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- // Type agnostic / generic type FIFO queue and ring buffer implementations
- // Programmed in Visual Studio 2015 using Beckhoff TwinCAT development environment
- ////////////////////// Usage Sample ///////////////////
- // DUTs
- TYPE ST_Test :
- STRUCT
- iTest : INT;
- fTest : REAL;
- END_STRUCT
- END_TYPE
- // MAIN
- // Header / declarations
- PROGRAM MAIN
- VAR
- // FIFO queue declaration
- fbFifoQueue : FB_FifoQueue;
-
- // test bit toggles
- enqueue : BOOL;
- dequeue : BOOL;
-
- // queue data array
- test_queue : ARRAY[0..4] OF ST_Test;
-
- // item loaded to queue
- item_enqueue : ST_Test;
-
- // item retrieved from queue
- item_dequeue : ST_Test;
-
- END_VAR
- // BODY
- // instantiate FIFO queue
- fbFifoQueue(ptrArrData:= ADR(test_queue), Length:=5, Ring:=FALSE);
- IF enqueue THEN
- // load struct with dummy data
- item_enqueue.iTest := item_enqueue.iTest + 1;
- item_enqueue.fTest := item_enqueue.fTest + 0.1;
-
- // enqueue item
- fbFifoQueue.Enqueue(item_enqueue);
-
- enqueue := FALSE;
- END_IF
- IF dequeue THEN
- // dequeue item
- fbFifoQueue.Dequeue(ADR(item_dequeue));
-
- dequeue := FALSE;
- END_IF
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codesys-fifo-master.zip
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