ifndef ADAFRUIT_FINGERPRINT_H
#define ADAFRUIT_FINGERPRINT_H
/***************************************************
This is a library for our optical Fingerprint sensor
Designed specifically to work with the Adafruit Fingerprint sensor
----> Fingerprint sensor : ID 751 : $49.95 : Adafruit Industries, Unique & fun DIY electronics and kits
These displays use TTL Serial to communicate, 2 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
#include "Arduino.h"
#if defined(AVR) || defined(ESP8266)
#include <SoftwareSerial.h>
#endif
#define FINGERPRINT_OK 0x00
#define FINGERPRINT_PACKETRECIEVEERR 0x01
#define FINGERPRINT_NOFINGER 0x02
#define FINGERPRINT_IMAGEFAIL 0x03
#define FINGERPRINT_IMAGEMESS 0x06
#define FINGERPRINT_FEATUREFAIL 0x07
#define FINGERPRINT_NOMATCH 0x08
#define FINGERPRINT_NOTFOUND 0x09
#define FINGERPRINT_ENROLLMISMATCH 0x0A
#define FINGERPRINT_BADLOCATION 0x0B
#define FINGERPRINT_DBRANGEFAIL 0x0C
#define FINGERPRINT_UPLOADFEATUREFAIL 0x0D
#define FINGERPRINT_PACKETRESPONSEFAIL 0x0E
#define FINGERPRINT_UPLOADFAIL 0x0F
#define FINGERPRINT_DELETEFAIL 0x10
#define FINGERPRINT_DBCLEARFAIL 0x11
#define FINGERPRINT_PASSFAIL 0x13
#define FINGERPRINT_INVALIDIMAGE 0x15
#define FINGERPRINT_FLASHERR 0x18
#define FINGERPRINT_INVALIDREG 0x1A
#define FINGERPRINT_ADDRCODE 0x20
#define FINGERPRINT_PASSVERIFY 0x21
#define FINGERPRINT_STARTCODE 0xEF01
#define FINGERPRINT_COMMANDPACKET 0x1
#define FINGERPRINT_DATAPACKET 0x2
#define FINGERPRINT_ACKPACKET 0x7
#define FINGERPRINT_ENDDATAPACKET 0x8
#define FINGERPRINT_TIMEOUT 0xFF
#define FINGERPRINT_BADPACKET 0xFE
#define FINGERPRINT_GETIMAGE 0x01
#define FINGERPRINT_IMAGE2TZ 0x02
#define FINGERPRINT_REGMODEL 0x05
#define FINGERPRINT_STORE 0x06
#define FINGERPRINT_LOAD 0x07
#define FINGERPRINT_UPLOAD 0x08
#define FINGERPRINT_DELETE 0x0C
#define FINGERPRINT_EMPTY 0x0D
#define FINGERPRINT_SETPASSWORD 0x12
#define FINGERPRINT_VERIFYPASSWORD 0x13
#define FINGERPRINT_HISPEEDSEARCH 0x1B
#define FINGERPRINT_TEMPLATECOUNT 0x1D
//#define FINGERPRINT_DEBUG
#define DEFAULTTIMEOUT 1000 ///< UART reading timeout in milliseconds
///! Helper class to craft UART packets
struct Adafruit_Fingerprint_Packet {
//
/*!
@brief Create a new UART-borne packet
@param type Command, data, ack type packet
@param length Size of payload
@param data Pointer to bytes of size length we will memcopy into the internal buffer
*/
//
Adafruit_Fingerprint_Packet(uint8_t type, uint16_t length, uint8_t * data) {
this->start_code = FINGERPRINT_STARTCODE;
this->type = type;
this->length = length;
address[0] = 0xFF; address[1] = 0xFF;
address[2] = 0xFF; address[3] = 0xFF;
if(length<64)
memcpy(this->data, data, length);
else
memcpy(this->data, data, 64);
}
uint16_t start_code; ///< "Wakeup" code for packet detection
uint8_t address[4]; ///< 32-bit Fingerprint sensor address
uint8_t type; ///< Type of packet
uint16_t length; ///< Length of packet
uint8_t data[64]; ///< The raw buffer for packet payload
};
///! Helper class to communicate with and keep state for fingerprint sensors
class Adafruit_Fingerprint {
public:
#if defined(AVR) || defined(ESP8266)
Adafruit_Fingerprint(SoftwareSerial *ss, uint32_t password = 0x0);
#endif
Adafruit_Fingerprint(HardwareSerial *hs, uint32_t password = 0x0);
void begin(uint32_t baud);
boolean verifyPassword(void);
uint8_t getImage(void);
uint8_t image2Tz(uint8_t slot = 1);
uint8_t createModel(void);
uint8_t emptyDatabase(void);
uint8_t storeModel(uint16_t id);
uint8_t loadModel(uint16_t id);
uint8_t getModel(void);
uint8_t deleteModel(uint16_t id);
uint8_t fingerFastSearch(void);
uint8_t getTemplateCount(void);
uint8_t setPassword(uint32_t password);
void writeStructuredPacket(const Adafruit_Fingerprint_Packet & p);
uint8_t getStructuredPacket(Adafruit_Fingerprint_Packet * p, uint16_t timeout=DEFAULTTIMEOUT);
/// The matching location that is set by fingerFastSearch()
uint16_t fingerID;
/// The confidence of the fingerFastSearch() match, higher numbers are more confidents
uint16_t confidence;
/// The number of stored templates in the sensor, set by getTemplateCount()
uint16_t templateCount;
private:
uint8_t checkPassword(void);
uint32_t thePassword;
uint32_t theAddress;
uint8_t recvPacket[20];
Stream *mySerial;
#if defined(AVR) || defined(ESP8266)
SoftwareSerial *swSerial;
#endif
HardwareSerial *hwSerial;
};
#endif
This is the adafruit code for fingerprint matching. Can someone please tell me on what algorithm is used for matching the fingerprint i.e minutiae extraction etc and all. Thanks in advance