe00: 0000ffff 00000001 04000002 003fd000
3ffffe10: 3fff7188 000003fd 3fff2564 00000030
3ffffe20: 40101709 00000008 00000008 00000020
3ffffe30: c1948db3 394c5e70 7f2060f2 c6ba0c87
3ffffe40: 3fff7058 00000001 40238d41 3fff6ff0
3ffffe50: 3fff6f50 00000010 60000600 00000020
3ffffe60: 402301a8 3fff7098 3fff7014 40238c77
3ffffe70: 4022fb6c 40230ebe 3fff1a5b 3fff6f00
3ffffe80: 3ffffec8 00000010 40231061 3fff0f90
3ffffe90: 3fff6848 3ffed0c0 60000600 3fff6ae0
3ffffea0: 3fff0f90 3fff0f90 3fff6848 3fff6d40
3ffffeb0: 3fff28e8 40101233 d634fe1a fffeffff
3ffffec0: 00000001 00000000 4022d5d6 3fff6848
3ffffed0: 00000002 4000410f 3fff2394 3fff6848
3ffffee0: 3fffc718 40004a3c 000003fd 3fff7188
3ffffef0: 3fffc718 40101510 00000378 3fff1a5b
3fffff00: 000003fd 4021d2e7 00000378 000003ff
3fffff10: 00001000 4021d37d 3fff2564 000003ff
3fffff20: 000003fd 60000600 003fd000 3fff2564
3fffff30: ffffff00 55aa55aa 00000312 0000001c
3fffff40: 0000001c 0000008a 0000006d 000003ff
3fffff50: 4021d224 3ffecf90 00000000 3ffed0c0
3fffff60: 00000001 4021c2e9 00000003 3fff1238
3fffff70: 4021c071 3ffecf84 3ffecf30 0026a2b0
3fffff80: 4021c0b6 3fffdab0 00000000 3fffdcb0
3fffff90: 3ffecf40 3fffdab0 00000000 3fffdcc0
3fffffa0: 40000f49 40000f49 3fffdab0 40000f49
<<<stack<<<
The first number after Exception gives the cause of the reset. a
full list of all causes can be found here
the hex after are the stack dump.
Decode¶
It’s possible to decode the Stack to readable information. You can get a copy and read about the Esp Exception Decoder tool.
For a troubleshooting example using the Exception Decoder Tool, read FAQ: My ESP Crashes.
ESP Exception Decoder¶