嵌入式系统设计方案，主要讲的是Pcanel_基于模型驱动的嵌入式系统设计平台，和基于Nios软核处理器的嵌入式系统设计-Embedded system design, mainly talking about Pcanel_ model-driven embedded system design platform, and based on the Nios soft-core processor-based embedded system design