505 lines
20 KiB
C
Executable File
505 lines
20 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_nfcb.c
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*
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* \author Gustavo Patricio
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*
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* \brief Implementation of NFC-B (ISO14443B) helpers
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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_nfcb.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_NFCB
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#define RFAL_FEATURE_NFCB false /* NFC-B module configuration missing. Disabled by default */
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#endif
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#if RFAL_FEATURE_NFCB
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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_NFCB_SENSB_REQ_EXT_SENSB_RES_SUPPORTED 0x10U /*!< Bit mask for Extended SensB Response support in SENSB_REQ */
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#define RFAL_NFCB_SENSB_RES_PROT_TYPE_RFU 0x08U /*!< Bit mask for Protocol Type RFU in SENSB_RES */
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#define RFAL_NFCB_SLOT_MARKER_SC_SHIFT 4U /*!< Slot Code position on SLOT_MARKER APn */
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#define RFAL_NFCB_SLOTMARKER_SLOTCODE_MIN 1U /*!< SLOT_MARKER Slot Code minimum Digital 1.1 Table 37 */
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#define RFAL_NFCB_SLOTMARKER_SLOTCODE_MAX 16U /*!< SLOT_MARKER Slot Code maximum Digital 1.1 Table 37 */
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#define RFAL_NFCB_ACTIVATION_FWT (RFAL_NFCB_FWTSENSB + RFAL_NFCB_DTPOLL_20) /*!< FWT(SENSB) + dTbPoll Digital 2.0 7.9.1.3 */
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/*! Advanced and Extended bit mask in Parameter of SENSB_REQ */
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#define RFAL_NFCB_SENSB_REQ_PARAM (RFAL_NFCB_SENSB_REQ_ADV_FEATURE | RFAL_NFCB_SENSB_REQ_EXT_SENSB_RES_SUPPORTED)
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/*! NFC-B commands definition */
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enum
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{
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RFAL_NFCB_CMD_SENSB_REQ = 0x05, /*!< SENSB_REQ (REQB) & SLOT_MARKER Digital 1.1 Table 24 */
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RFAL_NFCB_CMD_SENSB_RES = 0x50, /*!< SENSB_RES (ATQB) & SLOT_MARKER Digital 1.1 Table 27 */
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RFAL_NFCB_CMD_SLPB_REQ = 0x50, /*!< SLPB_REQ (HLTB command) Digital 1.1 Table 38 */
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RFAL_NFCB_CMD_SLPB_RES = 0x00 /*!< SLPB_RES (HLTB Answer) Digital 1.1 Table 39 */
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};
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/*
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******************************************************************************
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* GLOBAL MACROS
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******************************************************************************
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*/
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#define rfalNfcbNI2NumberOfSlots( ni ) (uint8_t)(1U << (ni)) /*!< Converts the Number of slots Identifier to slot number */
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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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/*! ALLB_REQ (WUPB) and SENSB_REQ (REQB) Command Format Digital 1.1 7.6.1 */
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typedef struct
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{
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uint8_t cmd; /*!< xxxxB_REQ: 05h */
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uint8_t AFI; /*!< NFC Identifier */
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uint8_t PARAM; /*!< Application Data */
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} rfalNfcbSensbReq;
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/*! SLOT_MARKER Command format Digital 1.1 7.7.1 */
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typedef struct
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{
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uint8_t APn; /*!< Slot number 2..16 | 0101b */
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} rfalNfcbSlotMarker;
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/*! SLPB_REQ (HLTB) Command Format Digital 1.1 7.8.1 */
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typedef struct
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{
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uint8_t cmd; /*!< SLPB_REQ: 50h */
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uint8_t nfcid0[RFAL_NFCB_NFCID0_LEN]; /*!< NFC Identifier (PUPI)*/
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} rfalNfcbSlpbReq;
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/*! SLPB_RES (HLTB) Response Format Digital 1.1 7.8.2 */
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typedef struct
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{
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uint8_t cmd; /*!< SLPB_RES: 00h */
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} rfalNfcbSlpbRes;
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/*! RFAL NFC-B instance */
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typedef struct
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{
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uint8_t AFI; /*!< AFI to be used */
