From 2f57235c875570bb173f62ce8badb93c90ff2d7a Mon Sep 17 00:00:00 2001
From: gpancot <gpancot@hotmail.com>
Date: Sat, 9 Apr 2016 19:00:12 +0200
Subject: [PATCH] Added files via upload

avoid spourious interrupt
---
 examples/MinimalInterrupt/MinimalInterrupt.ino | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/examples/MinimalInterrupt/MinimalInterrupt.ino b/examples/MinimalInterrupt/MinimalInterrupt.ino
index 480fe0a..38ff9eb 100644
--- a/examples/MinimalInterrupt/MinimalInterrupt.ino
+++ b/examples/MinimalInterrupt/MinimalInterrupt.ino
@@ -30,7 +30,7 @@
 #include <MFRC522.h>
 
 #define RST_PIN         9           // Configurable, see typical pin layout above
-#define SS_PIN          3           // Configurable, see typical pin layout above
+#define SS_PIN         10           // Configurable, see typical pin layout above
 #define IRQ_PIN         2           
 
 MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instance.
@@ -71,13 +71,13 @@ void setup() {
 
     /*Activate the interrupt*/
     attachInterrupt(digitalPinToInterrupt(IRQ_PIN), readCard, FALLING);
-
-    Serial.println("End setup"); 
-
+    
     do{ //clear a spourious interrupt at start
       ;
     }while(!bNewInt);
     bNewInt = false;
+
+    Serial.println("End setup"); 
 }
 
 /**
@@ -86,7 +86,6 @@ void setup() {
 void loop() {
    
    if(bNewInt){  //new read interrupt
-      bNewInt = false;
       Serial.print("Interrupt. ");
       mfrc522.PICC_ReadCardSerial(); //read the tag data
       // Show some details of the PICC (that is: the tag/card)
@@ -95,6 +94,8 @@ void loop() {
       Serial.println();
      
       clearInt(mfrc522);
+      mfrc522.PICC_HaltA();
+      bNewInt = false;
    }
 
 // The receiving block needs regular retriggering (tell the tag it should transmit??)
@@ -135,3 +136,4 @@ void clearInt(MFRC522 mfrc522){
    mfrc522.PCD_WriteRegister(mfrc522.ComIrqReg,0x7F);
 }
 
+