From a8c54f2688fcd54f290749dd13843ea199638d89 Mon Sep 17 00:00:00 2001
From: Martin-Laclaustra <martin.laclaustra@gmail.com>
Date: Sun, 30 Apr 2017 19:18:45 +0200
Subject: [PATCH] Start always with a timing that has a low signal

Deliver 499 or 500 samples, ensuring that the first one is always low level.
---
 htdocs/Sketchbook/SimpleRcScanner.ino | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/htdocs/Sketchbook/SimpleRcScanner.ino b/htdocs/Sketchbook/SimpleRcScanner.ino
index 9e52351..165493b 100644
--- a/htdocs/Sketchbook/SimpleRcScanner.ino
+++ b/htdocs/Sketchbook/SimpleRcScanner.ino
@@ -5,9 +5,11 @@ static unsigned int timings[SAMPLESIZE];
 static unsigned int pos = 0;
 static unsigned long lastTime = 0;
 
+static int receiverPin = 2;
 static int interruptPin = 0;
 
 void setup() {
+  interruptPin = digitalPinToInterrupt(receiverPin);
   Serial.begin(9600); 
   attachInterrupt(interruptPin, handleInterrupt, CHANGE);
   pinMode(13, OUTPUT);
@@ -26,10 +28,12 @@ void loop() {
     Serial.println();
       
     detachInterrupt(interruptPin);
+  
+    int finalstate = digitalRead(receiverPin);
     
     char s = Serial.read();
     
-    for (unsigned int i = pos; i< SAMPLESIZE; i++) {
+    for (unsigned int i = pos + finalstate; i< SAMPLESIZE; i++) {
       Serial.print( timings[i] );
       Serial.print(",");
     }