μC/OS-Ⅱ is an open source real-time kernel adopting priority preemptive schedule strategy. Aiming at the problem of μC/OS-Ⅱ failing to support homology priority tasks scheduling, an approach for solution is propos...μC/OS-Ⅱ is an open source real-time kernel adopting priority preemptive schedule strategy. Aiming at the problem of μC/OS-Ⅱ failing to support homology priority tasks scheduling, an approach for solution is proposed. The basic idea is adding round-robin scheduling strategy in its original scheduler in order to schedule homology priority tasks through time slice roundrobin. Implementation approach is given in detail. Firstly, the Task Control Block （TCB） is extended. And then, a new priority index table is created, in which each index pointer points to a set of homology priority tasks. Eventually, on the basis of reconstructing μC/OS-Ⅱ real-time kernel, task scheduling module is rewritten. Otherwise, schedulability of homology task supported by modified kernel had been analyzed, and deadline formula of created homology tasks is given. By theoretical analysis and experiment verification, the modified kernel can support homology priority tasks scheduling, meanwhile, it also remains preemptive property of original μC/OS-Ⅱ.展开更多
论述了一种基于FPGA和实时操作系统microC/OS-Ⅱ、适用于核物理数据检测和实验控制的片上可编程系统SOPC(System On a Programmable Chip)的设计,并在altera-stratix-Ⅱ2S60f1020c3芯片内获得实现。该片上可编程系统的硬件处理器和实时...论述了一种基于FPGA和实时操作系统microC/OS-Ⅱ、适用于核物理数据检测和实验控制的片上可编程系统SOPC(System On a Programmable Chip)的设计,并在altera-stratix-Ⅱ2S60f1020c3芯片内获得实现。该片上可编程系统的硬件处理器和实时操作系统都可根据需求裁剪、重配置。展开更多
基金Supported by the "Chunhui" Plan of Ministry of Education of China (Z2005-2-11013)
文摘μC/OS-Ⅱ is an open source real-time kernel adopting priority preemptive schedule strategy. Aiming at the problem of μC/OS-Ⅱ failing to support homology priority tasks scheduling, an approach for solution is proposed. The basic idea is adding round-robin scheduling strategy in its original scheduler in order to schedule homology priority tasks through time slice roundrobin. Implementation approach is given in detail. Firstly, the Task Control Block （TCB） is extended. And then, a new priority index table is created, in which each index pointer points to a set of homology priority tasks. Eventually, on the basis of reconstructing μC/OS-Ⅱ real-time kernel, task scheduling module is rewritten. Otherwise, schedulability of homology task supported by modified kernel had been analyzed, and deadline formula of created homology tasks is given. By theoretical analysis and experiment verification, the modified kernel can support homology priority tasks scheduling, meanwhile, it also remains preemptive property of original μC/OS-Ⅱ.
文摘论述了一种基于FPGA和实时操作系统microC/OS-Ⅱ、适用于核物理数据检测和实验控制的片上可编程系统SOPC(System On a Programmable Chip)的设计,并在altera-stratix-Ⅱ2S60f1020c3芯片内获得实现。该片上可编程系统的硬件处理器和实时操作系统都可根据需求裁剪、重配置。
