/** ****************************************************************************** * * COPYRIGHT(c) 2020 STMicroelectronics * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /*! \file rfal_nfc.c * * \author Gustavo Patricio * * \brief RFAL NFC device * * This module provides the required features to behave as an NFC Poller * or Listener device. It grants an easy to use interface for the following * activities: Technology Detection, Collision Resollution, Activation, * Data Exchange, and Deactivation * * This layer is influenced by (but not fully aligned with) the NFC Forum * specifications, in particular: Activity 2.0 and NCI 2.0 * */ /* ****************************************************************************** * INCLUDES ****************************************************************************** */ #include "rfal_nfc.h" #include "utils.h" #include "rfal_analogConfig.h" /* ****************************************************************************** * GLOBAL DEFINES ****************************************************************************** */ #define RFAL_NFC_MAX_DEVICES 5U /* Max number of devices supported */ /* ****************************************************************************** * GLOBAL MACROS ****************************************************************************** */ #define rfalNfcNfcNotify( st ) if( gNfcDev.disc.notifyCb != NULL ) gNfcDev.disc.notifyCb( st ) /* ****************************************************************************** * GLOBAL TYPES ****************************************************************************** */ /*! Buffer union, only one interface is used at a time */ typedef union{ /* PRQA S 0750 # MISRA 19.2 - Members of the union will not be used concurrently, only one interface at a time */ rfalIsoDepBufFormat isoDepBuf; /*!< ISO-DEP buffer format (with header/prologue) */ rfalNfcDepBufFormat nfcDepBuf; /*!< NFC-DEP buffer format (with header/prologue) */ }rfalNfcTmpBuffer; typedef struct{ rfalNfcState state; /* Main state */ uint16_t techsFound; /* Technologies found bitmask */ uint16_t techs2do; /* Technologies still to be performed */ rfalBitRate ap2pBR; /* Bit rate to poll for AP2P */ uint8_t selDevIdx; /* Selected device index */ rfalNfcDevice *activeDev; /* Active device pointer */ rfalNfcDiscoverParam disc; /* Discovery parameters */ rfalNfcDevice devList[RFAL_NFC_MAX_DEVICES]; /*!< Location of device list */ uint8_t devCnt; /* Decices found counter */ uint32_t discTmr; /* Discovery Total duration timer */ ReturnCode dataExErr; /* Last Data Exchange error */ bool discRestart; /* Restart discover after deactivation flag */ bool isRxChaining; /* Flag indicating Other device is chaining */ uint32_t lmMask; /* Listen Mode mask */ bool isTechInit; /* Flag indicating technology has been set */ bool isOperOngoing; /* Flag indicating opration is ongoing */ rfalNfcBuffer txBuf; /* Tx buffer for Data Exchange */ rfalNfcBuffer rxBuf; /* Rx buffer for Data Exchange */ uint16_t rxLen; /* Length of received data on Data Exchange */ #if RFAL_FEATURE_NFC_DEP || RFAL_FEATURE_ISO_DEP rfalNfcTmpBuffer tmpBuf; /* Tmp buffer for Data Exchange */ #endif /* RFAL_FEATURE_NFC_DEP || RFAL_FEATURE_ISO_DEP */ }rfalNfc; /* ****************************************************************************** * LOCAL VARIABLES ****************************************************************************** */ #ifdef RFAL_TEST_MODE rfalNfc gNfcDev; #else /* RFAL_TEST_MODE */ static rfalNfc gNfcDev; #endif /* RFAL_TEST_MODE */ /* ****************************************************************************** * LOCAL FUNCTION PROTOTYPES ****************************************************************************** */ static ReturnCode rfalNfcPollTechDetetection( void ); static ReturnCode rfalNfcPollCollResolution( void ); static ReturnCode rfalNfcPollActivation( uint8_t devIt ); static ReturnCode rfalNfcDeactivation( void ); #if RFAL_FEATURE_NFC_DEP static ReturnCode rfalNfcNfcDepActivate( rfalNfcDevice *device, rfalNfcDepCommMode commMode, const uint8_t *atrReq, uint16_t atrReqLen ); #endif /* RFAL_FEATURE_NFC_DEP */ #if RFAL_FEATURE_LISTEN_MODE static ReturnCode rfalNfcListenActivation( void ); #endif /* RFAL_FEATURE_LISTEN_MODE*/ /*******************************************************************************/ ReturnCode rfalNfcInitialize( void ) { ReturnCode err; gNfcDev.state = RFAL_NFC_STATE_NOTINIT; rfalAnalogConfigInitialize(); /* Initialize RFAL's Analog Configs */ EXIT_ON_ERR( err, rfalInitialize() ); /* Initialize RFAL */ gNfcDev.state = RFAL_NFC_STATE_IDLE; /* Go to initialized */ return ERR_NONE; } /*******************************************************************************/ ReturnCode rfalNfcDiscover( const rfalNfcDiscoverParam *disParams ) { /* Check if initialization has been performed */ if( gNfcDev.state != RFAL_NFC_STATE_IDLE ) { return ERR_WRONG_STATE; } /* Check valid parameters */ if( (disParams == NULL) || (disParams->devLimit > RFAL_NFC_MAX_DEVICES) || (disParams->devLimit == 0U) || ( (disParams->maxBR > RFAL_BR_1695) && (disParams->maxBR != RFAL_BR_KEEP) ) || ( ((disParams->techs2Find & RFAL_NFC_POLL_TECH_F) != 0U) && (disParams->nfcfBR != RFAL_BR_212) && (disParams->nfcfBR != RFAL_BR_424) ) || ( (((disParams->techs2Find & RFAL_NFC_POLL_TECH_AP2P) != 0U) && (disParams->ap2pBR > RFAL_BR_424)) || (disParams->GBLen > RFAL_NFCDEP_GB_MAX_LEN) ) ) { return ERR_PARAM; } if( (((disParams->techs2Find & RFAL_NFC_POLL_TECH_A) != 0U) && !((bool)RFAL_FEATURE_NFCA)) || (((disParams->techs2Find & RFAL_NFC_POLL_TECH_B) != 0U) && !((bool)RFAL_FEATURE_NFCB)) || (((disParams->techs2Find & RFAL_NFC_POLL_TECH_F) != 0U) && !