说明：  软件模拟FIFO队列，实现了队列的初始化，读写操作以及查看队列占用情况和可用空间情况。uCOS下测试通过，其中的数据类型定义没有添加，请使用者按照芯片自行定义。
(FIFO queue simulation software to achieve the initialization of the queue, read and write operations, and view the queue occupancy and available space situation. uCOS under test, where the data type definition is not added, please follow their own user-defined chip.)