Seeed
PN532 NFC library for Seeed Studio's NFC Shield
Fork of
PN532
by 
Yihui Xiong
PN532.cpp
- Committer:
- yihui
- Date:
- 2013-10-08
- Revision:
- 0:9c6b9280c0e1
- Child:
- 1:b8cab5222fd0
File content as of revision 0:9c6b9280c0e1:
/**
* \file PN532.cpp
* \brief PN532 NFC library, Ported from https://github.com/Seeed-Studio/PN532 for Arduino
* \license BSD
*/
#include <string.h>
#include "PN532.h"
#include "debug.h"
#include "PN532_SPI.h"
#define HAL(func) (_interface->func)
uint8_t pn532response_firmwarevers[] = {0x00, 0xFF, 0x06, 0xFA, 0xD5, 0x03};
// Uncomment these lines to enable debug output for PN532(I2C) and/or MIFARE related code
#define PN532DEBUG
// #define MIFAREDEBUG
#define PN532_PACKBUFFSIZ 128
uint8_t pn532_packetbuffer[PN532_PACKBUFFSIZ];
PN532::PN532(PN532Interface &interface)
{
_interface = &interface;
}
PN532::PN532(PinName mosi, PinName miso, PinName sclk, PinName cs)
{
_spi = new SPI(mosi, miso, sclk);
_interface = new PN532_SPI(_spi, cs);
}
PN532::~PN532()
{
if (_spi) {
delete _spi;
}
}
/**************************************************************************/
/*!
@brief Setups the HW
*/
/**************************************************************************/
void PN532::begin()
{
HAL(begin)();
HAL(wakeup)();
}
/**************************************************************************/
/*!
@brief Prints a hexadecimal value in plain characters
@param data Pointer to the uint8_t data
@param numBytes Data length in bytes
*/
/**************************************************************************/
void PN532::PrintHex(const uint8_t * data, const uint32_t numBytes)
{
}
/**************************************************************************/
/*!
@brief Prints a hexadecimal value in plain characters, along with
the char equivalents in the following format
00 00 00 00 00 00 ......
@param data Pointer to the uint8_t data
@param numBytes Data length in bytes
*/
/**************************************************************************/
void PN532::PrintHexChar(const uint8_t * data, const uint32_t numBytes)
{
}
/**************************************************************************/
/*!
@brief Checks the firmware version of the PN5xx chip
@returns The chip's firmware version and ID
*/
/**************************************************************************/
uint32_t PN532::getFirmwareVersion(void) {
uint32_t response;
pn532_packetbuffer[0] = PN532_COMMAND_GETFIRMWAREVERSION;
if (HAL(writeCommand)(pn532_packetbuffer, 1))
return 0;
// read data packet
int16_t status = HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
if (0 > status) {
DMSG("GetFirmwareVersion: error code");
return 0;
}
response = pn532_packetbuffer[0];
response <<= 8;
response |= pn532_packetbuffer[1];
response <<= 8;
response |= pn532_packetbuffer[2];
response <<= 8;
response |= pn532_packetbuffer[3];
return response;
}
/**************************************************************************/
/*!
Writes an 8-bit value that sets the state of the PN532's GPIO pins
@warning This function is provided exclusively for board testing and
is dangerous since it will throw an error if any pin other
than the ones marked "Can be used as GPIO" are modified! All
pins that can not be used as GPIO should ALWAYS be left high
(value = 1) or the system will become unstable and a HW reset
will be required to recover the PN532.
