mbed_example / Mbed OS events_ex_3

mbed events example

main.cpp@0:fca134a32b61, 2017-09-07 (annotated)

Committer:
sarahmarshy
Date:
Thu Sep 07 16:01:39 2017 +0000
Revision:
0:fca134a32b61
Initial commit;

Who changed what in which revision?

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sarahmarshy 0:fca134a32b61 1 #include "mbed_events.h"
sarahmarshy 0:fca134a32b61 2 #include <stdio.h>
sarahmarshy 0:fca134a32b61 3
sarahmarshy 0:fca134a32b61 4 /**
sarahmarshy 0:fca134a32b61 5 Event queues easily align with module boundaries, where internal state can be
sarahmarshy 0:fca134a32b61 6 implicitly synchronized through event dispatch. Multiple modules can use
sarahmarshy 0:fca134a32b61 7 independent event queues, but still be composed through the EventQueue::chain function.
sarahmarshy 0:fca134a32b61 8 **/
sarahmarshy 0:fca134a32b61 9
sarahmarshy 0:fca134a32b61 10 int main() {
sarahmarshy 0:fca134a32b61 11 // Create some event queues with pending events
sarahmarshy 0:fca134a32b61 12 EventQueue a;
sarahmarshy 0:fca134a32b61 13 a.call(printf, "hello from a!\n");
sarahmarshy 0:fca134a32b61 14
sarahmarshy 0:fca134a32b61 15 EventQueue b;
sarahmarshy 0:fca134a32b61 16 b.call(printf, "hello from b!\n");
sarahmarshy 0:fca134a32b61 17
sarahmarshy 0:fca134a32b61 18 EventQueue c;
sarahmarshy 0:fca134a32b61 19 c.call(printf, "hello from c!\n");
sarahmarshy 0:fca134a32b61 20
sarahmarshy 0:fca134a32b61 21 // Chain c and b onto a's event queue. Both c and b will be dispatched
sarahmarshy 0:fca134a32b61 22 // in the context of a's dispatch function.
sarahmarshy 0:fca134a32b61 23 c.chain(&a);
sarahmarshy 0:fca134a32b61 24 b.chain(&a);
sarahmarshy 0:fca134a32b61 25
sarahmarshy 0:fca134a32b61 26 // Dispatching a will in turn dispatch b and c, printing hello from
sarahmarshy 0:fca134a32b61 27 // all three queues
sarahmarshy 0:fca134a32b61 28 a.dispatch();
sarahmarshy 0:fca134a32b61 29 }