From 8bfb620e421b4a74a7144a81d2878d502856dc4b Mon Sep 17 00:00:00 2001
From: Henri de Jong <henridejong@gmail.com>
Date: Sun, 27 Jan 2013 18:11:28 +0100
Subject: [PATCH] Added extra example to show serial on lcd display

---
 examples/cardDisplay/cardDisplay.ino | 126 +++++++++++++++++++++++++++
 examples/cardRead/cardRead.ino       |   6 +-
 2 files changed, 130 insertions(+), 2 deletions(-)
 create mode 100644 examples/cardDisplay/cardDisplay.ino

diff --git a/examples/cardDisplay/cardDisplay.ino b/examples/cardDisplay/cardDisplay.ino
new file mode 100644
index 0000000..7fb22f3
--- /dev/null
+++ b/examples/cardDisplay/cardDisplay.ino
@@ -0,0 +1,126 @@
+/**
+* Read a card using a mfrc522 reader on your SPI interface
+* Pin layout should be as follows (on Arduino Uno):
+* MOSI: Pin 11 / ICSP-4
+* MISO: Pin 12 / ICSP-1
+* SCK: Pin 13 / ISCP-3
+* SS: Pin 10
+* RST: Pin 9
+*
+* Script is based on the script of Miguel Balboa. 
+* Serial number is shown on a HD44780 compatible display
+*
+* The circuit:
+* LCD RS pin to digital pin (7)
+* LCD Enable pin to digital pin (6)
+* LCD D4 pin to digital pin 5
+* LCD D5 pin to digital pin 4
+* LCD D6 pin to digital pin 3
+* LCD D7 pin to digital pin 2
+* LCD R/W pin to ground
+* 10K resistor:
+* ends to +5V and ground
+* wiper to LCD VO pin (pin 3)
+*
+* @version 0.1
+* @author Henri de Jong
+* @since 27-01-2013
+*/
+
+#include <SPI.h>
+#include <RFID.h>
+#include <LiquidCrystal.h>
+
+#define SS_PIN 10
+#define RST_PIN 9
+
+RFID rfid(SS_PIN, RST_PIN); 
+
+LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
+
+// Setup variables:
+    int serNum0;
+    int serNum1;
+    int serNum2;
+    int serNum3;
+    int serNum4;
+
+void setup()
+{ 
+  Serial.begin(9600);
+  lcd.begin(16, 2);
+  SPI.begin(); 
+  rfid.init();
+  
+}
+
+void loop()
+{
+    
+    if (rfid.isCard()) {
+        if (rfid.readCardSerial()) {
+            if (rfid.serNum[0] != serNum0
+                && rfid.serNum[1] != serNum1
+                && rfid.serNum[2] != serNum2
+                && rfid.serNum[3] != serNum3
+                && rfid.serNum[4] != serNum4
+            ) {
+                /* With a new cardnumber, show it. */
+                Serial.println(" ");
+                Serial.println("Card found");
+                serNum0 = rfid.serNum[0];
+                serNum1 = rfid.serNum[1];
+                serNum2 = rfid.serNum[2];
+                serNum3 = rfid.serNum[3];
+                serNum4 = rfid.serNum[4];
+               
+                //Serial.println(" ");
+                Serial.println("Cardnumber:");
+                Serial.print("Dec: ");
+		Serial.print(rfid.serNum[0],DEC);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[1],DEC);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[2],DEC);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[3],DEC);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[4],DEC);
+                Serial.println(" ");
+                        
+                Serial.print("Hex: ");
+		Serial.print(rfid.serNum[0],HEX);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[1],HEX);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[2],HEX);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[3],HEX);
+                Serial.print(", ");
+		Serial.print(rfid.serNum[4],HEX);
+                Serial.println(" ");
+
+                /* Write the HEX code to the display */
+                lcd.clear();                
+                lcd.setCursor(0, 0);
+                lcd.print("Cardno (hex):");
+                lcd.setCursor(0,1);
+                lcd.print(rfid.serNum[0], HEX);
+                lcd.print(',');
+                lcd.print(rfid.serNum[1], HEX);
+                lcd.print(',');
+                lcd.print(rfid.serNum[2], HEX);
+                lcd.print(',');
+                lcd.print(rfid.serNum[3], HEX);
+                lcd.print(',');
+                lcd.print(rfid.serNum[4], HEX);
+             } else {
+               /* If we have the same ID, just write a dot. */
+               Serial.print(".");
+             }
+          }
+    }
+    
+    rfid.halt();
+}
+
diff --git a/examples/cardRead/cardRead.ino b/examples/cardRead/cardRead.ino
index 3c128ac..4a53eca 100644
--- a/examples/cardRead/cardRead.ino
+++ b/examples/cardRead/cardRead.ino
@@ -5,7 +5,7 @@
 * MISO: Pin 12 / ICSP-1
 * SCK: Pin 13 / ISCP-3
 * SS: Pin 10
-* RST: Pin 5
+* RST: Pin 9
 *
 * Script is based on the script of Miguel Balboa. 
 * New cardnumber is printed when card has changed. Only a dot is printed
@@ -20,7 +20,7 @@
 #include <RFID.h>
 
 #define SS_PIN 10
-#define RST_PIN 5
+#define RST_PIN 9
 
 RFID rfid(SS_PIN, RST_PIN); 
 
@@ -50,6 +50,7 @@ void loop()
                 && rfid.serNum[3] != serNum3
                 && rfid.serNum[4] != serNum4
             ) {
+                /* With a new cardnumber, show it. */
                 Serial.println(" ");
                 Serial.println("Card found");
                 serNum0 = rfid.serNum[0];
@@ -84,6 +85,7 @@ void loop()
 		Serial.print(rfid.serNum[4],HEX);
                 Serial.println(" ");
              } else {
+               /* If we have the same ID, just write a dot. */
                Serial.print(".");
              }
           }