/**************************************************************************/
/*!
 @file     PN532.c
 @author   Luca Faccin
 @license  BSD (see license.txt)

 This is a port of the Adafruit PN532 Driver for the ESP32 using only the I2C Bus
 Driver for NXP's PN532 NFC/13.56MHz RFID Transceiver

 @section  HISTORY
 v 1.0		Basic port of the v 2.1 of the Adafruit PN532 Driver
 */
/**************************************************************************/

#ifndef PN532_H
#define PN532_H

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include "esp_system.h"
#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "driver/i2c.h"

#define PN532_PREAMBLE                      (0x00)
#define PN532_STARTCODE1                    (0x00)
#define PN532_STARTCODE2                    (0xFF)
#define PN532_POSTAMBLE                     (0x00)

#define PN532_HOSTTOPN532                   (0xD4)
#define PN532_PN532TOHOST                   (0xD5)

// 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_RESPONSE_INDATAEXCHANGE       (0x41)
#define PN532_RESPONSE_INLISTPASSIVETARGET  (0x4B)

#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)
#define PN532_I2C_READ_ADDRESS							(0x49)
#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)
#define MIFARE_ULTRALIGHT_CMD_WRITE         (0xA2)

// 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 I2C_WRITE_TIMEOUT										1000 						//ms
#define I2C_READ_TIMEOUT										1000						//ms
#define IRQ_WAIT_TIMEOUT										1000						//ms

//Initialize the I2C the the reset/IRQ pint
bool init_PN532_I2C(uint8_t sda, uint8_t scl,uint8_t reset,uint8_t irq,i2c_port_t i2c_port_number);

// Generic PN532 functions
bool SAMConfig(void);
uint32_t getPN532FirmwareVersion(void);
bool sendCommandCheckAck(uint8_t *cmd, uint8_t cmdlen, uint16_t timeout);
bool writeGPIO(uint8_t pinstate);
uint8_t readGPIO(void);
bool setPassiveActivationRetries(uint8_t maxRetries);

// ISO14443A functions
bool readPassiveTargetID(uint8_t cardbaudrate, uint8_t * uid, uint8_t * uidLength, uint16_t timeout); //timeout 0 means no timeout - will block forever.
bool inDataExchange(uint8_t * send, uint8_t sendLength, uint8_t * response, uint8_t * responseLength);
bool inListPassiveTarget();

// Mifare Classic functions
bool mifareclassic_IsFirstBlock (uint32_t uiBlock);
bool mifareclassic_IsTrailerBlock (uint32_t uiBlock);
uint8_t mifareclassic_AuthenticateBlock (uint8_t * uid, uint8_t uidLen, uint32_t blockNumber, uint8_t keyNumber, uint8_t * keyData);
uint8_t mifareclassic_ReadDataBlock (uint8_t blockNumber, uint8_t * data);
uint8_t mifareclassic_WriteDataBlock (uint8_t blockNumber, uint8_t * data);
uint8_t mifareclassic_FormatNDEF (void);
uint8_t mifareclassic_WriteNDEFURI (uint8_t sectorNumber, uint8_t uriIdentifier, const char * url);

// Mifare Ultralight functions
uint8_t mifareultralight_ReadPage (uint8_t page, uint8_t * buffer);
uint8_t mifareultralight_WritePage (uint8_t page, uint8_t * data);

// NTAG2xx functions
uint8_t ntag2xx_ReadPage (uint8_t page, uint8_t * buffer);
uint8_t ntag2xx_WritePage (uint8_t page, uint8_t * data);
uint8_t ntag2xx_WriteNDEFURI (uint8_t uriIdentifier, char * url, uint8_t dataLen);


//Target command
bool initiate_as_target_106();

#endif