mbinna

Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

allanlei

1. Mark device as boot device in configuration descriptor:


      #define USB_CFG_DEVICE_CLASS        0     /* set to 0 if deferred to interface */
      #define USB_CFG_DEVICE_SUBCLASS     0
      /* See USB specification if you want to conform to an existing device class.
       * Class 0xff is "vendor specific".
       */
      #define USB_CFG_INTERFACE_CLASS     3   /* define class here if not at device level */
      #define USB_CFG_INTERFACE_SUBCLASS  1

dougalcampbell

/*
 * Accept control commands via USB.
 * 
 * Commands start with '!' and end with '.'
 * Commands have three parts: action, pin, value: !AAPPVV.
 *
 * E.g. '!01p101.' is DigitalWrite, Pin1, value = 1
 *
 * Note: This is currently *very* crude. Much improvement could be made.
 * I think the use of strncpy is eating a lot of memory. Refactor?