Hendrik Lipka / ASyncTicker

an asynchronous ticker which calls methods in a regular fashion, but not from an interrupt handler. This allows the called methods to do complex and more time-consuming stuff (e.g. network requests, calculation, or printing to the serial console)

Dependents:   IOT_Sockets

Diff: ASyncTicker.cpp

Revision:
0:13db8277ce26
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ASyncTicker.cpp	Thu Feb 24 14:06:24 2011 +0000
@@ -0,0 +1,71 @@
+/*
+ * mbed ASyncTicker library
+* Copyright (c) 2010 Hendrik Lipka
+* 
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*/
+
+
+#include "ASyncTicker.h"
+
+class TickerEntry
+{
+    public:
+        Timer timer;
+        Updateable *target;
+        int period;
+};
+
+ASyncTicker::ASyncTicker()
+{
+}
+
+void ASyncTicker::addTarget(Updateable *target, int period)
+{
+    TickerEntry *te=new TickerEntry();
+    te->target=target;
+    te->period=period;
+    _entries.push_back(te);
+}
+
+void ASyncTicker::run()
+{
+    list<TickerEntry*>::iterator it;
+    for (it=_entries.begin();it!=_entries.end();it++)
+    {
+        TickerEntry *te=*it;
+        te->timer.reset();
+        te->timer.start();
+    }
+    while (true)
+    {
+        list<TickerEntry*>::iterator it;
+        for (it=_entries.begin();it!=_entries.end();it++)
+        {
+            TickerEntry *te=*it;
+            if (te->timer.read()>te->period)
+            {
+                te->target->update();
+                te->timer.reset();
+            }
+        }
+        wait(1);
+    }
+}
+