- 目前通过
TouchGFX canvas widget(touchgfx::Line)画线，每一个线段都需要一个新的touchgfx::Line对象，而每个对象占用112个字节，太耗内存了，完全不够用。。。 - 目前传入识别库的坐标为每个线段的起点和终点坐标，这样识别不出来，需要连续的坐标数据才能更好识别；
- 触摸中断进入太快，
MCU完全处理不过来啊。。。(需要参考一下正点原子画图例程和手写识别例程是怎么处理的！)
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