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#ifndef NFC_H

#define	NFC_H

/* PN532 NFC Reader from Adafruit */

#define PN532_PREAMBLE                      (0x00)

#define PN532_STARTCODE1                    (0x00)

#define PN532_STARTCODE2                    (0xFF)

#define PN532_POSTAMBLE                     (0x00)

#define PN532_HOSTTOPN532                   (0xD4)

// PN532 Commands

#define PN532_COMMAND_DIAGNOSE              (0x00)

#define PN532_COMMAND_GETFIRMWAREVERSION    (0x02)

#define PN532_COMMAND_GETGENERALSTATUS      (0x04)

#define PN532_COMMAND_READREGISTER          (0x06)

#define PN532_COMMAND_WRITEREGISTER         (0x08)

#define PN532_COMMAND_READGPIO              (0x0C)

#define PN532_COMMAND_WRITEGPIO             (0x0E)

#define PN532_COMMAND_SETSERIALBAUDRATE     (0x10)

#define PN532_COMMAND_SETPARAMETERS         (0x12)

#define PN532_COMMAND_SAMCONFIGURATION      (0x14)

#define PN532_COMMAND_POWERDOWN             (0x16)

#define PN532_COMMAND_RFCONFIGURATION       (0x32)

#define PN532_COMMAND_RFREGULATIONTEST      (0x58)

#define PN532_COMMAND_INJUMPFORDEP          (0x56)

#define PN532_COMMAND_INJUMPFORPSL          (0x46)

#define PN532_COMMAND_INLISTPASSIVETARGET   (0x4A)

#define PN532_COMMAND_INATR                 (0x50)

#define PN532_COMMAND_INPSL                 (0x4E)

#define PN532_COMMAND_INDATAEXCHANGE        (0x40)

#define PN532_COMMAND_INCOMMUNICATETHRU     (0x42)

#define PN532_COMMAND_INDESELECT            (0x44)

#define PN532_COMMAND_INRELEASE             (0x52)

#define PN532_COMMAND_INSELECT              (0x54)

#define PN532_COMMAND_INAUTOPOLL            (0x60)

#define PN532_COMMAND_TGINITASTARGET        (0x8C)

#define PN532_COMMAND_TGSETGENERALBYTES     (0x92)

#define PN532_COMMAND_TGGETDATA             (0x86)

#define PN532_COMMAND_TGSETDATA             (0x8E)

#define PN532_COMMAND_TGSETMETADATA         (0x94)

#define PN532_COMMAND_TGGETINITIATORCOMMAND (0x88)

#define PN532_COMMAND_TGRESPONSETOINITIATOR (0x90)

#define PN532_COMMAND_TGGETTARGETSTATUS     (0x8A)

#define PN532_WAKEUP                        (0x55)

#define PN532_SPI_STATREAD                  (0x02)

#define PN532_SPI_DATAWRITE                 (0x01)

#define PN532_SPI_DATAREAD                  (0x03)

#define PN532_SPI_READY                     (0x01)

#define PN532_I2C_ADDRESS                   (0x48 >> 1)

#define PN532_I2C_READBIT                   (0x01)

#define PN532_I2C_BUSY                      (0x00)

#define PN532_I2C_READY                     (0x01)

#define PN532_I2C_READYTIMEOUT              (20)

#define PN532_MIFARE_ISO14443A              (0x00)

// Mifare Commands

#define MIFARE_CMD_AUTH_A                   (0x60)

#define MIFARE_CMD_AUTH_B                   (0x61)

#define MIFARE_CMD_READ                     (0x30)

#define MIFARE_CMD_WRITE                    (0xA0)

#define MIFARE_CMD_TRANSFER                 (0xB0)

#define MIFARE_CMD_DECREMENT                (0xC0)

#define MIFARE_CMD_INCREMENT                (0xC1)

#define MIFARE_CMD_STORE                    (0xC2)

// Prefixes for NDEF Records (to identify record type)

#define NDEF_URIPREFIX_NONE                 (0x00)

#define NDEF_URIPREFIX_HTTP_WWWDOT          (0x01)

#define NDEF_URIPREFIX_HTTPS_WWWDOT         (0x02)

#define NDEF_URIPREFIX_HTTP                 (0x03)

#define NDEF_URIPREFIX_HTTPS                (0x04)

#define NDEF_URIPREFIX_TEL                  (0x05)

#define NDEF_URIPREFIX_MAILTO               (0x06)

#define NDEF_URIPREFIX_FTP_ANONAT           (0x07)

#define NDEF_URIPREFIX_FTP_FTPDOT           (0x08)

#define NDEF_URIPREFIX_FTPS                 (0x09)

#define NDEF_URIPREFIX_SFTP                 (0x0A)

