Error[Pe020]: identifier "IWDG_WriteAccess_Enable" is undefined C:\Users\27663\Desktop\GPS\FM33LG Project Sixth code\User\wdt.c 30

根据提供的引用内容，"Error[Pe020]: identifier "IWDG_WriteAccess_Enable" is undefined" 这个错误是在 "C:\Users\27663\Desktop\GPS\FM33LG Project Sixth code\User\wdt.c" 文件的第30行发生的。根据引用，这个错误是由于标识符 "IWDG_WriteAccess_Enable" 在代码中没有被定义所引起的。要解决这个错误，你需要在代码中定义这个标识符。根据提供的引用内容，我无法确定具体的解决方法。但是，你可以尝试检查代码中是否缺少头文件、变量声明或宏定义，或者查看是否在代码中正确引用了相关的库或模块。你也可以参考引用中的Java实现标识符对类的访问控制的代码，思考如何在你的代码中实现类似的访问控制。最好的解决方法是参考相关的文档或向开发人员社区寻求帮助，以获取更具体的解决方案。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [IAR出现Error[Pe020]: identifier “FILE“ is undefined](https://blog.csdn.net/weixin_42550185/article/details/128752000)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [解决error C2065： '_beginthreadex' ：undeclared identifier](https://download.csdn.net/download/lj_70596/17937182)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [Java_implementation_of_access_control_identifier_c_The Class](https://download.csdn.net/download/weixin_42656416/86554621)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
[ .reference_list ]