A FIFO Buffer Implementation
A FIFO buffer is a useful way of storing data that arrives to a microcontroller peripheral asynchronously but cannot be read immediately. One example is storing bytes incoming on a UART. Buffering the bytes eases the real-time requirements for the embedded firmware. A FIFO buffer stores data on a first-in, first-out basis. The storage structure is typically an array of contiguous memory. Data is written to the “head” of the buffer and read from the “tail”.
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