本文介绍在Ubuntu20.04下, VSCode中如何设置对 HC32L110 进行 debug
原文: https://www.cnblogs.com/milton/p/16653827.html
仓库地址: https://github.com/IOsetting/hc32l110-template
如果转载, 请注明出处.
环境说明
本文使用的软硬件环境已经在前面介绍
硬件
基于 HC32L110 系列MCU的开发板
JLink OB
软件
Ubuntu20.04
VSCode
配置步骤
安装配置 Cortex-Debug
在VSCode的插件中, 搜索安装Cortex-Debug
在VSCode中, 切换到Run And Debug, 点击上方的 Add Configuration, 会在 .vscode 目录下的 launch.json (如果没有会自动创建)中添加配置, 需要增加对应的配置信息
- "configurations": [
- {
- "name": "Cortex Debug",
- "cwd": "${workspaceFolder}",
- "executable": "${workspaceFolder}/Build/app.elf",
- "request": "launch", // 可以是launch或attach, 后者表示运行中接入, 前者会执行前置任务并重启
- "type": "cortex-debug",
- "runToEntryPoint": "main",
- "servertype": "jlink",
- "device": "HC32L110X4", // 如果是32K的版本, 需要修改为 HC32L110X6
- "interface": "swd",
- "runToMain": true, // false则从 reset handler 开始停留
- "preLaunchTask": "build", // 根据 tasks.json 中配置的任务填写,
- // "preLaunchCommands": ["Build all"], // 如果不使用 preLaunchTask, 可以用这个参数指定命令行命令
- "svdFile": "", // svd 用于观察外设
- "showDevDebugOutput": "vscode", // 输出的日志级别, parsed:解析后的内容, raw:直接输出, vscode:包含scode调用和raw
- "swoConfig":
- {
- "enabled": true,
- "cpuFrequency": 24000000,
- "swoFrequency": 4000000,
- "source": "probe",
- "decoders":
- [
- {
- "label": "ITM port 0 output",
- "type": "console",
- "port": 0,
- "showOnStartup": true,
- "encoding": "ascii"
- }
- ]
- }
- }
- ]
具体的配置项含义, 可以参考 Debug Attributes
同时在 .vscode/settings.json 中增加以下配置, 如果文件不存在则创建. 路径根据自己的环境修改
- {
- "cortex-debug.gdbPath": "/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb",
- "cortex-debug.JLinkGDBServerPath": "/opt/SEGGER/JLink/JLinkGDBServerCLExe",
- }
修改 rules.mk
在rules.mk中开启debug, 涉及到两处, OPT要使用-O0, 表示不执行任何优化. 使用优化后代码中的部分变量在编译后会被丢弃无法跟踪
OPT ?= -O0
在CFLAGS中增加gdb输出
CFLAGS += -g -gdwarf-2 # original: -g
这样编译后, 尺寸会比原先大不少
Ubuntu20.04下遇到的问题
以上配置后, 点击 Run And Debug 中的绿色运行图标应该就能启动Debug, 但是可能在看到以下输出后就没有反应了
- Reading symbols from /opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-objdump --syms -C -h -w /home/milton/Stm32Projects/hc32_workspace/hc32l110-template/Build/app.elf
- Reading symbols from /opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-nm --defined-only -S -l -C -p /home/milton/Stm32Projects/hc32_workspace/hc32l110-template/Build/app.elf
- Launching GDB: /opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb -q --interpreter=mi2
- 1-gdb-version
这时候到命令行执行一下命令/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb -q --interpreter=mi2就能看到问题
1. libncursesw.so.5: cannot open shared object file
首先是会有这样的错误输出
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb -q --interpreter=mi2
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb: error while loading shared libraries: libncursesw.so.5: cannot open shared object file: No such file or directory
观察ldd可以看到缺少两个so: libncursesw.so.5, libpython3.6m.so.1.0
ldd /opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb
linux-vdso.so.1 (0x00007ffc82998000)
libncursesw.so.5 => not found
libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f326ba1e000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f326ba18000)
libpython3.6m.so.1.0 => not found
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f326b9f5000)
libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f326b9f0000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f326b89f000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f326b871000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f326b68f000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f326b674000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f326b482000)
/lib64/ld-linux-x86-64.so.2 (0x00007f326ba6e000)
libncursesw.so.5可以通过安装 libncursesw5 可以解决
sudo apt install libncursesw5
2. libpython3.6m.so.1.0: cannot open shared object file
这样就剩下另一个动态连接库无法找到
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb -q --interpreter=mi2
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb: error while loading shared libraries: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory
但是 Ubuntu20.04 自带的 Python3.8, 无法安装 Python3.6
~$ sudo apt-get install libpython3.6
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'libpython3.6-stdlib' for regex 'libpython3.6'
0 upgraded, 0 newly installed, 0 to remove and 29 not upgraded.
简单粗暴的解决方法就是直接用3.8的代替
cd /usr/lib/x86_64-linux-gnu/
$ ll libpython*
lrwxrwxrwx 1 root root 19 Jul 1 20:27 libpython2.7.so.1 -> libpython2.7.so.1.0
-rw-r--r-- 1 root root 3455600 Jul 1 20:27 libpython2.7.so.1.0
lrwxrwxrwx 1 root root 55 Jun 23 04:18 libpython3.8.a -> ../python3.8/config-3.8-x86_64-linux-gnu/libpython3.8.a
lrwxrwxrwx 1 root root 17 Jun 23 04:18 libpython3.8.so -> libpython3.8.so.1
lrwxrwxrwx 1 root root 19 Jun 23 04:18 libpython3.8.so.1 -> libpython3.8.so.1.0
-rw-r--r-- 1 root root 5449112 Jun 23 04:18 libpython3.8.so.1.0
$ sudo ln -s libpython3.8.so.1.0 libpython3.6m.so.1.0
这时候再运行就可以启动了
$ /opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb -q --interpreter=mi2
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb: Symbol `PyBool_Type' has different size in shared object, consider re-linking
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb: Symbol `PySlice_Type' has different size in shared object, consider re-linking
/opt/gcc-arm/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb: Symbol `PyFloat_Type' has different size in shared object, consider re-linking
=thread-group-added,id="i1"
(gdb)
使用
点击 Run And Debug 中的绿色运行图标启动Debug, F10 下一步, F11 进入, Shift + F11 跳出. 左侧能观察到变量值和寄存器值. 操作方法和其它IDE基本一致.
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