((bool)RFAL_FEATURE_NFCF)) || (((disParams->techs2Find & RFAL_NFC_POLL_TECH_V) != 0U) && !((bool)RFAL_FEATURE_NFCV)) || (((disParams->techs2Find & RFAL_NFC_POLL_TECH_ST25TB) != 0U) && !((bool)RFAL_FEATURE_ST25TB)) || (((disParams->techs2Find & RFAL_NFC_POLL_TECH_AP2P) != 0U) && !((bool)RFAL_FEATURE_NFC_DEP)) || (((disParams->techs2Find & RFAL_NFC_LISTEN_TECH_A) != 0U) && !((bool)RFAL_FEATURE_NFCA)) || (((disParams->techs2Find & RFAL_NFC_LISTEN_TECH_B) != 0U) && !((bool)RFAL_FEATURE_NFCB)) || (((disParams->techs2Find & RFAL_NFC_LISTEN_TECH_F) != 0U) && !((bool)RFAL_FEATURE_NFCF)) || (((disParams->techs2Find & RFAL_NFC_LISTEN_TECH_AP2P) != 0U) && !((bool)RFAL_FEATURE_NFC_DEP)) ) { return ERR_DISABLED; /* PRQA S 2880 # MISRA 2.1 - Unreachable code due to configuration option being set/unset */ } /* Initialize context for discovery */ gNfcDev.activeDev = NULL; gNfcDev.techsFound = RFAL_NFC_TECH_NONE; gNfcDev.devCnt = 0; gNfcDev.discRestart = true; gNfcDev.isTechInit = false; gNfcDev.disc = *disParams; /* Calculate Listen Mask */ gNfcDev.lmMask = 0U; gNfcDev.lmMask |= (((gNfcDev.disc.techs2Find & RFAL_NFC_LISTEN_TECH_A) != 0U) ? RFAL_LM_MASK_NFCA : 0U); gNfcDev.lmMask |= (((gNfcDev.disc.techs2Find & RFAL_NFC_LISTEN_TECH_B) != 0U) ? RFAL_LM_MASK_NFCB : 0U); gNfcDev.lmMask |= (((gNfcDev.disc.techs2Find & RFAL_NFC_LISTEN_TECH_F) != 0U) ? RFAL_LM_MASK_NFCF : 0U); gNfcDev.lmMask |= (((gNfcDev.disc.techs2Find & RFAL_NFC_LISTEN_TECH_AP2P) != 0U) ? RFAL_LM_MASK_ACTIVE_P2P : 0U); #if !RFAL_FEATURE_LISTEN_MODE /* Check if Listen Mode is supported/Enabled */ if( gNfcDev.lmMask != 0U ) { return ERR_DISABLED; } #endif gNfcDev.state = RFAL_NFC_STATE_START_DISCOVERY; return ERR_NONE; } /*******************************************************************************/ ReturnCode rfalNfcDeactivate( bool discovery ) { /* Check for valid state */ if( gNfcDev.state <= RFAL_NFC_STATE_IDLE ) { return ERR_WRONG_STATE; } /* Check if discovery is to continue afterwards */ if( (discovery == true) && (gNfcDev.disc.techs2Find != RFAL_NFC_TECH_NONE) ) { /* If so let the state machine continue*/ gNfcDev.discRestart = discovery; gNfcDev.state = RFAL_NFC_STATE_DEACTIVATION; } else { /* Otherwise deactivate immediately and go to IDLE */ rfalNfcDeactivation(); gNfcDev.state = RFAL_NFC_STATE_IDLE; } return ERR_NONE; } /*******************************************************************************/ ReturnCode rfalNfcSelect( uint8_t devIdx ) { /* Check for valid state */ if( gNfcDev.state != RFAL_NFC_STATE_POLL_SELECT ) { return ERR_WRONG_STATE; } gNfcDev.selDevIdx = devIdx; gNfcDev.state = RFAL_NFC_STATE_POLL_ACTIVATION; return ERR_NONE; } /*******************************************************************************/ rfalNfcState rfalNfcGetState( void ) { return gNfcDev.state; } /*******************************************************************************/ ReturnCode rfalNfcGetDevicesFound( rfalNfcDevice **devList, uint8_t *devCnt ) { /* Check for valid state */ if( gNfcDev.state < RFAL_NFC_STATE_POLL_SELECT ) { return ERR_WRONG_STATE; } /* Check valid parameters */ if( (devList == NULL) || (devCnt == NULL) ) { return ERR_PARAM; } *devCnt = gNfcDev.devCnt; *devList = gNfcDev.devList; return ERR_NONE; } /*******************************************************************************/ ReturnCode rfalNfcGetActiveDevice( rfalNfcDevice **dev ) { /* Check for valid state */ if( gNfcDev.state < RFAL_NFC_STATE_ACTIVATED ) { return ERR_WRONG_STATE; } /* Check valid parameter */ if( dev == NULL ) { return ERR_PARAM; } /* Check for valid state */ if( (gNfcDev.devCnt == 0U) || (gNfcDev.activeDev == NULL) ) { return ERR_REQUEST; } *dev = gNfcDev.activeDev; return ERR_NONE; } /*******************************************************************************/ void rfalNfcWorker( void ) { ReturnCode err; rfalWorker(); /* Execute RFAL process */ switch( gNfcDev.state ) { /*******************************************************************************/ case RFAL_NFC_STATE_NOTINIT: case RFAL_NFC_STATE_IDLE: break; /*******************************************************************************/ case RFAL_NFC_STATE_START_DISCOVERY: /* Initialize context for discovery cycle */ gNfcDev.devCnt = 0; gNfcDev.selDevIdx = 0; gNfcDev.techsFound = RFAL_NFC_TECH_NONE; gNfcDev.techs2do = gNfcDev.disc.techs2Find; gNfcDev.state = RFAL_NFC_STATE_POLL_TECHDETECT; #if RFAL_FEATURE_WAKEUP_MODE /* Check if Low power Wake-Up is to be performed */ if( gNfcDev.disc.wakeupEnabled ) { /* Initialize Low power Wake-up mode and wait */ err = rfalWakeUpModeStart( (gNfcDev.disc.wakeupConfigDefault ? NULL : &gNfcDev.disc.wakeupConfig) ); if( err == ERR_NONE ) { gNfcDev.state = RFAL_NFC_STATE_WAKEUP_MODE; rfalNfcNfcNotify( gNfcDev.state ); /* Notify caller that WU was started */ } } #endif /* RFAL_FEATURE_WAKEUP_MODE */ break; /*******************************************************************************/ case RFAL_NFC_STATE_WAKEUP_MODE: #if RFAL_FEATURE_WAKEUP_MODE /* Check if the Wake-up mode has woke */ if( rfalWakeUpModeHasWoke() ) { rfalWakeUpModeStop(); /* Disable Wake-up mode */ gNfcDev.state = RFAL_NFC_STATE_POLL_TECHDETECT; /* Go to Technology detection */ rfalNfcNfcNotify( gNfcDev.state ); /* Notify caller that WU has woke */ } #endif /* RFAL_FEATURE_WAKEUP_MODE */ break; /*******************************************************************************/ case RFAL_NFC_STATE_POLL_TECHDETECT: /* Start total duration timer */ platformTimerDestroy( gNfcDev.discTmr ); gNfcDev.discTmr = (uint32_t)platformTimerCreate( gNfcDev.disc.totalDuration ); err = rfalNfcPollTechDetetection(); /* Perform Technology Detection */ if( err != ERR_BUSY ) /* Wait until all