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