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Author: avandalen

avdweb_VirtualDelay.ino

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+/*
+Copyright (C) 2016  Albert van Dalen http://www.avdweb.nl
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License at http://www.gnu.org/licenses .
+
+Version 10-1-2016
+Version 6-9-2017 elapsed(), added start()
+Version 19-9-2017 DO_ONCE without class
+Version 19-9-2017 fix rollover bug
+
+start         _____|_____________________
+                    __________
+running       _____|          |__________
+
+elapsed()     ________________|__________
+
+set timeOut   _____|_____________________      
+
+*/
+
+#include <Arduino.h>
+#include "avdweb_VirtualDelay.h"
+
+VirtualDelay::VirtualDelay(unsigned long (*timerFunctionPtr)()):
+timerFunctionPtr(timerFunctionPtr)
+{ 
+}
+
+void VirtualDelay::start(signed long delay) // 0...2^31
+{ if(!running)
+  { running = 1;
+    timeOut = (*timerFunctionPtr)() + abs(delay);
+  }
+}
+
+bool VirtualDelay::elapsed() 
+{ bool pulse = 0;
+  if(running)
+  { //if((signed long)(*timerFunctionPtr)() >= timeOut) // bug, not equal to:
+    if((signed long)((*timerFunctionPtr)() - timeOut) >= 0) // fix rollover bug: https://arduino.stackexchange.com/questions/12587/how-can-i-handle-the-millis-rollover/12588#12588
+    { running = 0;
+      pulse = 1; // return 1 just one time  
+    }      
+  }
+  return pulse; 
+}
+
+
+
+
+
+
+

keywords.txt

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+#######################################
+# Syntax Coloring Map For avdweb_VirtualDelay
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+avdweb_VirtualDelay	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+start	KEYWORD2
+elapsed	KEYWORD2
+
+#######################################
+# Instances (KEYWORD2)
+#######################################
+
+running KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+

library.properties

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+name=avdweb_VirtualDelay
+version=19.9.2017
+author=Albert van Dalen
+maintainer=Albert van Dalen <[email protected]>
+sentence=Allows using (multiple) delays without blocking code execution. Arduino Uno and Zero.
+paragraph=During the delay, the code execution is continued. We can use multiple delays simultaneously and independent of each other.
+category=Timing
+url=https://github.com/avandalen/VirtualDelay
+architectures=atmelavr, atmelsam
+