pinState[0] = P30 Can be used as GPIO
pinState[1] = P31 Can be used as GPIO
pinState[2] = P32 *** RESERVED (Must be 1!) ***
pinState[3] = P33 Can be used as GPIO
pinState[4] = P34 *** RESERVED (Must be 1!) ***
pinState[5] = P35 Can be used as GPIO
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
bool PN532::writeGPIO(uint8_t pinstate) {
uint8_t errorbit;
// Make sure pinstate does not try to toggle P32 or P34
pinstate |= (1 << PN532_GPIO_P32) | (1 << PN532_GPIO_P34);
// Fill command buffer
pn532_packetbuffer[0] = PN532_COMMAND_WRITEGPIO;
pn532_packetbuffer[1] = PN532_GPIO_VALIDATIONBIT | pinstate; // P3 Pins
pn532_packetbuffer[2] = 0x00; // P7 GPIO Pins (not used ... taken by I2C)
DMSG("Writing P3 GPIO: ");
DMSG_HEX(pn532_packetbuffer[1]);
// Send the WRITEGPIO command (0x0E)
if (HAL(writeCommand)(pn532_packetbuffer, 3))
return 0;
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
Reads the state of the PN532's GPIO pins
@returns An 8-bit value containing the pin state where:
pinState[0] = P30
pinState[1] = P31
pinState[2] = P32
pinState[3] = P33
pinState[4] = P34
pinState[5] = P35
*/
/**************************************************************************/
uint8_t PN532::readGPIO(void) {
pn532_packetbuffer[0] = PN532_COMMAND_READGPIO;
// Send the READGPIO command (0x0C)
if (HAL(writeCommand)(pn532_packetbuffer, 1))
return 0x0;
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
/* READGPIO response without prefix and suffix should be in the following format:
uint8_t Description
------------- ------------------------------------------
b0 P3 GPIO Pins
b1 P7 GPIO Pins (not used ... taken by I2C)
b2 Interface Mode Pins (not used ... bus select pins)
*/
DMSG("P3 GPIO: "); DMSG_HEX(pn532_packetbuffer[7]);
DMSG("P7 GPIO: "); DMSG_HEX(pn532_packetbuffer[8]);
DMSG("I0I1 GPIO: "); DMSG_HEX(pn532_packetbuffer[9]);
return pn532_packetbuffer[0];
}
/**************************************************************************/
/*!
@brief Configures the SAM (Secure Access Module)
*/
/**************************************************************************/
bool PN532::SAMConfig(void) {
pn532_packetbuffer[0] = PN532_COMMAND_SAMCONFIGURATION;
pn532_packetbuffer[1] = 0x01; // normal mode;
pn532_packetbuffer[2] = 0x14; // timeout 50ms * 20 = 1 second
pn532_packetbuffer[3] = 0x01; // use IRQ pin!
if (HAL(writeCommand)(pn532_packetbuffer, 4))
return false;
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
Sets the MxRtyPassiveActivation uint8_t of the RFConfiguration register
@param maxRetries 0xFF to wait forever, 0x00..0xFE to timeout
after mxRetries
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
bool PN532::setPassiveActivationRetries(uint8_t maxRetries) {
pn532_packetbuffer[0] = PN532_COMMAND_RFCONFIGURATION;
pn532_packetbuffer[1] = 5; // Config item 5 (MaxRetries)
pn532_packetbuffer[2] = 0xFF; // MxRtyATR (default = 0xFF)
pn532_packetbuffer[3] = 0x01; // MxRtyPSL (default = 0x01)
pn532_packetbuffer[4] = maxRetries;
if (HAL(writeCommand)(pn532_packetbuffer, 5))
return 0x0; // no ACK
return 1;
}
/***** ISO14443A Commands ******/
/**************************************************************************/
/*!
Waits for an ISO14443A target to enter the field
@param cardBaudRate Baud rate of the card
@param uid Pointer to the array that will be populated
with the card's UID (up to 7 bytes)
@param uidLength Pointer to the variable that will hold the
length of the card's UID.