technologies are performed */ { if( ( err != ERR_NONE) || (gNfcDev.techsFound == RFAL_NFC_TECH_NONE) )/* Check if any error occurred or no techs were found */ { rfalFieldOff(); gNfcDev.state = RFAL_NFC_STATE_LISTEN_TECHDETECT; /* Nothing found as poller, go to listener */ break; } gNfcDev.techs2do = gNfcDev.techsFound; /* Store the found technologies for collision resolution */ gNfcDev.state = RFAL_NFC_STATE_POLL_COLAVOIDANCE; /* One or more devices found, go to Collision Avoidance */ } break; /*******************************************************************************/ case RFAL_NFC_STATE_POLL_COLAVOIDANCE: err = rfalNfcPollCollResolution(); /* Resolve any eventual collision */ if( err != ERR_BUSY ) /* Wait until all technologies are performed */ { if( (err != ERR_NONE) || (gNfcDev.devCnt == 0U) ) /* Check if any error occurred or no devices were found */ { gNfcDev.state = RFAL_NFC_STATE_DEACTIVATION; break; /* Unable to retrieve any device, restart loop */ } /* Check if more than one device has been found */ if( gNfcDev.devCnt > 1U ) { /* If more than one device was found inform upper layer to choose which one to activate */ if( gNfcDev.disc.notifyCb != NULL ) { gNfcDev.state = RFAL_NFC_STATE_POLL_SELECT; gNfcDev.disc.notifyCb( gNfcDev.state ); break; } } /* If only one device or no callback has been set, activate the first device found */ gNfcDev.selDevIdx = 0U; gNfcDev.state = RFAL_NFC_STATE_POLL_ACTIVATION; } break; /*******************************************************************************/ case RFAL_NFC_STATE_POLL_ACTIVATION: err = rfalNfcPollActivation( gNfcDev.selDevIdx ); if( err != ERR_BUSY ) /* Wait until all Activation is complete */ { if( err != ERR_NONE ) /* Activation failed selected device */ { gNfcDev.state = RFAL_NFC_STATE_DEACTIVATION; /* If Activation failed, restart loop */ break; } gNfcDev.state = RFAL_NFC_STATE_ACTIVATED; /* Device has been properly activated */ rfalNfcNfcNotify( gNfcDev.state ); /* Inform upper layer that a device has been activated */ } break; /*******************************************************************************/ case RFAL_NFC_STATE_DATAEXCHANGE: rfalNfcDataExchangeGetStatus(); /* Run the internal state machine */ if( gNfcDev.dataExErr != ERR_BUSY ) /* If Dataexchange has terminated */ { gNfcDev.state = RFAL_NFC_STATE_DATAEXCHANGE_DONE; /* Go to done state */ rfalNfcNfcNotify( gNfcDev.state ); /* And notify caller */ } if( gNfcDev.dataExErr == ERR_SLEEP_REQ ) /* Check if Listen mode has to go to Sleep */ { gNfcDev.state = RFAL_NFC_STATE_LISTEN_SLEEP; /* Go to Listen Sleep state */ rfalNfcNfcNotify( gNfcDev.state ); /* And notify caller */ } break; /*******************************************************************************/ case RFAL_NFC_STATE_DEACTIVATION: rfalNfcDeactivation(); /* Deactivate current device */ gNfcDev.state = ((gNfcDev.discRestart) ? RFAL_NFC_STATE_START_DISCOVERY : RFAL_NFC_STATE_IDLE); rfalNfcNfcNotify( gNfcDev.state ); /* Notify caller */ break; /*******************************************************************************/ case RFAL_NFC_STATE_LISTEN_TECHDETECT: if( platformTimerIsExpired( gNfcDev.discTmr ) ) { #if RFAL_FEATURE_LISTEN_MODE rfalListenStop(); #else rfalFieldOff(); #endif /* RFAL_FEATURE_LISTEN_MODE */ gNfcDev.state = RFAL_NFC_STATE_START_DISCOVERY; /* Restart the discovery loop */ rfalNfcNfcNotify( gNfcDev.state ); /* Notify caller */ break; } #if RFAL_FEATURE_LISTEN_MODE if( gNfcDev.lmMask != 0U ) /* Check if configured to perform Listen mode */ { err = rfalListenStart( gNfcDev.lmMask, &gNfcDev.disc.lmConfigPA, NULL, &gNfcDev.disc.lmConfigPF, (uint8_t*)&gNfcDev.rxBuf.rfBuf, (uint16_t)rfalConvBytesToBits(sizeof(gNfcDev.rxBuf.rfBuf)), &gNfcDev.rxLen ); if( err == ERR_NONE ) { gNfcDev.state = RFAL_NFC_STATE_LISTEN_COLAVOIDANCE; /* Wait for listen mode to be activated */ } } break; /*******************************************************************************/ case RFAL_NFC_STATE_LISTEN_COLAVOIDANCE: if( platformTimerIsExpired( gNfcDev.discTmr ) ) /* Check if the total duration has been reached */ { rfalListenStop(); gNfcDev.state = RFAL_NFC_STATE_START_DISCOVERY; /* Restart the discovery loop */ rfalNfcNfcNotify( gNfcDev.state ); /* Notify caller */ break; } /* Check for external field */ if( rfalListenGetState( NULL, NULL ) >= RFAL_LM_STATE_IDLE ) { gNfcDev.state = RFAL_NFC_STATE_LISTEN_ACTIVATION; /* Wait for listen mode to be activated */ } break; /*******************************************************************************/ case RFAL_NFC_STATE_LISTEN_ACTIVATION: case RFAL_NFC_STATE_LISTEN_SLEEP: err = rfalNfcListenActivation(); if( err != ERR_BUSY ) { if( err == ERR_NONE ) { gNfcDev.activeDev = gNfcDev.devList; /* Assign the active device to be used further on */ gNfcDev.devCnt++; gNfcDev.state = RFAL_NFC_STATE_ACTIVATED; /* Device has been properly activated */ rfalNfcNfcNotify( gNfcDev.state ); /* Inform upper layer that a device has been activated */ } else { rfalListenStop(); gNfcDev.state = RFAL_NFC_STATE_START_DISCOVERY; /* Restart the discovery loop */ rfalNfcNfcNotify( gNfcDev.state ); /* Notify caller */ } } #endif /* RFAL_FEATURE_LISTEN_MODE */ break; /*******************************************************************************/ case RFAL_NFC_STATE_ACTIVATED: case RFAL_NFC_STATE_POLL_SELECT: case RFAL_NFC_STATE_DATAEXCHANGE_DONE: default: return; } } /*******************************************************************************/ ReturnCode rfalNfcDataExchangeStart( uint8_t *txData, uint16_t txDataLen, uint8_t **rxData, uint16_t **rvdLen, uint32_t fwt, uint32_t flags) { ReturnCode err; rfalTransceiveContext