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uint8_t PARAM; /*!< PARAM to be used */
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} rfalNfcb;
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/*
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******************************************************************************
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* LOCAL FUNCTION PROTOTYPES
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******************************************************************************
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*/
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static ReturnCode rfalNfcbCheckSensbRes( const rfalNfcbSensbRes *sensbRes, uint8_t sensbResLen );
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/*
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******************************************************************************
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* LOCAL VARIABLES
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******************************************************************************
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*/
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static rfalNfcb gRfalNfcb; /*!< RFAL NFC-B Instance */
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/*
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******************************************************************************
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* LOCAL FUNCTIONS
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******************************************************************************
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*/
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/*******************************************************************************/
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static ReturnCode rfalNfcbCheckSensbRes( const rfalNfcbSensbRes *sensbRes, uint8_t sensbResLen )
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{
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/* Check response length */
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if( ( (sensbResLen != RFAL_NFCB_SENSB_RES_LEN) && (sensbResLen != RFAL_NFCB_SENSB_RES_EXT_LEN) ) )
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{
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return ERR_PROTO;
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}
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/* Check SENSB_RES and Protocol Type Digital 1.1 7.6.2.19 */
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if( ((sensbRes->protInfo.FsciProType & RFAL_NFCB_SENSB_RES_PROT_TYPE_RFU) != 0U) || (sensbRes->cmd != (uint8_t)RFAL_NFCB_CMD_SENSB_RES) )
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{
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return ERR_PROTO;
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}
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return ERR_NONE;
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}
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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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/*******************************************************************************/
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ReturnCode rfalNfcbPollerInitialize( void )
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{
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ReturnCode ret;
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EXIT_ON_ERR( ret, rfalSetMode( RFAL_MODE_POLL_NFCB, RFAL_BR_106, RFAL_BR_106 ) );
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rfalSetErrorHandling( RFAL_ERRORHANDLING_NFC );
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rfalSetGT( RFAL_GT_NFCB );
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rfalSetFDTListen( RFAL_FDT_LISTEN_NFCB_POLLER );
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rfalSetFDTPoll( RFAL_FDT_POLL_NFCB_POLLER );
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gRfalNfcb.AFI = RFAL_NFCB_AFI;
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gRfalNfcb.PARAM = RFAL_NFCB_PARAM;
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode rfalNfcbPollerInitializeWithParams( uint8_t AFI, uint8_t PARAM )
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{
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ReturnCode ret;
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EXIT_ON_ERR( ret, rfalNfcbPollerInitialize() );
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gRfalNfcb.AFI = AFI;
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gRfalNfcb.PARAM = (PARAM & RFAL_NFCB_SENSB_REQ_PARAM);
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode rfalNfcbPollerCheckPresence( rfalNfcbSensCmd cmd, rfalNfcbSlots slots, rfalNfcbSensbRes *sensbRes, uint8_t *sensbResLen )
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{
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uint16_t rxLen;
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ReturnCode ret;
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rfalNfcbSensbReq sensbReq;
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/* Check if the command requested and given the slot number are valid */
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if( ((RFAL_NFCB_SENS_CMD_SENSB_REQ != cmd) && (RFAL_NFCB_SENS_CMD_ALLB_REQ != cmd)) ||
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(slots > RFAL_NFCB_SLOT_NUM_16) || (sensbRes == NULL) || (sensbResLen == NULL) )
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{
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return ERR_PARAM;
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}
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*sensbResLen = 0;
