Abstract
With the development of the Internet of Things, low-power technology has gradually become a primary factor in processor design. Processor sleeping mode is considered as an effective low-power technique. However, operation errors may occur if the long cycle instruction has not been completed during sleeping mode switch. To solve this problem, a novel sleep scheduling strategy based on RISC-V instruction set architecture is proposed. In this paper, the structure of RISC-V processor with task dispatching mechanism is described firstly. Then, WFI instruction and gating clock technology are adopted to realize the sleep scheduling strategy. Finally, hardware simulation is executed to demonstrate the feasibility of the novel sleep scheduling strategy.
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