gpio_test 测试gpio口 拉低拉高 看状态(Test of GPIO port, low pull and high look state)

Can总线协议-立方体卫星空间协议（源代码） The Cubesat Space Protocol Cubesat Space Protocol (CSP) is a small protocol stack written in C. CSP is designed to ease communication between distributed embedded systems in smaller networks, such as Cubesats. The design