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
bool PN532::readPassiveTargetID(uint8_t cardbaudrate, uint8_t * uid, uint8_t * uidLength) {
pn532_packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;
pn532_packetbuffer[1] = 1; // max 1 cards at once (we can set this to 2 later)
pn532_packetbuffer[2] = cardbaudrate;
if (HAL(writeCommand)(pn532_packetbuffer, 3))
{
DMSG("No card(s) read");
return 0x0; // no cards read
}
// Wait for a card to enter the field
uint8_t status = PN532_I2C_BUSY;
// read data packet
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
// check some basic stuff
/* ISO14443A card response should be in the following format:
uint8_t Description
------------- ------------------------------------------
b0..6 Frame header and preamble
b7 Tags Found
b8 Tag Number (only one used in this example)
b9..10 SENS_RES
b11 SEL_RES
b12 NFCID Length
b13..NFCIDLen NFCID */
if (pn532_packetbuffer[0] != 1)
return 0;
uint16_t sens_res = pn532_packetbuffer[2];
sens_res <<= 8;
sens_res |= pn532_packetbuffer[3];
DMSG("ATQA: 0x"); DMSG_HEX(sens_res);
DMSG("SAK: 0x"); DMSG_HEX(pn532_packetbuffer[4]);
/* Card appears to be Mifare Classic */
*uidLength = pn532_packetbuffer[5];
for (uint8_t i=0; i < pn532_packetbuffer[5]; i++)
{
uid[i] = pn532_packetbuffer[6+i];
}
return 1;
}
/***** Mifare Classic Functions ******/
/**************************************************************************/
/*!
Indicates whether the specified block number is the first block
in the sector (block 0 relative to the current sector)
*/
/**************************************************************************/
bool PN532::mifareclassic_IsFirstBlock (uint32_t uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128)
return ((uiBlock) % 4 == 0);
else
return ((uiBlock) % 16 == 0);
}
/**************************************************************************/
/*!
Indicates whether the specified block number is the sector trailer
*/
/**************************************************************************/
bool PN532::mifareclassic_IsTrailerBlock (uint32_t uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128)
return ((uiBlock + 1) % 4 == 0);
else
return ((uiBlock + 1) % 16 == 0);
}
/**************************************************************************/
/*!
Tries to authenticate a block of memory on a MIFARE card using the
INDATAEXCHANGE command. See section 7.3.8 of the PN532 User Manual
for more information on sending MIFARE and other commands.
@param uid Pointer to a uint8_t array containing the card UID
@param uidLen The length (in bytes) of the card's UID (Should
be 4 for MIFARE Classic)
@param blockNumber The block number to authenticate. (0..63 for
1KB cards, and 0..255 for 4KB cards).
@param keyNumber Which key type to use during authentication
(0 = MIFARE_CMD_AUTH_A, 1 = MIFARE_CMD_AUTH_B)
@param keyData Pointer to a uint8_t array containing the 6 uint8_t
key value
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_AuthenticateBlock (uint8_t * uid, uint8_t uidLen, uint32_t blockNumber, uint8_t keyNumber, uint8_t * keyData)
{
uint8_t len;
uint8_t i;
// Hang on to the key and uid data
memcpy (_key, keyData, 6);
memcpy (_uid, uid, uidLen);
_uidLen = uidLen;
#ifdef MIFAREDEBUG
Serial.print("Trying to authenticate card ");
PN532::PrintHex(_uid, _uidLen);
Serial.print("Using authentication KEY ");Serial.print(keyNumber ? 'B' : 'A');Serial.print(": ");
PN532::PrintHex(_key, 6);
#endif
// Prepare the authentication command //
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE; /* Data Exchange Header */
pn532_packetbuffer[1] = 1; /* Max card numbers */
pn532_packetbuffer[2] = (keyNumber) ? MIFARE_CMD_AUTH_B : MIFARE_CMD_AUTH_A;
pn532_packetbuffer[3] = blockNumber; /* Block Number (1K = 0..63, 4K = 0..255 */
memcpy (pn532_packetbuffer+4, _key, 6);
for (i = 0; i < _uidLen; i++)
{
pn532_packetbuffer[10+i] = _uid[i]; /* 4 uint8_t card ID */
}
if (HAL(writeCommand)(pn532_packetbuffer, 10+_uidLen))
return 0;
// Read the response packet
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
// Check if the response is valid and we are authenticated???
