Mac OS 下开发N32的例子非常少，我这里偿试做一系列的示例。

今天的主要任务是创建开发环境，经查询资料需要做到如下几步：

1、安装clion

2、安装arm-none-eabi-gcc

3、安装pyocd

1 安装 CLion

在jetbrains官方网站上可以免费安装CLion，但是软件仅可免费试用30天。在30天后可以去某宝买个码永久激活软件，实在要白嫖就需要去查别的资料了。点击此处即可跳转下载CLion。

下载完后安装：

等待安装结束

安装结束后把应程序拉到下面的图标栏

到这里安装clion结束：

arm-none-eabi-gcc编译器安装

在官方下载：https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads

下载结束后打开

点击继续

选择硬盘：

等待拷贝文件结束

安装结束

查看安装位置：

ls /Applications/Arm/bin/
arm-none-eabi-addr2line		arm-none-eabi-gdb
arm-none-eabi-ar		arm-none-eabi-gdb-add-index
arm-none-eabi-as		arm-none-eabi-gdb-add-index-py
arm-none-eabi-c++		arm-none-eabi-gdb-py
arm-none-eabi-c++filt		arm-none-eabi-gprof
arm-none-eabi-cpp		arm-none-eabi-ld
arm-none-eabi-elfedit		arm-none-eabi-ld.bfd
arm-none-eabi-g++		arm-none-eabi-lto-dump
arm-none-eabi-gcc		arm-none-eabi-nm
arm-none-eabi-gcc-10.3.1	arm-none-eabi-objcopy
arm-none-eabi-gcc-ar		arm-none-eabi-objdump
arm-none-eabi-gcc-nm		arm-none-eabi-ranlib
arm-none-eabi-gcc-ranlib	arm-none-eabi-readelf
arm-none-eabi-gcov		arm-none-eabi-size
arm-none-eabi-gcov-dump		arm-none-eabi-strings
arm-none-eabi-gcov-tool		arm-none-eabi-strip

添加环境变量：

在~/.bash_profile下面添加：

export PATH="/Applications/ARM/bin:$PATH"

然后重新加载一下

source ~/.bash_profile

查看arm-none-eabi-gcc版本号：

到此arm-gcc安装成功

3 clion添加Toolchains

在CLion｜Settings ｜Build, Execution, Deployment | Toolchains中，Add一个新的Toolchain，并为其起一个名字：

arm_eabi

c compiler: /Applications/ARM/bin/arm-none-eabi-gcc

c++ compiler: /Applications/ARM/bin/arm-none-eabi-g++

Debugger: 选择/Applications/ARM/bin/arm-none-eabi-gbd

配置编译选项，在CLion｜Settings ｜Build, Execution, Deployment | CMake中Add一个新的编译选项:Debug-ARM-Linux。

Toolchains 选择之前创建的arm-eabi

安装pyocd

安装是会报错

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
    error: [Errno 2] No such file or directory: 'libcapstone.4.dylib'

经查看文档需要安装libusb

brew install libusb

再次安装后可以成功，查看pyocd版本号：

pyocd: error: unrecognized arguments: -v
liujianhuadeiMac:~ liujianhua$ pyocd -V
0.34.3

至少，安装环境完成，下载资料：

https://bbs.elecfans.com/jishu_2313732_1_1.html

用clion打开GPIO下的LedBlink示例：

从Cilon下面的终端窗口进入GCC目录，输入make就可以编译工程：

然后下载.pack到本地，指定烧写的pack:

执行烧写命令：

liujianhuadeiMac:GCC liujianhua$ pyocd flash --target n32g457vel7 --pack /Users/liujianhua/Downloads/N32G457/Nationstech.N32G45x_DFP.1.0.5.pack ./build/output.bin
0000839 I Loading /Users/liujianhua/Downloads/AN_N32G45x_N32G4FR_N32WB452_GCC开发环境应用笔记_V1.0/Nationstech_Library.1.3.0_for_gcc/projects/n32g45x_EVAL/examples/GPIO/LedBlink/GCC/build/output.bin [load_cmd]
[==================================================] 100%
0001759 I Erased 4096 bytes (2 sectors), programmed 4096 bytes (2 pages), skipped 0 bytes (0 pages) at 4.48 kB/s [loader]
liujianhuadeiMac:GCC liujianhua$

这样就成功的完成了工程环境的搭建、编译、下载