GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

在引用\[2\]中，GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; 是设置GPIO引脚的上拉/下拉/浮空模式的一种选项。在这种模式下，引脚不会被上拉或下拉，而是保持浮空状态。这意味着引脚不会被外部电源或电阻所影响，而是由外部设备的输入信号直接控制。
#### 引用[.reference_title]
- *1* *2* [STM32自学笔记--1.GPIO初始化配置](https://blog.csdn.net/qq_57346347/article/details/124599976)[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^v91^koosearch_v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [STM32驱动学习---GPIO](https://blog.csdn.net/weixin_43980926/article/details/123643122)[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^v91^koosearch_v1,239^v3^insert_chatgpt"}} ] [.reference_item]
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