Hi guys,
I hope that you'll be able to help me.
I made two differents prototypes using one arduino Uno. One with one RFID reader, one with three different RFID readers. They are both working fine.
So I want now to move forward on a new prototype, with 9 differents RFID readers (type RC522) on a arduino mega, I've updated my script (based on GitHub - miguelbalboa/rfid: Arduino RFID Library for MFRC522).
But I've got the issue for every readers :
Firmware Version: 0x0 = (unknown)
WARNING: Communication failure, is the MFRC522 properly connected?
This is my code.
/**
* --------------------------------------------------------------------------------------------------------------------
* Example sketch/program showing how to read data from more than one PICC to serial.
* --------------------------------------------------------------------------------------------------------------------
* This is a MFRC522 library example; for further details and other examples see: https://github.com/miguelbalboa/rfid
*
* Example sketch/program showing how to read data from more than one PICC (that is: a RFID Tag or Card) using a
* MFRC522 based RFID Reader on the Arduino SPI interface.
*
* Warning: This may not work! Multiple devices at one SPI are difficult and cause many trouble!! Engineering skill
* and knowledge are required!
*
* @license Released into the public domain.
*
* Typical pin layout used:
* -----------------------------------------------------------------------------------------
* 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 1 SDA(SS) ** custom, take a unused pin, only HIGH/LOW required **
* SPI SS 2 SDA(SS) ** custom, take a unused pin, only HIGH/LOW required **
* 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 5 // Configurable, see typical pin layout above
#define SS_1_PIN 30 // Configurable, take a unused pin, only HIGH/LOW required, must be diffrent to SS 2
#define SS_2_PIN 32 // Configurable, take a unused pin, only HIGH/LOW required, must be diffrent to SS 1
#define SS_3_PIN 34
#define SS_4_PIN 36
#define SS_5_PIN 38
#define SS_6_PIN 40
#define SS_7_PIN 42
#define SS_8_PIN 44
#define SS_9_PIN 46
#define NR_OF_READERS 9
byte ssPins[] = {SS_1_PIN, SS_2_PIN, SS_3_PIN,SS_4_PIN, SS_5_PIN, SS_6_PIN,SS_7_PIN, SS_8_PIN, SS_9_PIN};
MFRC522 mfrc522[NR_OF_READERS]; // Create MFRC522 instance.
/**
* Initialize.
*/
void setup() {
Serial.begin(9600); // Initialize serial communications with the PC
while (!Serial); // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
SPI.begin(); // Init SPI bus
for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
mfrc522[reader].PCD_Init(ssPins[reader], RST_PIN); // Init each MFRC522 card
//Serial.print(F("Lecteur "));
//Serial.print(reader);
//Serial.print(F(": "));
mfrc522[reader].PCD_DumpVersionToSerial();
}
}
/**
* Main loop.
*/
void loop() {
for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
// Look for new cards
if (mfrc522[reader].PICC_IsNewCardPresent() && mfrc522[reader].PICC_ReadCardSerial()) {
//Serial.print(F("Lecteur "));
Serial.print(reader);
Serial.print(F(";"));
// Show some details of the PICC (that is: the tag/card)
//Serial.print(F(": ID de la carte:"));
dump_byte_array(mfrc522[reader].uid.uidByte, mfrc522[reader].uid.size);
Serial.println();
//Serial.print(F("Type PICC: "));
//MFRC522::PICC_Type piccType = mfrc522[reader].PICC_GetType(mfrc522[reader].uid.sak);
//Serial.println(mfrc522[reader].PICC_GetTypeName(piccType));
// Halt PICC
mfrc522[reader].PICC_HaltA();
// Stop encryption on PCD
mfrc522[reader].PCD_StopCrypto1();
} //if (mfrc522[reader].PICC_IsNewC
} //for(uint8_t reader
}
/**
* Helper routine to dump a byte array as hex values to Serial.
*/
void dump_byte_array(byte *buffer, byte bufferSize) {
for (byte i = 0; i < bufferSize; i++) {
//Serial.print(buffer[i] < 0x10 ? " 0" : " ");
Serial.print(buffer[i] < 0x10 ? "0" : "");
Serial.print(buffer[i], HEX);
}
}
It seems to be pretty basic stuff but I can't figure out how to make it work.
Someone have any advices?