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ST_MEMSET(sensbRes, 0x00, sizeof(rfalNfcbSensbRes) );
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/* Compute SENSB_REQ */
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sensbReq.cmd = RFAL_NFCB_CMD_SENSB_REQ;
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sensbReq.AFI = gRfalNfcb.AFI;
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sensbReq.PARAM = (((uint8_t)gRfalNfcb.PARAM & RFAL_NFCB_SENSB_REQ_PARAM) | (uint8_t)cmd | (uint8_t)slots);
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/* Send SENSB_REQ and disable AGC to detect collisions */
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ret = rfalTransceiveBlockingTxRx( (uint8_t*)&sensbReq, sizeof(rfalNfcbSensbReq), (uint8_t*)sensbRes, sizeof(rfalNfcbSensbRes), &rxLen, RFAL_TXRX_FLAGS_DEFAULT, RFAL_NFCB_FWTSENSB );
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*sensbResLen = (uint8_t)rxLen;
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/* Check if a transmission error was detected */
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if( (ret == ERR_CRC) || (ret == ERR_FRAMING) )
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{
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/* Invalidate received frame as an error was detected (CollisionResolution checks if valid) */
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*sensbResLen = 0;
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return ERR_NONE;
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}
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if( ret == ERR_NONE )
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{
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return rfalNfcbCheckSensbRes( sensbRes, *sensbResLen );
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}
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return ret;
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}
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/*******************************************************************************/
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ReturnCode rfalNfcbPollerSleep( const uint8_t* nfcid0 )
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{
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uint16_t rxLen;
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ReturnCode ret;
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rfalNfcbSlpbReq slpbReq;
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rfalNfcbSlpbRes slpbRes;
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if( nfcid0 == NULL )
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{
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return ERR_PARAM;
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}
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/* Compute SLPB_REQ */
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slpbReq.cmd = RFAL_NFCB_CMD_SLPB_REQ;
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ST_MEMCPY( slpbReq.nfcid0, nfcid0, RFAL_NFCB_NFCID0_LEN );
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EXIT_ON_ERR( ret, rfalTransceiveBlockingTxRx( (uint8_t*)&slpbReq, sizeof(rfalNfcbSlpbReq), (uint8_t*)&slpbRes, sizeof(rfalNfcbSlpbRes), &rxLen, RFAL_TXRX_FLAGS_DEFAULT, RFAL_NFCB_ACTIVATION_FWT ));
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/* Check SLPB_RES */
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if( (rxLen != sizeof(rfalNfcbSlpbRes)) || (slpbRes.cmd != (uint8_t)RFAL_NFCB_CMD_SLPB_RES) )
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{
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return ERR_PROTO;
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode rfalNfcbPollerSlotMarker( uint8_t slotCode, rfalNfcbSensbRes *sensbRes, uint8_t *sensbResLen )
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{
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ReturnCode ret;
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rfalNfcbSlotMarker slotMarker;
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uint16_t rxLen;
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/* Check parameters */
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if( (sensbRes == NULL) || (sensbResLen == NULL) ||
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(slotCode < RFAL_NFCB_SLOTMARKER_SLOTCODE_MIN) ||
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(slotCode > RFAL_NFCB_SLOTMARKER_SLOTCODE_MAX) )
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{
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return ERR_PARAM;
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}
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/* Compose and send SLOT_MARKER with disabled AGC to detect collisions */
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slotMarker.APn = ((slotCode << RFAL_NFCB_SLOT_MARKER_SC_SHIFT) | (uint8_t)RFAL_NFCB_CMD_SENSB_REQ);
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ret = rfalTransceiveBlockingTxRx( (uint8_t*)&slotMarker, sizeof(rfalNfcbSlotMarker), (uint8_t*)sensbRes, sizeof(rfalNfcbSensbRes), &rxLen, RFAL_TXRX_FLAGS_DEFAULT, RFAL_NFCB_ACTIVATION_FWT );
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*sensbResLen = (uint8_t)rxLen;
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/* Check if a transmission error was detected */
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if( (ret == ERR_CRC) || (ret == ERR_FRAMING) )
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{
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return ERR_RF_COLLISION;
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}
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if( ret == ERR_NONE )
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{
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return rfalNfcbCheckSensbRes( sensbRes, *sensbResLen );
