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也就是说独立看门狗完全是独立运行，不受其他部分程序影响。
''<span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span><span class="tlid-translation-gender-indicator translation-gender-indicator"></span>''
=== 硬件设计 ===
}
}
</syntaxhighlight>独立看门狗喂狗函数，也就是清除计数值。窗口看门狗初始化，使能窗口看门狗时钟，使能中断。<syntaxhighlight lang="c++" line="1" start="5767">void IWDG_FeedHAL_WWDG_MspInit(void){ HAL_IWDG_Refresh(&hiwdg); // 喂狗}</syntaxhighlight>初始化按键S2（PC2引脚）为一般上拉输入。<syntaxhighlight lang="c++" line="1" start="72">void IWDG_FeedIO_Init(voidWWDG_HandleTypeDef *hwwdg)
{
}
</syntaxhighlight>检测当前S2引脚电平，并且返回当前电平状态。窗口看门狗唤醒中断回调函数，我们可以在这个函数中去调用喂狗的函数。<syntaxhighlight lang="c++" line="1" start="9483">uint8_t IWDG_FeedIO_Readvoid HAL_WWDG_EarlyWakeupCallback(voidWWDG_HandleTypeDef* hwwdg)
{
}
</syntaxhighlight>