mbed_example
Event class example to manually instantiate, configure and post events.
Revision 0:86c4bf2d90fa, committed 2017-11-30
- Comitter:
- deepikabhavnani
- Date:
- Thu Nov 30 21:50:58 2017 +0000
- Commit message:
- Initial Draft
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Thu Nov 30 21:50:58 2017 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Nov 30 21:50:58 2017 +0000
@@ -0,0 +1,38 @@
+#include "mbed.h"
+// Creates an event bound to the specified event queue
+EventQueue queue;
+void handler(int count);
+Event<void(int)> event(&queue, handler);
+
+void handler(int count) {
+ printf("Event = %d \n", count);
+ return;
+}
+
+void post_events(void) {
+
+ // Events can be posted multiple times and enqueue gracefully until
+ // the dispatch function is called.
+ event.post(1);
+ event.post(2);
+ event.post(3);
+}
+
+int main() {
+
+ Thread event_thread;
+
+ // The event can be manually configured for special timing requirements
+ // specified in milliseconds
+ event.delay(100); // Starting delay - 100 msec
+ event.period(200); // Delay between each evet - 200msec
+
+ event_thread.start(callback(post_events));
+
+ // Posted events are dispatched in the context of the queue's
+ // dispatch function
+ queue.dispatch(400); // Dispatch time - 400msec
+ // 400 msec - Only 2 set of events will be dispatched as period is 200 msec
+
+ event_thread.join();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Thu Nov 30 21:50:58 2017 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#182bbd51bc8d1b6217477c2b5de3f1d0c5e6249f