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}
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return ret;
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}
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ReturnCode rfalNfcbPollerTechnologyDetection( rfalComplianceMode compMode, rfalNfcbSensbRes *sensbRes, uint8_t *sensbResLen )
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{
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NO_WARNING(compMode);
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return rfalNfcbPollerCheckPresence( RFAL_NFCB_SENS_CMD_SENSB_REQ, RFAL_NFCB_SLOT_NUM_1, sensbRes, sensbResLen );
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}
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/*******************************************************************************/
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ReturnCode rfalNfcbPollerCollisionResolution( rfalComplianceMode compMode, uint8_t devLimit, rfalNfcbListenDevice *nfcbDevList, uint8_t *devCnt )
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{
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bool colPending; /* dummy */
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return rfalNfcbPollerSlottedCollisionResolution( compMode, devLimit, RFAL_NFCB_SLOT_NUM_1, RFAL_NFCB_SLOT_NUM_16, nfcbDevList, devCnt, &colPending );
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}
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/*******************************************************************************/
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ReturnCode rfalNfcbPollerSlottedCollisionResolution( rfalComplianceMode compMode, uint8_t devLimit, rfalNfcbSlots initSlots, rfalNfcbSlots endSlots, rfalNfcbListenDevice *nfcbDevList, uint8_t *devCnt, bool *colPending )
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{
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ReturnCode ret;
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uint8_t slotsNum;
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uint8_t slotCode;
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uint8_t curDevCnt;
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/* Check parameters. In ISO | Activity 1.0 mode the initial slots must be 1 as continuation of Technology Detection */
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if( (nfcbDevList == NULL) || (devCnt == NULL) || (colPending == NULL) || (initSlots > RFAL_NFCB_SLOT_NUM_16) ||
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(endSlots > RFAL_NFCB_SLOT_NUM_16) || ((compMode == RFAL_COMPLIANCE_MODE_ISO) && (initSlots != RFAL_NFCB_SLOT_NUM_1)) )
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{
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return ERR_PARAM;
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}
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/* Initialise as no error in case Activity 1.0 where the previous SENSB_RES from technology detection should be used */
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ret = ERR_NONE;
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*devCnt = 0;
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curDevCnt = 0;
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*colPending = false;
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/* Send ALLB_REQ Activity 1.1 9.3.5.2 and 9.3.5.3 (Symbol 1 and 2) */
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if( compMode != RFAL_COMPLIANCE_MODE_ISO )
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{
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ret = rfalNfcbPollerCheckPresence( RFAL_NFCB_SENS_CMD_ALLB_REQ, initSlots, &nfcbDevList->sensbRes, &nfcbDevList->sensbResLen );
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if( (ret != ERR_NONE) && (initSlots == RFAL_NFCB_SLOT_NUM_1) )
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{
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return ret;
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}
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}
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/* Check if there was a transmission error on WUPB EMVCo 2.6 9.3.3.1 */
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if( (compMode == RFAL_COMPLIANCE_MODE_EMV) && (nfcbDevList->sensbResLen == 0U) )
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{
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return ERR_FRAMING;
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}
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for( slotsNum = (uint8_t)initSlots; slotsNum <= (uint8_t)endSlots; slotsNum++ )
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{
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do {
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/* Activity 1.1 9.3.5.23 - Symbol 22 */
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if( (compMode == RFAL_COMPLIANCE_MODE_NFC) && (curDevCnt != 0U) )
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{
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rfalNfcbPollerSleep( nfcbDevList[((*devCnt) - (uint8_t)1U)].sensbRes.nfcid0 );
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nfcbDevList[((*devCnt) - (uint8_t)1U)].isSleep = true;
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}
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/* Send SENSB_REQ with number of slots if not the first Activity 1.1 9.3.5.24 - Symbol 23 */
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if( (slotsNum != (uint8_t)initSlots) || *colPending )
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{
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/* PRQA S 4342 1 # MISRA 10.5 - Layout of rfalNfcbSlots and above loop guarantee that no invalid enum values are created. */
