兼容Tiny OS的TelosB节点加速器扩展方案设计

Design of expansion scheme for accelerator in TelosB compatible with Tiny OS

为满足对无线传感网络(wireless sensor network,WSN)节点高性能和低功耗的需求,提出一种兼容MSP430处理器指令集的硬件加速器扩展方案。使用标准的硬件接口方便挂接新的硬件加速器,实现对现有Tiny OS应用程序兼容的同时,支持通过扩展的Tiny OS组件调用新增的硬件加速器。按照上述方案基于OpenMSP430软核实现一个通过Wishbone总线连接AES(advanced encryption standard)硬件加速器的MSP430兼容处理器,开发对应的AES组件。在FPGA开发板上进行的软硬件仿真结果表明,该设计能够正确执行调用AES加速器的NesC应用程序,验证了方案的正确性。

To meet the needs of high performance and low power consumption for the WSN(wireless sensor network),a hard-ware accelerator expansion scheme which was compatible with the instruction set of MSP430processor and Tiny OS(tiny opera-ting system)and its programs were proposed.This scheme was also capable of facilitating the porting of the operating system through adding extra components.Based on the above scheme and OpenMSP430soft-core,a compatible MSP430processor in-cluding a hardware accelerator namely,AES(advanced encryption standard)encryption IP core connected by Wishbone bus was designed and the AES function component was developed based on Tiny OS.The software and hardware simulation on a FPGA was run.Results show that this design succeeds in running the NesC application program with call of AES accelerator functions.The correctness of the scheme is verified