ctx; /*******************************************************************************/ /* The Data Exchange is divided in two different moments, the trigger/Start of * * the transfer followed by the check until its completion */ if( (gNfcDev.state >= RFAL_NFC_STATE_ACTIVATED) && (gNfcDev.activeDev != NULL) ) { /*******************************************************************************/ /* In Listen mode is the Poller that initiates the communicatation */ /* Assign output parameters and rfalNfcDataExchangeGetStatus will return */ /* incoming data from Poller/Initiator */ if( (gNfcDev.state == RFAL_NFC_STATE_ACTIVATED) && rfalNfcIsRemDevPoller( gNfcDev.activeDev->type ) ) { if( txDataLen > 0U ) { return ERR_WRONG_STATE; } *rvdLen = (uint16_t*)&gNfcDev.rxLen; *rxData = (uint8_t*)( (gNfcDev.activeDev->rfInterface == RFAL_NFC_INTERFACE_ISODEP) ? gNfcDev.rxBuf.isoDepBuf.apdu : ((gNfcDev.activeDev->rfInterface == RFAL_NFC_INTERFACE_NFCDEP) ? gNfcDev.rxBuf.nfcDepBuf.pdu : gNfcDev.rxBuf.rfBuf)); if(gNfcDev.disc.activate_after_sak) { gNfcDev.state = RFAL_NFC_STATE_DATAEXCHANGE_DONE; } return ERR_NONE; } /*******************************************************************************/ switch( gNfcDev.activeDev->rfInterface ) /* Check which RF interface shall be used/has been activated */ { /*******************************************************************************/ case RFAL_NFC_INTERFACE_RF: rfalCreateByteFlagsTxRxContext( ctx, (uint8_t*)txData, txDataLen, gNfcDev.rxBuf.rfBuf, sizeof(gNfcDev.rxBuf.rfBuf), &gNfcDev.rxLen, flags, fwt ); if(flags == RFAL_TXRX_FLAGS_RAW) { ctx.txBufLen = txDataLen; } *rxData = (uint8_t*)gNfcDev.rxBuf.rfBuf; *rvdLen = (uint16_t*)&gNfcDev.rxLen; err = rfalStartTransceive( &ctx ); break; #if RFAL_FEATURE_ISO_DEP /*******************************************************************************/ case RFAL_NFC_INTERFACE_ISODEP: { rfalIsoDepApduTxRxParam isoDepTxRx; if( txDataLen > sizeof(gNfcDev.txBuf.isoDepBuf.apdu) ) { return ERR_NOMEM; } if( txDataLen > 0U ) { ST_MEMCPY( (uint8_t*)gNfcDev.txBuf.isoDepBuf.apdu, txData, txDataLen ); } isoDepTxRx.DID = RFAL_ISODEP_NO_DID; isoDepTxRx.ourFSx = RFAL_ISODEP_FSX_KEEP; isoDepTxRx.FSx = gNfcDev.activeDev->proto.isoDep.info.FSx; isoDepTxRx.dFWT = gNfcDev.activeDev->proto.isoDep.info.dFWT; isoDepTxRx.FWT = gNfcDev.activeDev->proto.isoDep.info.FWT; isoDepTxRx.txBuf = &gNfcDev.txBuf.isoDepBuf; isoDepTxRx.txBufLen = txDataLen; isoDepTxRx.rxBuf = &gNfcDev.rxBuf.isoDepBuf; isoDepTxRx.rxLen = &gNfcDev.rxLen; isoDepTxRx.tmpBuf = &gNfcDev.tmpBuf.isoDepBuf; *rxData = (uint8_t*)gNfcDev.rxBuf.isoDepBuf.apdu; *rvdLen = (uint16_t*)&gNfcDev.rxLen; /*******************************************************************************/ /* Trigger a RFAL ISO-DEP Transceive */ err = rfalIsoDepStartApduTransceive( isoDepTxRx ); break; } #endif /* RFAL_FEATURE_ISO_DEP */ #if RFAL_FEATURE_NFC_DEP /*******************************************************************************/ case RFAL_NFC_INTERFACE_NFCDEP: { rfalNfcDepPduTxRxParam nfcDepTxRx; if( txDataLen > sizeof(gNfcDev.txBuf.nfcDepBuf.pdu) ) { return ERR_NOMEM; } if( txDataLen > 0U) { ST_MEMCPY( (uint8_t*)gNfcDev.txBuf.nfcDepBuf.pdu, txData, txDataLen ); } nfcDepTxRx.DID = RFAL_NFCDEP_DID_KEEP; nfcDepTxRx.FSx = rfalNfcIsRemDevListener(gNfcDev.activeDev->type) ? rfalNfcDepLR2FS( (uint8_t)rfalNfcDepPP2LR( gNfcDev.activeDev->proto.nfcDep.activation.Target.ATR_RES.PPt ) ) : rfalNfcDepLR2FS( (uint8_t)rfalNfcDepPP2LR( gNfcDev.activeDev->proto.nfcDep.activation.Initiator.ATR_REQ.PPi ) ); nfcDepTxRx.dFWT = gNfcDev.activeDev->proto.nfcDep.info.dFWT; nfcDepTxRx.FWT = gNfcDev.activeDev->proto.nfcDep.info.FWT; nfcDepTxRx.txBuf = &gNfcDev.txBuf.nfcDepBuf; nfcDepTxRx.txBufLen = txDataLen; nfcDepTxRx.rxBuf = &gNfcDev.rxBuf.nfcDepBuf; nfcDepTxRx.rxLen = &gNfcDev.rxLen; nfcDepTxRx.tmpBuf = &gNfcDev.tmpBuf.nfcDepBuf; *rxData = (uint8_t*)gNfcDev.rxBuf.nfcDepBuf.pdu; *rvdLen = (uint16_t*)&gNfcDev.rxLen; /*******************************************************************************/ /* Trigger a RFAL NFC-DEP Transceive */ err = rfalNfcDepStartPduTransceive( nfcDepTxRx ); break; } #endif /* RFAL_FEATURE_NFC_DEP */ /*******************************************************************************/ default: err = ERR_PARAM; break; } /* If a transceive has succesfully started flag Data Exchange as ongoing */ if( err == ERR_NONE ) { gNfcDev.dataExErr = ERR_BUSY; gNfcDev.state = RFAL_NFC_STATE_DATAEXCHANGE; } return err; } return ERR_WRONG_STATE; } /*******************************************************************************/ ReturnCode rfalNfcDataExchangeGetStatus( void ) { /*******************************************************************************/ /* Check if it's the first frame received in Listen mode */ if( gNfcDev.state == RFAL_NFC_STATE_ACTIVATED ) { /* Continue data exchange as normal */ gNfcDev.dataExErr = ERR_BUSY; gNfcDev.state = RFAL_NFC_STATE_DATAEXCHANGE; /* Check if we performing in T3T CE */ if( (gNfcDev.activeDev->type == RFAL_NFC_POLL_TYPE_NFCF) && (gNfcDev.activeDev->rfInterface == RFAL_NFC_INTERFACE_RF) ) { /* The first frame has been retrieved by rfalListenMode, flag data immediately */ /* Can only call rfalGetTransceiveStatus() after starting a transceive with rfalStartTransceive */ gNfcDev.dataExErr = ERR_NONE; } } /*******************************************************************************/ /* Check if we are in we have been placed to sleep, and return last error */ if( gNfcDev.state == RFAL_NFC_STATE_LISTEN_SLEEP ) { return gNfcDev.dataExErr; /* ERR_SLEEP_REQ */ } /*******************************************************************************/ /* Check if Data exchange has been started */ if( (gNfcDev.state != RFAL_NFC_STATE_DATAEXCHANGE) && (gNfcDev.state != RFAL_NFC_STATE_DATAEXCHANGE_DONE) ) { return ERR_WRONG_STATE; } /* Check if Data exchange is still ongoing */ if( gNfcDev.dataExErr == ERR_BUSY ) { switch( gNfcDev.activeDev->rfInterface ) { /*******************************************************************************/ case RFAL_NFC_INTERFACE_RF: gNfcDev.dataExErr = rfalGetTransceiveStatus(); break; #if RFAL_FEATURE_ISO_DEP /*******************************************************************************/ case RFAL_NFC_INTERFACE_ISODEP: gNfcDev.dataExErr = rfalIsoDepGetApduTransceiveStatus(); break; #endif /* RFAL_FEATURE_ISO_DEP */ /*******************************************************************************/ #if RFAL_FEATURE_NFC_DEP case RFAL_NFC_INTERFACE_NFCDEP: gNfcDev.dataExErr = rfalNfcDepGetPduTransceiveStatus(); break; #endif /* RFAL_FEATURE_NFC_DEP */ /*******************************************************************************/ default: gNfcDev.dataExErr = ERR_PARAM; break; } #if RFAL_FEATURE_LISTEN_MODE /*******************************************************************************/ /* If a Sleep request has been received (Listen Mode) go to sleep immediately */ if( gNfcDev.dataExErr == ERR_SLEEP_REQ ) { EXIT_ON_ERR( gNfcDev.dataExErr, rfalListenSleepStart( RFAL_LM_STATE_SLEEP_A, gNfcDev.rxBuf.rfBuf, sizeof(gNfcDev.rxBuf.rfBuf), &gNfcDev.rxLen ) ); /* If set Sleep was succesfull keep restore the Sleep request signal */ gNfcDev.dataExErr = ERR_SLEEP_REQ; } #endif /* RFAL_FEATURE_LISTEN_MODE */ } return gNfcDev.dataExErr; } /*! ****************************************************************************** * \brief Poller Technology Detection * * This method implements the Technology Detection / Poll for different * device technologies. * * \return ERR_NONE : Operation completed with no error * \return ERR_BUSY : Operation ongoing * \return ERR_XXXX : Error occurred * ****************************************************************************** */ static ReturnCode rfalNfcPollTechDetetection( void ) { ReturnCode err; err = ERR_NONE; /* Supress warning when specific RFAL features have been disabled */ NO_WARNING(err); /*******************************************************************************/ /* AP2P Technology Detection */ /*******************************************************************************/ if( ((gNfcDev.disc.techs2Find & RFAL_NFC_POLL_TECH_AP2P) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_AP2P) != 0U) ) { #if RFAL_FEATURE_NFC_DEP if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalSetMode( RFAL_MODE_POLL_ACTIVE_P2P, gNfcDev.disc.ap2pBR, gNfcDev.disc.ap2pBR ) ); rfalSetErrorHandling( RFAL_ERRORHANDLING_NFC ); rfalSetFDTListen( RFAL_FDT_LISTEN_AP2P_POLLER ); rfalSetFDTPoll( RFAL_TIMING_NONE ); rfalSetGT( RFAL_GT_AP2P_ADJUSTED ); EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* Turns the Field On and starts GT timer */ gNfcDev.isTechInit = true; } if( rfalIsGTExpired() ) /* Wait until Guard Time is fulfilled */ { gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_AP2P; err = rfalNfcNfcDepActivate( gNfcDev.devList, RFAL_NFCDEP_COMM_ACTIVE, NULL, 0 );/* Poll for NFC-A devices */ if( err == ERR_NONE ) { gNfcDev.techsFound |= RFAL_NFC_POLL_TECH_AP2P; gNfcDev.devList->type = RFAL_NFC_LISTEN_TYPE_AP2P; gNfcDev.devList->rfInterface = RFAL_NFC_INTERFACE_NFCDEP; gNfcDev.devCnt++; return ERR_NONE; } gNfcDev.isTechInit = false; rfalFieldOff(); } return ERR_BUSY; #endif /* RFAL_FEATURE_NFC_DEP */ } /*******************************************************************************/ /* Passive NFC-A Technology Detection */ /*******************************************************************************/ if( ((gNfcDev.disc.techs2Find & RFAL_NFC_POLL_TECH_A) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_A) != 0U) ) { #if RFAL_FEATURE_NFCA rfalNfcaSensRes sensRes; if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalNfcaPollerInitialize() ); /* Initialize RFAL for NFC-A */ EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* Turns the Field On and starts GT timer */ gNfcDev.isTechInit = true; } if( rfalIsGTExpired() ) /* Wait until Guard Time is fulfilled */ { err = rfalNfcaPollerTechnologyDetection( gNfcDev.disc.compMode, &sensRes );/* Poll for NFC-A devices */ if( err == ERR_NONE ) { gNfcDev.techsFound |= RFAL_NFC_POLL_TECH_A; } gNfcDev.isTechInit = false; gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_A; } return ERR_BUSY; #endif /* RFAL_FEATURE_NFCA */ } /*******************************************************************************/ /* Passive NFC-B Technology Detection */ /*******************************************************************************/ if( ((gNfcDev.disc.techs2Find & RFAL_NFC_POLL_TECH_B) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_B) != 0U) ) { #if RFAL_FEATURE_NFCB rfalNfcbSensbRes sensbRes; uint8_t sensbResLen; if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalNfcbPollerInitialize() ); /* Initialize RFAL for NFC-B */ EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* As field is already On only starts GT timer */ gNfcDev.isTechInit = true; } if( rfalIsGTExpired() ) /* Wait until Guard Time is fulfilled */ { err = rfalNfcbPollerTechnologyDetection( gNfcDev.disc.compMode, &sensbRes, &sensbResLen ); /* Poll for NFC-B devices */ if( err == ERR_NONE ) { gNfcDev.techsFound |= RFAL_NFC_POLL_TECH_B; } gNfcDev.isTechInit = false; gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_B; } return ERR_BUSY; #endif /* RFAL_FEATURE_NFCB */ } /*******************************************************************************/ /* Passive NFC-F Technology Detection */ /*******************************************************************************/ if( ((gNfcDev.disc.techs2Find & RFAL_NFC_POLL_TECH_F) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_F) != 0U) ) { #if RFAL_FEATURE_NFCF if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalNfcfPollerInitialize( gNfcDev.disc.nfcfBR ) ); /* Initialize RFAL for NFC-F */ EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* As field is already On only starts GT timer */ gNfcDev.isTechInit = true; } if( rfalIsGTExpired() ) /* Wait until Guard Time is fulfilled */ { err = rfalNfcfPollerCheckPresence(); /* Poll for NFC-F devices */ if( err == ERR_NONE ) { gNfcDev.techsFound |= RFAL_NFC_POLL_TECH_F; } gNfcDev.isTechInit = false; gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_F; } return ERR_BUSY; #endif /* RFAL_FEATURE_NFCF */ } /*******************************************************************************/ /* Passive NFC-V Technology Detection */ /*******************************************************************************/ if( ((gNfcDev.disc.techs2Find & RFAL_NFC_POLL_TECH_V) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_V) != 0U) ) { #if RFAL_FEATURE_NFCV rfalNfcvInventoryRes invRes; if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalNfcvPollerInitialize() ); /* Initialize RFAL for NFC-V */ EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* As field is already On only starts GT timer */ gNfcDev.isTechInit = true; } if( rfalIsGTExpired() ) /* Wait until Guard Time is fulfilled */ { err = rfalNfcvPollerCheckPresence( &invRes ); /* Poll for NFC-V devices */ if( err == ERR_NONE ) { gNfcDev.techsFound |= RFAL_NFC_POLL_TECH_V; } gNfcDev.isTechInit = false; gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_V; } return ERR_BUSY; #endif /* RFAL_FEATURE_NFCV */ } /*******************************************************************************/ /* Passive Proprietary Technology ST25TB */ /*******************************************************************************/ if( ((gNfcDev.disc.techs2Find & RFAL_NFC_POLL_TECH_ST25TB) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_ST25TB) != 0U) ) { #if RFAL_FEATURE_ST25TB if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalSt25tbPollerInitialize() ); /* Initialize RFAL for NFC-V */ EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* As field is already On only starts GT timer */ gNfcDev.isTechInit = true; } if( rfalIsGTExpired() ) /* Wait until Guard Time is fulfilled */ { err = rfalSt25tbPollerCheckPresence( NULL ); /* Poll for ST25TB devices */ if( err == ERR_NONE ) { gNfcDev.techsFound |= RFAL_NFC_POLL_TECH_ST25TB; } gNfcDev.isTechInit = false; gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_ST25TB; } return ERR_BUSY; #endif /* RFAL_FEATURE_ST25TB */ } return ERR_NONE; } /*! ****************************************************************************** * \brief Poller Collision Resolution * * This method implements the Collision Resolution on all technologies that * have been detected before. * * \return ERR_NONE : Operation completed with no error * \return ERR_BUSY : Operation ongoing * \return ERR_XXXX : Error occurred * ****************************************************************************** */ static ReturnCode rfalNfcPollCollResolution( void ) { uint8_t i; static uint8_t devCnt; ReturnCode err; err = ERR_NONE; i = 0; /* Supress warning when specific RFAL features have been disabled */ NO_WARNING(err); NO_WARNING(devCnt); NO_WARNING(i); /* Check if device limit has been reached */ if( gNfcDev.devCnt >= gNfcDev.disc.devLimit ) { return ERR_NONE; } /*******************************************************************************/ /* NFC-A Collision Resolution */ /*******************************************************************************/ #if RFAL_FEATURE_NFCA if( ((gNfcDev.techsFound & RFAL_NFC_POLL_TECH_A) != 0U) && ((gNfcDev.techs2do & RFAL_NFC_POLL_TECH_A) != 0U) ) /* If a NFC-A device was found/detected, perform Collision Resolution */ { static rfalNfcaListenDevice nfcaDevList[RFAL_NFC_MAX_DEVICES]; if( !gNfcDev.isTechInit ) { EXIT_ON_ERR( err, rfalNfcaPollerInitialize() ); /* Initialize RFAL for NFC-A */ EXIT_ON_ERR( err, rfalFieldOnAndStartGT() ); /* Turns the Field On and starts GT timer */ gNfcDev.isTechInit = true; /* Technology has been initialized */ gNfcDev.isOperOngoing = false; /* No operation currently ongoing */ } if( !rfalIsGTExpired() ) { return ERR_BUSY; } if( !gNfcDev.isOperOngoing ) { EXIT_ON_ERR( err, rfalNfcaPollerStartFullCollisionResolution( gNfcDev.disc.compMode, (gNfcDev.disc.devLimit - gNfcDev.devCnt), nfcaDevList, &devCnt ) ); gNfcDev.isOperOngoing = true; return ERR_BUSY; } err = rfalNfcaPollerGetFullCollisionResolutionStatus(); if( err != ERR_BUSY ) { gNfcDev.isTechInit = false; gNfcDev.techs2do &= ~RFAL_NFC_POLL_TECH_A; if( (err == ERR_NONE) && (devCnt != 0U) ) { for( i=0; i gNfcDev.devCnt ) { return ERR_WRONG_STATE; } switch( gNfcDev.devList[devIt].type ) { /*******************************************************************************/ /* AP2P Activation */ /*******************************************************************************/ #if RFAL_FEATURE_NFC_DEP case RFAL_NFC_LISTEN_TYPE_AP2P: /* Activation has already been perfomed (ATR_REQ) */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].proto.nfcDep.activation.Target.ATR_RES.NFCID3; gNfcDev.devList[devIt].nfcidLen = RFAL_NFCDEP_NFCID3_LEN; break; #endif /* RFAL_FEATURE_NFC_DEP */ /*******************************************************************************/ /* Passive NFC-A Activation */ /*******************************************************************************/ #if RFAL_FEATURE_NFCA