// for an auth success it should be bytes 5-7: 0xD5 0x41 0x00
// Mifare auth error is technically uint8_t 7: 0x14 but anything other and 0x00 is not good
if (pn532_packetbuffer[0] != 0x00)
{
DMSG("Authentification failed\n");
return 0;
}
return 1;
}
/**************************************************************************/
/*!
Tries to read an entire 16-uint8_t data block at the specified block
address.
@param blockNumber The block number to authenticate. (0..63 for
1KB cards, and 0..255 for 4KB cards).
@param data Pointer to the uint8_t array that will hold the
retrieved data (if any)
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_ReadDataBlock (uint8_t blockNumber, uint8_t * data)
{
#ifdef MIFAREDEBUG
Serial.print("Trying to read 16 bytes from block ");Serial.println(blockNumber);
#endif
/* Prepare the command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */
pn532_packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 4))
{
#ifdef MIFAREDEBUG
Serial.println("Failed to receive ACK for read command");
#endif
return 0;
}
/* Read the response packet */
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
/* If uint8_t 8 isn't 0x00 we probably have an error */
if (pn532_packetbuffer[0] != 0x00)
{
return 0;
}
/* Copy the 16 data bytes to the output buffer */
/* Block content starts at uint8_t 9 of a valid response */
memcpy (data, pn532_packetbuffer+1, 16);
return 1;
}
/**************************************************************************/
/*!
Tries to write an entire 16-uint8_t data block at the specified block
address.
@param blockNumber The block number to authenticate. (0..63 for
1KB cards, and 0..255 for 4KB cards).
@param data The uint8_t array that contains the data to write.
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_WriteDataBlock (uint8_t blockNumber, uint8_t * data)
{
/* Prepare the first command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_WRITE; /* Mifare Write command = 0xA0 */
pn532_packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */
memcpy (pn532_packetbuffer+4, data, 16); /* Data Payload */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 20))
{
DMSG("Failed to receive ACK for write command");
return 0;
}
/* Read the response packet */
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
Formats a Mifare Classic card to store NDEF Records
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_FormatNDEF (void)
{
uint8_t sectorbuffer1[16] = {0x14, 0x01, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1};
uint8_t sectorbuffer2[16] = {0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1};
uint8_t sectorbuffer3[16] = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0x78, 0x77, 0x88, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
// Note 0xA0 0xA1 0xA2 0xA3 0xA4 0xA5 must be used for key A
// for the MAD sector in NDEF records (sector 0)
// Write block 1 and 2 to the card
if (!(mifareclassic_WriteDataBlock (1, sectorbuffer1)))
return 0;
if (!(mifareclassic_WriteDataBlock (2, sectorbuffer2)))
return 0;
// Write key A and access rights card
if (!(mifareclassic_WriteDataBlock (3, sectorbuffer3)))
return 0;
// Seems that everything was OK (?!)
return 1;
}
/**************************************************************************/
/*!
Writes an NDEF URI Record to the specified sector (1..15)
Note that this function assumes that the Mifare Classic card is
already formatted to work as an "NFC Forum Tag" and uses a MAD1
file system. You can use the NXP TagWriter app on Android to
properly format cards for this.
@param sectorNumber The sector that the URI record should be written
to (can be 1..15 for a 1K card)
@param uriIdentifier The uri identifier code (0 = none, 0x01 =
"http://www.", etc.)
@param url The uri text to write (max 38 characters).
