笔者在去年利用国庆时间，将Cortex-M7 的国产厂商兆易创新GD32H459移植OpenHarmony轻量系统，但是适配不太完善——只能选择liteos-m接管中断。这样导致使用中断非常麻烦。于是笔者最近将接管中断模式修改为不接管，这样可以方便的使用gd32提供的中断。

相关开源地址：https://gitee.com/GD32H759_OpenHarmony/docs/blob/OpenHarmony-v5.0.3-Release/README.md

往期文章

• 国产兆易创新Cortex-M7 GD32H459适配OpenHarmony轻量系统，代码开源！

• 兆易创新Cortex-M7 GD32H459适配OpenHarmony轻量系统适配教程

• GD32H759IMT6 Cortex-M7 OpenHarmony轻量系统移植——接管中断修改为不接管

如何在GD32H759IMT6 上使用OpenHarmony 5.0.3 轻量系统开发

1.首先搭建好OpenHarmony开发环境后，下载OpenHarmony轻量系统5.0.3r的hi3861代码

# 下载v5.0.3 版本hi3861源码
repo init -u https://gitee.com/openharmony/manifest -b refs/tags/OpenHarmony-v5.0.3-Release -m chipsets/hispark_pegasus.xml -g ohos:mini
repo sync -c
repo forall -c 'git lfs pull'

# 安装依赖
./build/build_scripts/env_setup.sh
source ~/.bashrc

# 下载编译工具
bash build/prebuilts_download.sh

# 执行一遍3861的编译命令确认环境有没有问题
./build.sh --product-name wifiiot_hispark_pegasus --ccache --no-prebuilt-sdk

2.将本组织下GD32H759的vendor和device替换掉上一步拉取的3861代码的vendor和device目录

# 5.0.3版本中需要将third_party/cmsis回退到4.1
rm -rf third_party/cmsis
git clone -b OpenHarmony-v4.1-Release https://gitee.com/openharmony/third_party_cmsis.git third_party/cmsis

rm -rf device
git clone -b OpenHarmony-v5.0.3-Release https://gitee.com/GD32H759_OpenHarmony/device.git device

rm -rf vendor
git clone -b OpenHarmony-v5.0.3-Release https://gitee.com/GD32H759_OpenHarmony/vendor.git

5.0.3版本中需要将third_party/cmsis回退到4.1，如果不回退，会显示cmsis版本太高导致无法编译通过（厂家提供的裸机文件一般是没问题的）

[OHOS ERROR] ../../../device/soc/gigadevice/gd32h7xx/libraries/drivers/src/gd32h7xx_misc.c: In function 'nvic_irq_enable':
[OHOS ERROR] ../../../device/soc/gigadevice/gd32h7xx/libraries/drivers/src/gd32h7xx_misc.c:101:11: error: 'NVIC_Type' {aka 'struct <anonymous>'} has no member named 'IP'; did you mean 'IPR'?
[OHOS ERROR]   101 |     NVIC->IP[nvic_irq] = (uint8_t)temp_priority;
[OHOS ERROR]       |           ^~
[OHOS ERROR]       |           IPR

[OHOS ERROR] Traceback (most recent call last):  

3.编译固件

rm -rf out
./build.sh --product-name GD32H759IMT6_BOARD --ccache --no-prebuilt-sdk