寫文章的原因

網上很多人寫了 esp32 的coredump 分析，好吧，我看了下，都是從網上摘抄的，根本跑不通，我想寫一個給大家有用的。

官網文章

https://esp-idf-zh.readthedocs.io/zh_CN/latest/api-guides/core_dump.html

實例分析

1、首先保存 coredump 信息

類似下面的，都是一些字符

sC4AAA4AAABkAQAA fLr8P1Dx/T8U8/0/ gPH9P7Dy/T+suvw/xD/8P7jl/T98uvw/vD/8PxQAAAAAAAAAOGD8P3y6/D8AAAAA BQAAABjn/T9wdGhyZWFkAAcAAFEFNFQAfxTz/T8AAAAAIAsGAAUAAAAAAAAA AAAAAAAAAAAAAAAAAJj8P2iY/D/QmPw/AAAAAAAAAAABAAAAAAAAAAhCQD8AAAAA SB0AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA= hOkRgEoVDkAwBwYAsggOgBDy/T/ku/w/fLr8PwAAAAD/AAAAAAAAAAAAAAAA 8PH9P+S7/D/ku/w/3OUTQAEAAAAhAAYABAAAAAgAAAAcAAAAAAAAAP0UAEANFQBA ........

2、還需要你的 elf 文件

你每次編譯都會生成一個 elf 文件，這個文件是什么鬼東西，自行百度。

3、執行命令

$ ./components/espcoredump/espcoredump.py dbg_corefile cat-wc/build/app_main.elf -c cat-wc/build/coredump.bin -t b64 espcoredump.py v0.1-dev GNU gdb (crosstool-NG crosstool-ng-1.22.0-61-gab8375a) 7.10 Copyright (C) 2015 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "--host=i686-build_pc-cygwin --target=xtensa-esp32-elf". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from cat-wc/build/app_main.elf...done. [New <main task>] [New process 1] [New process 2] [New process 3] [New process 4] [New process 5] [New process 6] [New process 7] [New process 8] [New process 9] [New process 10] [New process 11] [New process 12] [New process 13] [New process 14] #0 0x4012cbc3 in ledc_channel_config (ledc_conf=<optimized out>)at /cygdrive/e/AiThinkerIDE_V0.5/cygwin/home/aithinker/project/esp-idf/components/driver/ledc.c:328 328 return ret; [Current thread is 1 (<main task>)] (gdb)

總結

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