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_WriteNDEFURI (uint8_t sectorNumber, uint8_t uriIdentifier, const char * url)
{
// Figure out how long the string is
uint8_t len = strlen(url);
// Make sure we're within a 1K limit for the sector number
if ((sectorNumber < 1) || (sectorNumber > 15))
return 0;
// Make sure the URI payload is between 1 and 38 chars
if ((len < 1) || (len > 38))
return 0;
// Note 0xD3 0xF7 0xD3 0xF7 0xD3 0xF7 must be used for key A
// in NDEF records
// Setup the sector buffer (w/pre-formatted TLV wrapper and NDEF message)
uint8_t sectorbuffer1[16] = {0x00, 0x00, 0x03, len+5, 0xD1, 0x01, len+1, 0x55, uriIdentifier, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t sectorbuffer2[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t sectorbuffer3[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t sectorbuffer4[16] = {0xD3, 0xF7, 0xD3, 0xF7, 0xD3, 0xF7, 0x7F, 0x07, 0x88, 0x40, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
if (len <= 6)
{
// Unlikely we'll get a url this short, but why not ...
memcpy (sectorbuffer1+9, url, len);
sectorbuffer1[len+9] = 0xFE;
}
else if (len == 7)
{
// 0xFE needs to be wrapped around to next block
memcpy (sectorbuffer1+9, url, len);
sectorbuffer2[0] = 0xFE;
}
else if ((len > 7) || (len <= 22))
{
// Url fits in two blocks
memcpy (sectorbuffer1+9, url, 7);
memcpy (sectorbuffer2, url+7, len-7);
sectorbuffer2[len-7] = 0xFE;
}
else if (len == 23)
{
// 0xFE needs to be wrapped around to final block
memcpy (sectorbuffer1+9, url, 7);
memcpy (sectorbuffer2, url+7, len-7);
sectorbuffer3[0] = 0xFE;
}
else
{
// Url fits in three blocks
memcpy (sectorbuffer1+9, url, 7);
memcpy (sectorbuffer2, url+7, 16);
memcpy (sectorbuffer3, url+23, len-24);
sectorbuffer3[len-22] = 0xFE;
}
// Now write all three blocks back to the card
if (!(mifareclassic_WriteDataBlock (sectorNumber*4, sectorbuffer1)))
return 0;
if (!(mifareclassic_WriteDataBlock ((sectorNumber*4)+1, sectorbuffer2)))
return 0;
if (!(mifareclassic_WriteDataBlock ((sectorNumber*4)+2, sectorbuffer3)))
return 0;
if (!(mifareclassic_WriteDataBlock ((sectorNumber*4)+3, sectorbuffer4)))
return 0;
// Seems that everything was OK (?!)
return 1;
}
/***** Mifare Ultralight Functions ******/
/**************************************************************************/
/*!
Tries to read an entire 4-uint8_t page at the specified address.
@param page The page number (0..63 in most cases)
@param buffer Pointer to the uint8_t array that will hold the
retrieved data (if any)
*/
/**************************************************************************/
uint8_t PN532::mifareultralight_ReadPage (uint8_t page, uint8_t * buffer)
{
if (page >= 64)
{
DMSG("Page value out of range\n");
return 0;
}
/* Prepare the command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */
pn532_packetbuffer[3] = page; /* Page Number (0..63 in most cases) */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 4))
{
DMSG("Failed to receive ACK for write command\n");
return 0;
}
/* Read the response packet */
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
/* If uint8_t 8 isn't 0x00 we probably have an error */
if (pn532_packetbuffer[0] == 0x00)
{
/* Copy the 4 data bytes to the output buffer */
/* Block content starts at uint8_t 9 of a valid response */
/* Note that the command actually reads 16 uint8_t or 4 */
/* pages at a time ... we simply discard the last 12 */
/* bytes */
memcpy (buffer, pn532_packetbuffer+1, 4);
}
else
{
return 0;
}
// Return OK signal
return 1;
}
/**************************************************************************/
/*!
