在当今快速发展的嵌入式系统领域，GPIO（通用输入输出）端口作为关键的硬件接口，发挥着至关重要的作用。无论是微控制器还是处理器，GPIO都是 ...

As you can see in the image, it serves up a webpage (using the Apache2 server) which allows you to change the state of the GPIO pins. It’s not super-complicated, but it is nice to see a step-by ...