Small Arduino library to deal with a FIFO queue (First in , First Out).
The library is rather compact but has the main functionalities of a fifo (ie: enqueue and dequeue). Each item of the queue has 2 fields (int and string).
I use it associated to an I2C bus receiver: the queue stores the received messages until they are processed.
Example:
---FxxxxL----
F = First item
L = Last item
See the given file: example.ino
These values can be adjusted in the header file, in order to fit your needs.
MAX_QUEUE_SIZE
MAX_DATA_SIZE
ArrayQueue::ArrayQueue()Object constructor.
void ArrayQueue::enQueue(int element, char* text)Add a item in the FIFO queue (the Last item). The item has two fields (element and text) . When MAX_QUEUE_SIZE is reached, the queue is full and the new items are ignored.
Examples:
xL---------
--FxxxxL---
xL----Fxxxx
int ArrayQueue::deQueue()Read an item of the Queue. The item is also removed from the Queue. Returns -1 if the Queue is empty.
int ArrayQueue::getFirst()Returns the first item of the FIFO, but without removing it. Returns -1 if the Queue is empty.
int ArrayQueue::getSize()Returns the number of items in the Queue.
bool ArrayQueue::isEmpty()Returns TRUE if the Queue is empty.
String ArrayQueue::getData(int index)Returns the second field of the poped item