博创UP-NETARM2410-S实验箱源码：Exp3 DA接口实验-Fiberxon UP-NETARM2410-S experimental box source: Exp3 DA Interface Experiment

uc/os-2 实现五个哲学家的就餐问题 任务调度，使用信号量集实现任务间通信-uc/os-2 achieve five dining philosophers problem of task scheduling, using the signal magnitude to achieve inter-task communication