/******************************************************************************
* \attention
*
* <h2><center>© COPYRIGHT 2020 STMicroelectronics</center></h2>
*
* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* www.st.com/myliberty
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/*
* PROJECT: ST25R391x firmware
* Revision:
* LANGUAGE: ISO C99
*/
/*! \file rfal_t2t.c
*
* \author
*
* \brief Provides NFC-A T2T convenience methods and definitions
*
* This module provides an interface to perform as a NFC-A Reader/Writer
* to handle a Type 2 Tag T2T
*
*/
/*
******************************************************************************
* INCLUDES
******************************************************************************
*/
#include "rfal_t2t.h"
#include "utils.h"
/*
******************************************************************************
* ENABLE SWITCH
******************************************************************************
*/
#ifndef RFAL_FEATURE_T2T
#define RFAL_FEATURE_T2T false /* T2T module configuration missing. Disabled by default */
#endif
#if RFAL_FEATURE_T2T
/*
******************************************************************************
* GLOBAL DEFINES
******************************************************************************
*/
#define RFAL_FDT_POLL_READ_MAX \
rfalConvMsTo1fc( \
5U) /*!< Maximum Wait time for Read command as defined in TS T2T 1.0 table 18 */
#define RFAL_FDT_POLL_WRITE_MAX \
rfalConvMsTo1fc( \
10U) /*!< Maximum Wait time for Write command as defined in TS T2T 1.0 table 18 */
#define RFAL_FDT_POLL_SL_MAX \
rfalConvMsTo1fc( \
1U) /*!< Maximum Wait time for Sector Select as defined in TS T2T 1.0 table 18 */
#define RFAL_T2T_ACK_NACK_LEN \
1U /*!< Len of NACK in bytes (4 bits) */
#define RFAL_T2T_ACK \
0x0AU /*!< ACK value */
#define RFAL_T2T_ACK_MASK \
0x0FU /*!< ACK value */
#define RFAL_T2T_SECTOR_SELECT_P1_BYTE2 \
0xFFU /*!< Sector Select Packet 1 byte 2 */
#define RFAL_T2T_SECTOR_SELECT_P2_RFU_LEN \
3U /*!< Sector Select RFU length */
/*
******************************************************************************
* GLOBAL TYPES
******************************************************************************
*/
/*! NFC-A T2T command set T2T 1.0 5.1 */
typedef enum {
RFAL_T2T_CMD_READ = 0x30, /*!< T2T Read */
RFAL_T2T_CMD_WRITE = 0xA2, /*!< T2T Write */
RFAL_T2T_CMD_SECTOR_SELECT = 0xC2 /*!< T2T Sector Select */
} rfalT2Tcmds;
/*! NFC-A T2T READ T2T 1.0 5.2 and table 11 */
typedef struct {
uint8_t code; /*!< Command code */
uint8_t blNo; /*!< Block number */
} rfalT2TReadReq;
/*! NFC-A T2T WRITE T2T 1.0 5.3 and table 12 */
typedef struct {
uint8_t code; /*!< Command code */
uint8_t blNo; /*!< Block number */
uint8_t data[RFAL_T2T_WRITE_DATA_LEN]; /*!< Data */
} rfalT2TWriteReq;
/*! NFC-A T2T SECTOR SELECT Packet 1 T2T 1.0 5.4 and table 13 */
typedef struct {
uint8_t code; /*!< Command code */
uint8_t byte2; /*!< Sector Select Packet 1 byte 2 */
} rfalT2TSectorSelectP1Req;
/*! NFC-A T2T SECTOR SELECT Packet 2 T2T 1.0 5.4 and table 13 */
typedef struct {
uint8_t secNo; /*!< Block number */
uint8_t rfu[RFAL_T2T_SECTOR_SELECT_P2_RFU_LEN]; /*!< Sector Select Packet RFU */
} rfalT2TSectorSelectP2Req;
/*
