基于USB的LED灯光控制器的设计与实现

基于USB的LED灯光控制器的设计与实现

摘　要: 提出了一种在LED灯光控制领域实现同步和回放控制方式的解决方案,并在实际的LED灯光显示屏中得以实现。对其系
统原理、软硬件结构进行了论述,重点分析了LPC2148 USB模块编程要点、块存储设备SD卡在同步和回放方式下的作用以及由CPLD
和SRAM构建码流缓冲的大容量FIFO存储器的软件实现方法。测试结果表明,该控制器播放灯光景致流畅、易于操作,实现了一种
新的LED灯光控制方式。

Abstract: The solution of synchronous and p layback control mode in LED lighting control area is p roposed; and its p ractical app lication on LED lighting disp lay panel is imp lemented. The p rincip le and hardware and software structure of the system are expounded; the main points in p rogramming of LPC2148 USB module, the function of block storage device SD card in synchronous and p layback control mode, and the soft2 ware imp lementing method of large capacity FIFO buffer structured by CPLD and SRAM are analyzed emphatically. The result of test illustrates that the controller p lays the light scene smoothly under simp le operation, and that it brings a new LED lighting control pattern to us.