todo

USB Host 开发中支持数码相机的源码。即Picture To Picture协议的完整实现

TODO for 1.0 release:

- Code cleanup (add comments, remove dead code etc.)
- free() all malloced memory (no memroy leaks)
- Finish README, document ptpcam features
- check and improve (if necessary) build system

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Unordered TODO list:

-- consider the idea of adding lasterror variable to PTPParams