Added protothread arduino library

arduino/libs/ArduinoThread/Thread.h

@@ -0,0 +1,89 @@
+/*
+ 	Thread.h - An runnable object
+
+	Thread is responsable for holding the "action" for something,
+	also, it responds if it "should" or "should not" run, based on
+	the current time;
+
+	For instructions, go to https://github.com/ivanseidel/ArduinoThread
+
+	Created by Ivan Seidel Gomes, March, 2013.
+	Released into the public domain.
+*/
+
+#ifndef Thread_h
+#define Thread_h
+
+#if defined(ARDUINO) && ARDUINO >= 100
+	#include <Arduino.h>
+#else
+	#include <WProgram.h>
+#endif
+
+#include <inttypes.h>
+
+/*
+	Uncomment this line to enable ThreadName Strings.
+
+	It might be usefull if you are loging thread with Serial,
+	or displaying a list of threads...
+*/
+// #define USE_THREAD_NAMES	1
+
+class Thread{
+protected:
+	// Desired interval between runs
+	unsigned long interval;
+
+	// Last runned time in Ms
+	unsigned long last_run;
+
+	// Scheduled run in Ms (MUST BE CACHED)	
+	unsigned long _cached_next_run;
+
+	/*
+		IMPORTANT! Run after all calls to run()
+		Updates last_run and cache next run.
+		NOTE: This MUST be called if extending
+		this class and implementing run() method
+	*/
+	void runned(unsigned long time);
+
+	// Default is to mark it runned "now"
+	void runned() { runned(millis()); }
+
+	// Callback for run() if not implemented
+	void (*_onRun)(void);		
+
+public:
+
+	// If the current Thread is enabled or not
+	bool enabled;
+
+	// ID of the Thread (initialized from memory adr.)
+	int ThreadID;
+
+	#ifdef USE_THREAD_NAMES
+		// Thread Name (used for better UI).
+		String ThreadName;			
+	#endif
+
+	Thread(void (*callback)(void) = NULL, unsigned long _interval = 0);
+
+	// Set the desired interval for calls, and update _cached_next_run
+	virtual void setInterval(unsigned long _interval);
+
+	// Return if the Thread should be runned or not
+	virtual bool shouldRun(unsigned long time);
+
+	// Default is to check whether it should run "now"
+	bool shouldRun() { return shouldRun(millis()); }
+
+	// Callback set
+	void onRun(void (*callback)(void));
+
+	// Runs Thread
+	virtual void run();
+};
+
+#endif