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ret = rfalNfcbPollerCheckPresence( RFAL_NFCB_SENS_CMD_SENSB_REQ, (rfalNfcbSlots)slotsNum, &nfcbDevList[*devCnt].sensbRes, &nfcbDevList[*devCnt].sensbResLen );
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}
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/* Activity 1.1 9.3.5.6 - Symbol 5 */
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slotCode = 0;
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curDevCnt = 0;
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*colPending = false;
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do{
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/* Activity 1.1 9.3.5.26 - Symbol 25 */
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if( slotCode != 0U )
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{
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ret = rfalNfcbPollerSlotMarker( slotCode, &nfcbDevList[*devCnt].sensbRes, &nfcbDevList[*devCnt].sensbResLen );
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}
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/* Activity 1.1 9.3.5.7 and 9.3.5.8 - Symbol 6 */
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if( ret != ERR_TIMEOUT )
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{
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/* Activity 1.1 9.3.5.8 - Symbol 7 */
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if( (rfalNfcbCheckSensbRes( &nfcbDevList[*devCnt].sensbRes, nfcbDevList[*devCnt].sensbResLen) == ERR_NONE) && (ret == ERR_NONE) )
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{
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nfcbDevList[*devCnt].isSleep = false;
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if( compMode == RFAL_COMPLIANCE_MODE_EMV )
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{
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(*devCnt)++;
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return ret;
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}
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else if( compMode == RFAL_COMPLIANCE_MODE_ISO )
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{
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/* Activity 1.0 9.3.5.8 - Symbol 7 */
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(*devCnt)++;
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curDevCnt++;
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/* Activity 1.0 9.3.5.10 - Symbol 9 */
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if( (*devCnt >= devLimit) || (slotsNum == (uint8_t)RFAL_NFCB_SLOT_NUM_1) )
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{
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return ret;
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}
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/* Activity 1.0 9.3.5.11 - Symbol 10 */
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rfalNfcbPollerSleep( nfcbDevList[*devCnt-1U].sensbRes.nfcid0 );
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nfcbDevList[*devCnt-1U].isSleep = true;
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}
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else if( compMode == RFAL_COMPLIANCE_MODE_NFC )
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{
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/* Activity 1.1 9.3.5.10 and 9.3.5.11 - Symbol 9 and Symbol 11*/
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if(curDevCnt != 0U)
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{
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rfalNfcbPollerSleep( nfcbDevList[(*devCnt) - (uint8_t)1U].sensbRes.nfcid0 );
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nfcbDevList[(*devCnt) - (uint8_t)1U].isSleep = true;
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}
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/* Activity 1.1 9.3.5.12 - Symbol 11 */
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(*devCnt)++;
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curDevCnt++;
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/* Activity 1.1 9.3.5.6 - Symbol 13 */
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if( (*devCnt >= devLimit) || (slotsNum == (uint8_t)RFAL_NFCB_SLOT_NUM_1) )
|
|
{
|
|
return ret;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* MISRA 15.7 - Empty else */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* If deviceLimit is set to 0 the NFC Forum Device is configured to perform collision detection only Activity 1.0 and 1.1 9.3.5.5 - Symbol 4 */
|
|
if( (devLimit == 0U) && (slotsNum == (uint8_t)RFAL_NFCB_SLOT_NUM_1) )
|
|
{
|
|
return ERR_RF_COLLISION;
|
|
}
|
|
|
|
/* Activity 1.1 9.3.5.9 - Symbol 8 */
|
|
*colPending = true;
|
|
}
|
|
}
|
|
|
|
/* Activity 1.1 9.3.5.15 - Symbol 14 */
|
|
slotCode++;
|
|
}
|
|
while( slotCode < rfalNfcbNI2NumberOfSlots(slotsNum) );
|
|
|
|
/* Activity 1.1 9.3.5.17 - Symbol 16 */
|
|
if( !(*colPending) )
|
|
{
|
|
return ERR_NONE;
|
|
}
|
|
|
|
/* Activity 1.1 9.3.5.18 - Symbol 17 */
|
|
} while (curDevCnt != 0U); /* If a collision is detected and card(s) were found on this loop keep the same number of available slots */
|
|
}
|
|
|
|
return ERR_NONE;
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
uint32_t rfalNfcbTR2ToFDT( uint8_t tr2Code )
|
|
{
|
|
/*******************************************************************************/
|
|
/* MISRA 8.9 An object should be defined at block scope if its identifier only appears in a single function */
|
|
/*! TR2 Table according to Digital 1.1 Table 33 */
|
|
const uint16_t rfalNfcbTr2Table[] = { 1792, 3328, 5376, 9472 };
|
|
/*******************************************************************************/
|
|
|
|
return rfalNfcbTr2Table[ (tr2Code & RFAL_NFCB_SENSB_RES_PROTO_TR2_MASK) ];
|
|
}
|
|
|
|
#endif /* RFAL_FEATURE_NFCB */
|