@brief Exchanges an APDU with the currently inlisted peer
@param send Pointer to data to send
@param sendLength Length of the data to send
@param response Pointer to response data
@param responseLength Pointer to the response data length
*/
/**************************************************************************/
bool PN532::inDataExchange(uint8_t * send, uint8_t sendLength, uint8_t * response, uint8_t * responseLength) {
if (sendLength > PN532_PACKBUFFSIZ -2) {
DMSG("APDU length too long for packet buffer");
return false;
}
uint8_t i;
pn532_packetbuffer[0] = 0x40; // PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = inListedTag;
for (i=0; i<sendLength; ++i) {
pn532_packetbuffer[i+2] = send[i];
}
if (HAL(writeCommand)(pn532_packetbuffer,sendLength+2)) {
DMSG("Could not send ADPU\n");
return false;
}
int16_t status = HAL(readResponse)(pn532_packetbuffer,sizeof(pn532_packetbuffer), 1000);
if (status < 0) {
return false;
}
uint8_t length = status;
if ((pn532_packetbuffer[0] & 0x3f)!=0) {
DMSG("Status code indicates an error\n");
return false;
}
length -= 1;
if (length > *responseLength) {
length = *responseLength; // silent truncation...
}
for (i=0; i<length; ++i) {
response[i] = pn532_packetbuffer[1+i];
}
*responseLength = length;
return true;
}
/**************************************************************************/
/*!
@brief 'InLists' a passive target. PN532 acting as reader/initiator,
peer acting as card/responder.
*/
/**************************************************************************/
bool PN532::inListPassiveTarget() {
pn532_packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;
pn532_packetbuffer[1] = 1;
pn532_packetbuffer[2] = 0;
DMSG("About to inList passive target");
if (HAL(writeCommand)(pn532_packetbuffer, 3)) {
DMSG("Could not send inlist message\n");
return false;
}
int16_t status = HAL(readResponse)(pn532_packetbuffer,sizeof(pn532_packetbuffer), 30000);
if (status < 0) {
return false;
}
if (pn532_packetbuffer[0] != 1) {
return false;
}
inListedTag = pn532_packetbuffer[1];
return true;
}
/**
* Peer to Peer
*/
int8_t PN532::tgInitAsTarget()
{
static const uint8_t command[] = {
PN532_COMMAND_TGINITASTARGET,
0,
0x00, 0x00, //SENS_RES
0x00, 0x00, 0x00, //NFCID1
0x40, //SEL_RES
0x01, 0xFE, 0x0F, 0xBB, 0xBA, 0xA6, 0xC9, 0x89, // POL_RES
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xFF, 0xFF,
0x01, 0xFE, 0x0F, 0xBB, 0xBA, 0xA6, 0xC9, 0x89, 0x00, 0x00, //NFCID3t: Change this to desired value
0x06, 0x46, 0x66, 0x6D, 0x01, 0x01, 0x10, 0x00// LLCP magic number and version parameter
};
int8_t status = HAL(writeCommand)(command, sizeof(command));
if (status < 0) {
return status;
}
return HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), 0);
}
int16_t PN532::tgGetData(uint8_t *buf, uint16_t len)
{
pn532_packetbuffer[0] = PN532_COMMAND_TGGETDATA;
if (HAL(writeCommand)(pn532_packetbuffer, 1)) {
DMSG("TgGetData: no ACK\n");
return -1;
}
int16_t status = HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), 3000);
if (0 > status) {
return status;
}
uint16_t length = status;
if (length > len) {
return -4;
}
if (pn532_packetbuffer[0] != 0) {
DMSG("status is not ok\n");
return -5;
}
memcpy(buf, pn532_packetbuffer + 1, length - 1);
return length - 1;
}
bool PN532::tgSetData(const uint8_t *buf, uint16_t len)
{
pn532_packetbuffer[0] = PN532_COMMAND_TGSETDATA;
if (len > (sizeof(pn532_packetbuffer) + 1)) {
return false;
}
memcpy(pn532_packetbuffer + 1, buf, len);
if (HAL(writeCommand)(pn532_packetbuffer, len + 1)) {
return false;
}
if (0 > HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), 3000)) {
return false;
}
if (0 != pn532_packetbuffer[0]) {
return false;
}
return true;
}