Ciao a tutti ho un piccolo problemino di codice:
ho acquistato la scheda rfid rc522, collegata, provata con la libreria "rfid-master" e usando gli esempi riesco a leggere sulla seriale il codice della carta e del tag venduti con la scheda.
Come faccio a salvare in una variabile il codice che viene mostrato sul monitor seriale?
Mi sto perdendo in un bicchiere d'acqua, lo immagino....
Ecco il codice:
/*
- MFRC522 - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
- The library file MFRC522.h has a wealth of useful info. Please read it.
- The functions are documented in MFRC522.cpp.
- Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
- Created by Miguel Balboa (circuitito.com), Jan, 2012.
- Rewritten by Søren Thing Andersen (access.thing.dk), fall of 2013 (Translation to English, refactored, comments, anti collision, cascade levels.)
- Released into the public domain.
- This sample shows how to setup a block on a MIFARE Classic PICC to be in "Value Block" mode.
- In Value Block mode the operations Increment/Decrement/Restore and Transfer can be used.
----------------------------------------------------------------------------- empty_skull
Aggiunti pin per arduino Mega
Scritto semplice codice per la scrittura e lettura
add pin configuration for arduino mega
write simple read/write Code for new entry user
http://mac86project.altervista.org/
----------------------------------------------------------------------------- Nicola Coppola
- Pin layout should be as follows:
- Signal Pin Pin Pin
- Arduino Uno Arduino Mega MFRC522 board
- Reset 9 5 RST
- SPI SS 10 53 SDA
- SPI MOSI 11 51 MOSI
- SPI MISO 12 50 MISO
- SPI SCK 13 52 SCK
- The reader can be found on eBay for around 5 dollars. Search for "mf-rc522" on ebay.com.
*/#include <SPI.h>
#include <MFRC522.h>#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.void setup() {
Serial.begin(9600); // Initialize serial communications with the PC
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522 card
//Serial.println("Scan a MIFARE Classic PICC to demonstrate Value Blocks.");
}void loop() {
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent()) {
return;
}// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial()) {
return;
}
// Now a card is selected. The UID and SAK is in mfrc522.uid.// Dump UID
Serial.print("Card UID:");
for (byte i = 0; i < mfrc522.uid.size; i++) {
Serial.print(mfrc522.uid.uidByte < 0x10 ? " 0" : " ");
_ Serial.print(mfrc522.uid.uidByte*, HEX);_
_ }*_
_ Serial.println();_}
[/quote]
e quello che ricevo sulla seriale è:
Card UID: A9 80 D5 B5
quindi direi che il tutto funziona.
Grazie