******************************************************************************
* GLOBAL FUNCTIONS
******************************************************************************
*/
ReturnCode
rfalT2TPollerRead(uint8_t blockNum, uint8_t* rxBuf, uint16_t rxBufLen, uint16_t* rcvLen) {
ReturnCode ret;
rfalT2TReadReq req;
if((rxBuf == NULL) || (rcvLen == NULL)) {
return ERR_PARAM;
}
req.code = (uint8_t)RFAL_T2T_CMD_READ;
req.blNo = blockNum;
/* Transceive Command */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&req,
sizeof(rfalT2TReadReq),
rxBuf,
rxBufLen,
rcvLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_FDT_POLL_READ_MAX);
/* T2T 1.0 5.2.1.7 The Reader/Writer SHALL treat a NACK in response to a READ Command as a Protocol Error */
if((ret == ERR_INCOMPLETE_BYTE) && (*rcvLen == RFAL_T2T_ACK_NACK_LEN) &&
((*rxBuf & RFAL_T2T_ACK_MASK) != RFAL_T2T_ACK)) {
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalT2TPollerWrite(uint8_t blockNum, const uint8_t* wrData) {
ReturnCode ret;
rfalT2TWriteReq req;
uint8_t res;
uint16_t rxLen;
req.code = (uint8_t)RFAL_T2T_CMD_WRITE;
req.blNo = blockNum;
ST_MEMCPY(req.data, wrData, RFAL_T2T_WRITE_DATA_LEN);
/* Transceive WRITE Command */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&req,
sizeof(rfalT2TWriteReq),
&res,
sizeof(uint8_t),
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_FDT_POLL_READ_MAX);
/* Check for a valid ACK */
if((ret == ERR_INCOMPLETE_BYTE) || (ret == ERR_NONE)) {
ret = ERR_PROTO;
if((rxLen == RFAL_T2T_ACK_NACK_LEN) && ((res & RFAL_T2T_ACK_MASK) == RFAL_T2T_ACK)) {
ret = ERR_NONE;
}
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalT2TPollerSectorSelect(uint8_t sectorNum) {
rfalT2TSectorSelectP1Req p1Req;
rfalT2TSectorSelectP2Req p2Req;
ReturnCode ret;
uint8_t res;
uint16_t rxLen;
/* Compute SECTOR SELECT Packet 1 */
p1Req.code = (uint8_t)RFAL_T2T_CMD_SECTOR_SELECT;
p1Req.byte2 = RFAL_T2T_SECTOR_SELECT_P1_BYTE2;
/* Transceive SECTOR SELECT Packet 1 */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&p1Req,
sizeof(rfalT2TSectorSelectP1Req),
&res,
sizeof(uint8_t),
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_FDT_POLL_SL_MAX);
/* Check and report any transmission error */
if((ret != ERR_INCOMPLETE_BYTE) && (ret != ERR_NONE)) {
return ret;
}
/* Ensure that an ACK was received */
if((ret != ERR_INCOMPLETE_BYTE) || (rxLen != RFAL_T2T_ACK_NACK_LEN) ||
((res & RFAL_T2T_ACK_MASK) != RFAL_T2T_ACK)) {
return ERR_PROTO;
}
/* Compute SECTOR SELECT Packet 2 */
p2Req.secNo = sectorNum;
ST_MEMSET(&p2Req.rfu, 0x00, RFAL_T2T_SECTOR_SELECT_P2_RFU_LEN);
/* Transceive SECTOR SELECT Packet 2 */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&p2Req,
sizeof(rfalT2TSectorSelectP2Req),
&res,
sizeof(uint8_t),
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_FDT_POLL_SL_MAX);
/* T2T 1.0 5.4.1.14 The Reader/Writer SHALL treat any response received before the end of PATT2T,SL,MAX as a Protocol Error */
if((ret == ERR_NONE) || (ret == ERR_INCOMPLETE_BYTE)) {
return ERR_PROTO;
}
/* T2T 1.0 5.4.1.13 The Reader/Writer SHALL treat the transmission of the SECTOR SELECT Command Packet 2 as being successful when it receives no response until PATT2T,SL,MAX. */
if(ret == ERR_TIMEOUT) {
return ERR_NONE;
}
return ret;
}
#endif /* RFAL_FEATURE_T2T */