Created rfid_read_personal_data.ino (#304)

* Create rfid_read_personal_data.ino
* Sample code to read personal data that was written by "rfid_write_personal_data.ino" in "examples".
* Add new example to .travis.yml

.travis.yml

@@ -24,6 +24,7 @@ env:
     - PLATFORMIO_CI_SRC=examples/ReadNUID/ReadNUID.ino TESTBOARD=arduino_avr,arduino_arm,teensy,esp
     - PLATFORMIO_CI_SRC=examples/AccessControl/AccessControl.ino TESTBOARD=arduino_avr,teensy
     - PLATFORMIO_CI_SRC=examples/RFID-Cloner/RFID-Cloner.ino TESTBOARD=arduino_avr,arduino_arm,teensy,esp
+    - PLATFORMIO_CI_SRC=examples/rfid_read_personal_data/rfid_read_personal_data.ino TESTBOARD=arduino_avr,arduino_arm,teensy,esp
 
 install:
     - pip install -U platformio

examples/rfid_read_personal_data/rfid_read_personal_data.ino

@@ -0,0 +1,140 @@
+/*
+   Initial Author: ryand1011 (https://github.com/ryand1011)
+  
+   Reads data written by a program such as "rfid_write_personal_data.ino"
+
+   See: https://github.com/miguelbalboa/rfid/tree/master/examples/rfid_write_personal_data
+
+   Uses MIFARE RFID card using RFID-RC522 reader
+   Uses MFRC522 - Library
+   -----------------------------------------------------------------------------------------
+               MFRC522      Arduino       Arduino   Arduino    Arduino          Arduino
+               Reader/PCD   Uno/101       Mega      Nano v3    Leonardo/Micro   Pro Micro
+   Signal      Pin          Pin           Pin       Pin        Pin              Pin
+   -----------------------------------------------------------------------------------------
+   RST/Reset   RST          9             5         D9         RESET/ICSP-5     RST
+   SPI SS      SDA(SS)      10            53        D10        10               10
+   SPI MOSI    MOSI         11 / ICSP-4   51        D11        ICSP-4           16
+   SPI MISO    MISO         12 / ICSP-1   50        D12        ICSP-1           14
+   SPI SCK     SCK          13 / ICSP-3   52        D13        ICSP-3           15
+
+*/
+
+#include <SPI.h>
+#include <MFRC522.h>
+
+#define RST_PIN 9 // Configurable, see typical pin layout above
+#define SS_PIN 10 // Configurable, see typical pin layout above
+
+MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 object 'card'
+
+//*****************************************************************************************//
+void setup() {
+  Serial.begin(9600);                                           // Initialize serial communications with the PC
+  SPI.begin();                                                  // Init SPI bus
+  mfrc522.PCD_Init();                                              // Init MFRC522 card
+  Serial.println(F("Read personal data on a MIFARE PICC:"));    //shows in serial that it is ready to read
+}
+
+//*****************************************************************************************//
+void loop() {
+
+  // Prepare key - all keys are set to FFFFFFFFFFFFh at chip delivery from the factory.
+  MFRC522::MIFARE_Key key;
+  for (byte i = 0; i < 6; i++) key.keyByte[i] = 0xFF;
+
+  //some variables we need
+  byte block;
+  byte len;
+  MFRC522::StatusCode status;
+
+  //-------------------------------------------
+
+  //look for card
+  if ( ! mfrc522.PICC_IsNewCardPresent()) {
+    return;
+  }
+
+  //select a card
+  if ( ! mfrc522.PICC_ReadCardSerial()) {
+    return;
+  }
+
+  Serial.println(F("**Card Detected:**"));
+
+  //-------------------------------------------
+
+  mfrc522.PICC_DumpDetailsToSerial(&(mfrc522.uid)); //dump some details about the card
+
+  //mfrc522.PICC_DumpToSerial(&(mfrc522.uid));      //uncomment this to see all blocks in hex
+
+  //-------------------------------------------
+
+  Serial.print("Name: ");
+
+  byte buffer1[18];
+
+  block = 4;
+  len = 18;
+
+  //------------------------------------------- GET FIRST NAME
+  status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, 4, &key, &(mfrc522.uid)); //line 834 of MFRC522.cpp file
+  if (status != MFRC522::STATUS_OK) {
+    Serial.print(F("Authentication failed: "));
+    Serial.println(mfrc522.GetStatusCodeName(status));
+    return;
+  }
+
+  status = mfrc522.MIFARE_Read(block, buffer1, &len);
+  if (status != MFRC522::STATUS_OK) {
+    Serial.print(F("Reading failed: "));
+    Serial.println(mfrc522.GetStatusCodeName(status));
+    return;
+  }
+
+  //PRINT FIRST NAME
+  for (uint8_t i = 0; i < 16; i++)
+  {
+    if (buffer1[i] != 32)
+    {
+      Serial.write(buffer1[i]);
+    }
+  }
+  Serial.print(" ");
+
+  //---------------------------------------- GET LAST NAME
+
+  byte buffer2[18];
+  block = 1;
+
+  status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, 1, &key, &(mfrc522.uid)); //line 834
+  if (status != MFRC522::STATUS_OK) {
+    Serial.print(F("Authentication failed: "));
+    Serial.println(mfrc522.GetStatusCodeName(status));
+    return;
+  }
+
+  status = mfrc522.MIFARE_Read(block, buffer2, &len);
+  if (status != MFRC522::STATUS_OK) {
+    Serial.print(F("Reading failed: "));
+    Serial.println(mfrc522.GetStatusCodeName(status));
+    return;
+  }
+
+  //PRINT LAST NAME
+  for (uint8_t i = 0; i < 16; i++)
+  {
+    Serial.write(buffer2[i] );
+  }
+
+
+  //----------------------------------------
+
+  Serial.println(F("\n**End Reading**\n"));
+
+  delay(1000); //change value if you want to read cards faster
+
+  mfrc522.PICC_HaltA();
+  mfrc522.PCD_StopCrypto1();
+}
+//*****************************************************************************************//