osd-contiki/examples/osd/arduino-rfid-rc522/sketch.pde

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/*
* Sample arduino sketch using contiki features.
* We turn the LED off
* Unfortunately sleeping for long times in loop() isn't currently
* possible, something turns off the CPU (including PWM outputs) if a
* Proto-Thread is taking too long. We need to find out how to sleep in
* a Contiki-compatible way.
* Note that for a normal arduino sketch you won't have to include any
* of the contiki-specific files here, the sketch should just work.
*/
/*
* ------------------------------------------------------------------------------------------------------------$
* Example sketch/program showing how to read new NUID from a PICC to serial.
* ------------------------------------------------------------------------------------------------------------$
* This is a MFRC522 library example; for further details and other examples see: https://github.com/miguelbalb$
*
* Example sketch/program showing how to the read data from a PICC (that is: a RFID Tag or Card) using a MFRC52$
* Reader on the Arduino SPI interface.
*
* When the Arduino and the MFRC522 module are connected (see the pin layout below), load this sketch into Ardu$
* then verify/compile and upload it. To see the output: use Tools, Serial Monitor of the IDE (hit Ctrl+Shft+M)$
* you present a PICC (that is: a RFID Tag or Card) at reading distance of the MFRC522 Reader/PCD, the serial o$
* will show the type, and the NUID if a new card has been detected. Note: you may see "Timeout in communicatio$
* when removing the PICC from reading distance too early.
*
* @license Released into the public domain.
*
* Typical pin layout used:
* -------------------------------------
* MFRC522 Merkurboard
* Reader/PCD ATmega
* Signal Pin Pin
* -------------------------------------
* RST/Reset RST D14
* SPI SS SDA(SS) D10
* SPI MOSI MOSI D11
* SPI MISO MISO D13
* SPI SCK SCK D12
*/
extern "C" {
#include "arduino-process.h"
#include "rest-engine.h"
#include "net/netstack.h"
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extern resource_t
res_led,
res_event,
res_separate,
res_battery,
res_cputemp;
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uint8_t led_pin=4;
uint8_t led_status;
}
#include <SPI.h>
#include <MFRC522.h>
#define SS_PIN 10
#define RST_PIN 14
MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class
MFRC522::MIFARE_Key key;
// Init array that will store new NUID
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byte nuidPICC[4];
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void setup (void)
{
// switch off the led
pinMode(led_pin, OUTPUT);
digitalWrite(led_pin, HIGH);
led_status=0;
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Serial1.begin(38400);
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// RFID Init
SPI.begin(); // Init SPI bus
rfid.PCD_Init(); // Init MFRC522
for (byte i = 0; i < 6; i++) {
key.keyByte[i] = 0xFF;
}
// init coap resourcen
rest_init_engine ();
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rest_activate_resource (&res_led, "s/led");
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rest_activate_resource (&res_battery, "s/battery");
rest_activate_resource (&res_cputemp, "s/cputemp");
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rest_activate_resource (&res_event, "s/rfid");
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// NETSTACK_MAC.off(1);
}
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/**
* Helper routine to dump a byte array as hex values to Serial.
*/
void printHex(byte *buffer, byte bufferSize) {
for (byte i = 0; i < bufferSize; i++) {
Serial1.print(buffer[i] < 0x10 ? " 0" : " ");
Serial1.print(buffer[i], HEX);
}
}
/**
* Helper routine to dump a byte array as dec values to Serial.
*/
void printDec(byte *buffer, byte bufferSize) {
for (byte i = 0; i < bufferSize; i++) {
Serial1.print(buffer[i] < 0x10 ? " 0" : " ");
Serial1.print(buffer[i], DEC);
}
}
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void coap_rfid (void)
{
/* Call the event_handler for this application-specific event. */
res_event.trigger();
/* Also call the separate response example handler. */
res_separate.resume();
}
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void loop (void)
{
// Look for new cards
if ( ! rfid.PICC_IsNewCardPresent())
return;
// Verify if the NUID has been readed
if ( ! rfid.PICC_ReadCardSerial())
return;
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Serial1.print(F("PICC type: "));
MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
Serial1.println(rfid.PICC_GetTypeName(piccType));
// Check is the PICC of Classic MIFARE type
if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
Serial1.println(F("Your tag is not of type MIFARE Classic."));
return;
}
if (rfid.uid.uidByte[0] != nuidPICC[0] ||
rfid.uid.uidByte[1] != nuidPICC[1] ||
rfid.uid.uidByte[2] != nuidPICC[2] ||
rfid.uid.uidByte[3] != nuidPICC[3] ) {
Serial1.println(F("A new card has been detected."));
// Store NUID into nuidPICC array
for (byte i = 0; i < 4; i++) {
nuidPICC[i] = rfid.uid.uidByte[i];
}
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coap_rfid();
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Serial1.println(F("The NUID tag is:"));
Serial1.print(F("In hex: "));
printHex(rfid.uid.uidByte, rfid.uid.size);
Serial1.println();
Serial1.print(F("In dec: "));
printDec(rfid.uid.uidByte, rfid.uid.size);
Serial1.println();
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}else{
Serial1.println(F("Card read previously."));
coap_rfid();
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}
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// Halt PICC
rfid.PICC_HaltA();
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// Stop encryption on PCD
rfid.PCD_StopCrypto1();
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}