系统基于ADSP-BF548 EZ-KIT Lite，基于2维DMA的实时视频流的采集存储和LCD实时显示；字库移植，overlay的显示，串口升级主程序，按键调整十字光标的位置-System is based on ADSP-BF548 EZ-KIT Lite, based on real-time acquisition and storage 2-dimensional DMA' s video stream, and LCD real-time display font tran