case RFAL_NFC_LISTEN_TYPE_NFCA: if( !gNfcDev.isTechInit ) { rfalNfcaPollerInitialize(); gNfcDev.isTechInit = true; gNfcDev.isOperOngoing = false; return ERR_BUSY; } if( gNfcDev.devList[devIt].dev.nfca.isSleep ) /* Check if desired device is in Sleep */ { rfalNfcaSensRes sensRes; rfalNfcaSelRes selRes; if( !gNfcDev.isOperOngoing ) { /* Wake up all cards */ EXIT_ON_ERR( err, rfalNfcaPollerCheckPresence( RFAL_14443A_SHORTFRAME_CMD_WUPA, &sensRes ) ); gNfcDev.isOperOngoing = true; } else { /* Select specific device */ EXIT_ON_ERR( err, rfalNfcaPollerSelect( gNfcDev.devList[devIt].dev.nfca.nfcId1, gNfcDev.devList[devIt].dev.nfca.nfcId1Len, &selRes ) ); gNfcDev.devList[devIt].dev.nfca.isSleep = false; gNfcDev.isOperOngoing = false; } return ERR_BUSY; } /* Set NFCID */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].dev.nfca.nfcId1; gNfcDev.devList[devIt].nfcidLen = gNfcDev.devList[devIt].dev.nfca.nfcId1Len; /*******************************************************************************/ /* Perform protocol specific activation */ switch( gNfcDev.devList[devIt].dev.nfca.type ) { /*******************************************************************************/ case RFAL_NFCA_T1T: /* No further activation needed for T1T (RID already performed) */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].dev.nfca.ridRes.uid; gNfcDev.devList[devIt].nfcidLen = RFAL_T1T_UID_LEN; gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; break; case RFAL_NFCA_T2T: /* No further activation needed for a T2T */ gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; break; /*******************************************************************************/ case RFAL_NFCA_T4T: /* Device supports ISO-DEP */ #if RFAL_FEATURE_ISO_DEP && RFAL_FEATURE_ISO_DEP_POLL if( !gNfcDev.isOperOngoing ) { /* Perform ISO-DEP (ISO14443-4) activation: RATS and PPS if supported */ rfalIsoDepInitialize(); EXIT_ON_ERR( err, rfalIsoDepPollAStartActivation( (rfalIsoDepFSxI)RFAL_ISODEP_FSDI_DEFAULT, RFAL_ISODEP_NO_DID, gNfcDev.disc.maxBR, &gNfcDev.devList[devIt].proto.isoDep ) ); gNfcDev.isOperOngoing = true; return ERR_BUSY; } err = rfalIsoDepPollAGetActivationStatus(); if( err != ERR_NONE ) { return err; } gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_ISODEP; /* NFC-A T4T device activated */ #else gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; /* No ISO-DEP supported activate using RF interface */ #endif /* RFAL_FEATURE_ISO_DEP_POLL */ break; /*******************************************************************************/ case RFAL_NFCA_T4T_NFCDEP: /* Device supports both T4T and NFC-DEP */ case RFAL_NFCA_NFCDEP: /* Device supports NFC-DEP */ #if RFAL_FEATURE_NFC_DEP /* Perform NFC-DEP (P2P) activation: ATR and PSL if supported */ EXIT_ON_ERR( err, rfalNfcNfcDepActivate( &gNfcDev.devList[devIt], RFAL_NFCDEP_COMM_PASSIVE, NULL, 0 ) ); gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].proto.nfcDep.activation.Target.ATR_RES.NFCID3; gNfcDev.devList[devIt].nfcidLen = RFAL_NFCDEP_NFCID3_LEN; gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_NFCDEP; /* NFC-A P2P device activated */ #else gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; /* No NFC-DEP supported activate using RF interface */ #endif /* RFAL_FEATURE_NFC_DEP */ break; /*******************************************************************************/ default: return ERR_WRONG_STATE; } break; #endif /* RFAL_FEATURE_NFCA */ /*******************************************************************************/ /* Passive NFC-B Activation */ /*******************************************************************************/ #if RFAL_FEATURE_NFCB case RFAL_NFC_LISTEN_TYPE_NFCB: if( !gNfcDev.isTechInit ) { rfalNfcbPollerInitialize(); gNfcDev.isTechInit = true; gNfcDev.isOperOngoing = false; return ERR_BUSY; } if( gNfcDev.devList[devIt].dev.nfcb.isSleep ) /* Check if desired device is in Sleep */ { rfalNfcbSensbRes sensbRes; uint8_t sensbResLen; /* Wake up all cards. SENSB_RES may return collision but the NFCID0 is available to explicitly select NFC-B card via ATTRIB; so error will be ignored here */ rfalNfcbPollerCheckPresence( RFAL_NFCB_SENS_CMD_ALLB_REQ, RFAL_NFCB_SLOT_NUM_1, &sensbRes, &sensbResLen ); } /* Set NFCID */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].dev.nfcb.sensbRes.nfcid0; gNfcDev.devList[devIt].nfcidLen = RFAL_NFCB_NFCID0_LEN; #if RFAL_FEATURE_ISO_DEP && RFAL_FEATURE_ISO_DEP_POLL /* Check if device supports ISO-DEP (ISO14443-4) */ if( (gNfcDev.devList[devIt].dev.nfcb.sensbRes.protInfo.FsciProType & RFAL_NFCB_SENSB_RES_PROTO_ISO_MASK) != 0U ) { if( !gNfcDev.isOperOngoing ) { rfalIsoDepInitialize(); /* Perform ISO-DEP (ISO14443-4) activation: ATTRIB */ EXIT_ON_ERR( err, rfalIsoDepPollBStartActivation( (rfalIsoDepFSxI)RFAL_ISODEP_FSDI_DEFAULT, RFAL_ISODEP_NO_DID, gNfcDev.disc.maxBR, 0x00, &gNfcDev.devList[devIt].dev.nfcb, NULL, 0, &gNfcDev.devList[devIt].proto.isoDep ) ); gNfcDev.isOperOngoing = true; return ERR_BUSY; } err = rfalIsoDepPollBGetActivationStatus(); if( err != ERR_NONE ) { return err; } gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_ISODEP; /* NFC-B T4T device activated */ break; } #endif /* RFAL_FEATURE_ISO_DEP_POLL */ gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; /* NFC-B device activated */ break; #endif /* RFAL_FEATURE_NFCB */ /*******************************************************************************/ /* Passive NFC-F Activation */ /*******************************************************************************/ #if RFAL_FEATURE_NFCF case RFAL_NFC_LISTEN_TYPE_NFCF: rfalNfcfPollerInitialize( gNfcDev.disc.nfcfBR ); #if RFAL_FEATURE_NFC_DEP