#define NDEF_URIPREFIX_SMB                  (0x0B)

#define NDEF_URIPREFIX_NFS                  (0x0C)

#define NDEF_URIPREFIX_FTP                  (0x0D)

#define NDEF_URIPREFIX_DAV                  (0x0E)

#define NDEF_URIPREFIX_NEWS                 (0x0F)

#define NDEF_URIPREFIX_TELNET               (0x10)

#define NDEF_URIPREFIX_IMAP                 (0x11)

#define NDEF_URIPREFIX_RTSP                 (0x12)

#define NDEF_URIPREFIX_URN                  (0x13)

#define NDEF_URIPREFIX_POP                  (0x14)

#define NDEF_URIPREFIX_SIP                  (0x15)

#define NDEF_URIPREFIX_SIPS                 (0x16)

#define NDEF_URIPREFIX_TFTP                 (0x17)

#define NDEF_URIPREFIX_BTSPP                (0x18)

#define NDEF_URIPREFIX_BTL2CAP              (0x19)

#define NDEF_URIPREFIX_BTGOEP               (0x1A)

#define NDEF_URIPREFIX_TCPOBEX              (0x1B)

#define NDEF_URIPREFIX_IRDAOBEX             (0x1C)

#define NDEF_URIPREFIX_FILE                 (0x1D)

#define NDEF_URIPREFIX_URN_EPC_ID           (0x1E)

#define NDEF_URIPREFIX_URN_EPC_TAG          (0x1F)

#define NDEF_URIPREFIX_URN_EPC_PAT          (0x20)

#define NDEF_URIPREFIX_URN_EPC_RAW          (0x21)

#define NDEF_URIPREFIX_URN_EPC              (0x22)

#define NDEF_URIPREFIX_URN_NFC              (0x23)

#define PN532_GPIO_VALIDATIONBIT            (0x80)

#define PN532_GPIO_P30                      (0)

#define PN532_GPIO_P31                      (1)

#define PN532_GPIO_P32                      (2)

#define PN532_GPIO_P33                      (3)

#define PN532_GPIO_P34                      (4)

#define PN532_GPIO_P35                      (5)

#define PN532_PACKBUFFSIZ 64

#define PN532_TIMEOUT 1000

typedef struct {

    unsigned char IC;

    unsigned char Ver;

    unsigned char Rev;

    unsigned char Support;

} NFC_FIRMWARE_VERSION;

typedef struct {

    unsigned char TG;

    unsigned char SENS_RES[2];

    unsigned char SEL_RES;

    unsigned char NFCID_LEN;

    unsigned char NFCID[7];

} NFC_TargetDataMiFare;

// Size can be 9 or 12 bytes

typedef struct __NFC_DATA {

    unsigned char packetbuffer[PN532_PACKBUFFSIZ];

} NFC_DATA;

void NFC_Init(void);

// Generic PN532 functions

unsigned char NFC_SAMConfig(void);

NFC_FIRMWARE_VERSION NFC_Get_Firmware_Version(void);

unsigned char NFC_Send_Command_Check_Ack(unsigned char *cmd, unsigned char cmdlen);

//unsigned char NFC_writeGPIO(unsigned char pinstate);

//unsigned char NFC_readGPIO(void);

// ISO14443A functions

unsigned char NFC_Read_Passive_Target_ID(NFC_TargetDataMiFare *uidData);

unsigned char NFC_Poll_Targets(unsigned char number, unsigned char period, NFC_TargetDataMiFare *uidData);

// Mifare Classic functions

unsigned char NFC_mifareclassic_IsFirstBlock(unsigned long uiBlock);

unsigned char NFC_mifareclassic_IsTrailerBlock(unsigned long uiBlock);

unsigned char NFC_mifareclassic_AuthenticateBlock(unsigned char *uid, unsigned char uidLen, unsigned long blockNumber, unsigned char keyNumber, unsigned char *keyData);

unsigned char NFC_mifareclassic_ReadDataBlock(unsigned char blockNumber, unsigned char *data);

unsigned char NFC_mifareclassic_WriteDataBlock(unsigned char blockNumber, unsigned char *data);

unsigned char NFC_mifareclassic_FormatNDEF(void);

unsigned char NFC_mifareclassic_WriteNDEFURI(unsigned char sectorNumber, unsigned char uriIdentifier, const char * url);

// Mifare Ultralight functions

//unsigned char NFC_mifareultralight_ReadPage(unsigned char page, unsigned char * buffer);

// Low level SPI functions

unsigned char NFC_I2C_Read_ACK(void);

unsigned char NFC_I2C_Read_Status(void);

void NFC_I2C_Read_Data(unsigned char *buffer, unsigned char length);

void NFC_I2C_Write_Cmd(unsigned char *cmd, unsigned char cmdlen);

#endif