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Circular buffer by LQd

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Author: Pavol alias LQd

Last Updated: 2016-02-25

Package Version: 1.0.0.0

Category: Storage

Downloaded: 655 times

Followed by: 1 user

License: MIT license

Simple ready to use implementation of FirstIn-FrstOut type buffer for general use. Size can be easily adjusted as well as type of stored data. Current depth signalization available. Perfect for interrupt-driven receiving...
Written in mB for AVR but no AVR speciffics used, just pure basic.

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DOWNLOAD LINK	RELATED COMPILER	CONTAINS
1362849985_circular_buffer__mikrobasic_other.zip [2.93KB]		lib src exa hlp hex sch pcb doc

Library Blog

This is, how it works: ( number is element, | | is empty slot)

4 ->| | | | 3 | 2 | 1 |

| | | 4 | 3 | 2 | 1 |

| | | | 4 | 3 | 2 | ->1

Input accepts data, which can be then collected from output at the same sequence as inserted assuming that buffer can store defined maximum of elements (full buffer will reject elements, no overwriting). Algorithm cares about "recycling" buffer slots and no physical shifting of elements is used, so it is quite effective even for buffer consisting of thousands of elements (it does not matter), it is like a ring, it has no start and no end.

More here: http://en.wikipedia.org/wiki/Circular_buffer

This lib is set for 251 byte buffer of bytes to keep it fast (no other variables than bytes used) but could be very easily changed to other data types and numbers of elements.

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