From 9feaa99511c29ae3f11ea29040e8e60bbf3d619e Mon Sep 17 00:00:00 2001
From: Marcus Nowotny <marcus@interactive-matter.eu>
Date: Wed, 31 Oct 2012 11:57:03 +0100
Subject: [PATCH 1/2] adding some delay routines to pause the metro

---
 Metro.cpp    | 16 +++++++++++++---
 Metro.h      |  6 +++---
 README.md    |  8 ++++++++
 keywords.txt |  2 ++
 4 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/Metro.cpp b/Metro.cpp
index 31816e3..86bcdac 100755
--- a/Metro.cpp
+++ b/Metro.cpp
@@ -25,7 +25,7 @@ Metro::Metro(unsigned long interval_millis)
 
 Metro::Metro(unsigned long interval_millis, uint8_t autoreset)
 {   
-	this->autoreset = autoreset; 
+	this->autoreset = autoreset;
 	interval(interval_millis);
 	reset();
 }
@@ -35,6 +35,14 @@ void Metro::interval(unsigned long interval_millis)
   this->interval_millis = interval_millis;
 }
 
+void Metro::delay(unsigned long delay_millis) {
+    this->previous_millis += delay_millis;
+}
+
+void Metro::delayFromNow(unsigned long delay_millis) {
+    this->previous_millis = millis()+delay_millis;
+}
+
 // Benjamin.soelberg's check behavior:
 // When a check is true, add the interval to the internal counter.
 // This should guarantee a better overall stability.
@@ -45,7 +53,9 @@ void Metro::interval(unsigned long interval_millis)
 
 char Metro::check()
 {
-  if (millis() - this->previous_millis >= this->interval_millis) {
+  unsigned long now_millis = millis();
+  if (this->previous_millis<now_millis
+      &&(now_millis - this->previous_millis >= this->interval_millis)) {
     // As suggested by benjamin.soelberg@gmail.com, the following line 
     // this->previous_millis = millis();
     // was changed to
@@ -53,7 +63,7 @@ char Metro::check()
     
     // If the interval is set to 0 we revert to the original behavior
     if (this->interval_millis <= 0 || this->autoreset ) {
-    	this->previous_millis = millis();
+    	this->previous_millis = now_millis;
 	} else {
 		this->previous_millis += this->interval_millis; 
 	}
diff --git a/Metro.h b/Metro.h
index 4e1b446..7e9fe39 100755
--- a/Metro.h
+++ b/Metro.h
@@ -1,6 +1,4 @@
-/*
-For license and instructions, please read Readme.md.
-*/
+
 
 #ifndef Metro_h
 #define Metro_h
@@ -14,6 +12,8 @@ class Metro
   Metro(unsigned long interval_millis);
   Metro(unsigned long interval_millis, uint8_t autoreset);
   void interval(unsigned long interval_millis);
+  void delay(unsigned long delay_millis);
+  void delayFromNow(unsigned long delay_millis);
   char check();
   void reset();
 	
diff --git a/README.md b/README.md
index 7bde615..798b3f6 100644
--- a/README.md
+++ b/README.md
@@ -58,3 +58,11 @@ Changes the interval in milliseconds.
 
 Restarts/resets the Metro.
 
+# void delay(long millis)
+
+delays the triggering of the next successful check() for the specified amount of milliseconds. 
+
+# void delayFromNow(long millis)
+
+delays the triggering of the next successful check() for the specified amount of milliseconds after now.
+After millis() + the specified milliseconds the Metro goes back to normal operation 
diff --git a/keywords.txt b/keywords.txt
index 62ca8a2..4c384e7 100755
--- a/keywords.txt
+++ b/keywords.txt
@@ -14,6 +14,8 @@ Metro	KEYWORD1
 
 check	KEYWORD2
 interval	KEYWORD2
+delay KEYWORD2
+delayFromNow KEYWORD2
 
 #######################################
 # Instances (KEYWORD2)

From 0c3f3f200e624ddd6f09f88021dc125ee9b946f2 Mon Sep 17 00:00:00 2001
From: Marcus Nowotny <marcus@interactive-matter.eu>
Date: Wed, 31 Oct 2012 12:01:41 +0100
Subject: [PATCH 2/2] thou shalt not delete header infos

---
 Metro.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Metro.h b/Metro.h
index 7e9fe39..3d6152e 100755
--- a/Metro.h
+++ b/Metro.h
@@ -1,4 +1,6 @@
-
+/*
+ For license and instructions, please read Readme.md.
+ */
 
 #ifndef Metro_h
 #define Metro_h