if( rfalNfcfIsNfcDepSupported( &gNfcDev.devList[devIt].dev.nfcf ) ) { /* Perform NFC-DEP (P2P) activation: ATR and PSL if supported */ EXIT_ON_ERR( err, rfalNfcNfcDepActivate( &gNfcDev.devList[devIt], RFAL_NFCDEP_COMM_PASSIVE, NULL, 0 ) ); /* Set NFCID */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].proto.nfcDep.activation.Target.ATR_RES.NFCID3; gNfcDev.devList[devIt].nfcidLen = RFAL_NFCDEP_NFCID3_LEN; gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_NFCDEP; /* NFC-F P2P device activated */ break; } #endif /* RFAL_FEATURE_NFC_DEP */ /* Set NFCID */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].dev.nfcf.sensfRes.NFCID2; gNfcDev.devList[devIt].nfcidLen = RFAL_NFCF_NFCID2_LEN; gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; /* NFC-F T3T device activated */ break; #endif /* RFAL_FEATURE_NFCF */ /*******************************************************************************/ /* Passive NFC-V Activation */ /*******************************************************************************/ #if RFAL_FEATURE_NFCV case RFAL_NFC_LISTEN_TYPE_NFCV: rfalNfcvPollerInitialize(); /* No specific activation needed for a T5T */ /* Set NFCID */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].dev.nfcv.InvRes.UID; gNfcDev.devList[devIt].nfcidLen = RFAL_NFCV_UID_LEN; gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; /* NFC-V T5T device activated */ break; #endif /* RFAL_FEATURE_NFCV */ /*******************************************************************************/ /* Passive ST25TB Activation */ /*******************************************************************************/ #if RFAL_FEATURE_ST25TB case RFAL_NFC_LISTEN_TYPE_ST25TB: rfalSt25tbPollerInitialize(); /* No specific activation needed for a ST25TB */ /* Set NFCID */ gNfcDev.devList[devIt].nfcid = gNfcDev.devList[devIt].dev.st25tb.UID; gNfcDev.devList[devIt].nfcidLen = RFAL_ST25TB_UID_LEN; gNfcDev.devList[devIt].rfInterface = RFAL_NFC_INTERFACE_RF; /* ST25TB device activated */ break; #endif /* RFAL_FEATURE_ST25TB */ /*******************************************************************************/ default: return ERR_WRONG_STATE; } gNfcDev.activeDev = &gNfcDev.devList[devIt]; /* Assign active device to be used further on */ return ERR_NONE; } /*! ****************************************************************************** * \brief Listener Activation * * This method handles the listen mode Activation according to the different * protocols the Reader/Initiator performs * * \return ERR_NONE : Operation completed with no error * \return ERR_BUSY : Operation ongoing * \return ERR_PROTO : Unexpected frame received * \return ERR_XXXX : Error occurred * ****************************************************************************** */ #if RFAL_FEATURE_LISTEN_MODE static ReturnCode rfalNfcListenActivation( void ) { bool isDataRcvd; ReturnCode ret; rfalLmState lmSt; rfalBitRate bitRate; #if RFAL_FEATURE_NFC_DEP uint8_t hdrLen; /* Set the header length in NFC-A */ hdrLen = (RFAL_NFCDEP_SB_LEN + RFAL_NFCDEP_LEN_LEN); #endif /* RFAL_FEATURE_NFC_DEP */ lmSt = rfalListenGetState( &isDataRcvd, &bitRate ); switch(lmSt) { #if RFAL_FEATURE_NFCA /*******************************************************************************/ case RFAL_LM_STATE_ACTIVE_A: /* NFC-A CE activation */ case RFAL_LM_STATE_ACTIVE_Ax: if( isDataRcvd ) /* Check if Reader/Initator has sent some data */ { /* Check if received data is a Sleep request */ if( rfalNfcaListenerIsSleepReq( gNfcDev.rxBuf.rfBuf, rfalConvBitsToBytes(gNfcDev.rxLen)) ) /* Check if received data is a SLP_REQ */ { /* Set the Listen Mode in Sleep state */ EXIT_ON_ERR( ret, rfalListenSleepStart( RFAL_LM_STATE_SLEEP_A, gNfcDev.rxBuf.rfBuf, sizeof(gNfcDev.rxBuf.rfBuf), &gNfcDev.rxLen ) ); } else if(gNfcDev.disc.activate_after_sak) { gNfcDev.devList->type = RFAL_NFC_POLL_TYPE_NFCA; rfalListenSetState(RFAL_LM_STATE_ACTIVE_A); return ERR_NONE; } #if RFAL_FEATURE_ISO_DEP && RFAL_FEATURE_ISO_DEP_LISTEN /* Check if received data is a valid RATS */ else if( rfalIsoDepIsRats( gNfcDev.rxBuf.rfBuf, (uint8_t)rfalConvBitsToBytes(gNfcDev.rxLen) ) ) { rfalIsoDepAtsParam atsParam; rfalIsoDepListenActvParam rxParam; /* Set ATS parameters */ atsParam.fsci = (uint8_t)RFAL_ISODEP_DEFAULT_FSCI; atsParam.fwi = RFAL_ISODEP_DEFAULT_FWI; atsParam.sfgi = RFAL_ISODEP_DEFAULT_SFGI; atsParam.didSupport = false; atsParam.ta = RFAL_ISODEP_ATS_TA_SAME_D; atsParam.hb = NULL; atsParam.hbLen = 0; /* Set Rx parameters */ rxParam.rxBuf = (rfalIsoDepBufFormat*) &gNfcDev.rxBuf.isoDepBuf; /* PRQA S 0310 # MISRA 11.3 - Intentional safe cast to avoiding large buffer duplication */ rxParam.rxLen = &gNfcDev.rxLen; rxParam.isoDepDev = &gNfcDev.devList->proto.isoDep; rxParam.isRxChaining = &gNfcDev.isRxChaining; rfalListenSetState( RFAL_LM_STATE_CARDEMU_4A ); /* Set next state CE T4T */ rfalIsoDepInitialize(); /* Initialize ISO-DEP layer to handle ISO14443-a activation / RATS */ /* Set ISO-DEP layer to digest RATS and handle activation */ EXIT_ON_ERR( ret, rfalIsoDepListenStartActivation( &atsParam, NULL, gNfcDev.rxBuf.rfBuf, gNfcDev.rxLen, rxParam ) ); } #endif /* RFAL_FEATURE_ISO_DEP_LISTEN */ #if RFAL_FEATURE_NFC_DEP /* Check if received data is a valid ATR_REQ */ else if( rfalNfcDepIsAtrReq( &gNfcDev.rxBuf.rfBuf[hdrLen], (rfalConvBitsToBytes(gNfcDev.rxLen) - hdrLen), gNfcDev.devList->nfcid ) ) { gNfcDev.devList->type = RFAL_NFC_POLL_TYPE_NFCA; EXIT_ON_ERR( ret, rfalNfcNfcDepActivate( gNfcDev.devList, RFAL_NFCDEP_COMM_PASSIVE, &gNfcDev.rxBuf.rfBuf[hdrLen], (rfalConvBitsToBytes(gNfcDev.rxLen) - hdrLen) ) ); } #endif /* RFAL_FEATURE_NFC_DEP */ else { return ERR_PROTO; } } return ERR_BUSY; #endif /* RFAL_FEATURE_NFCA */ #if RFAL_FEATURE_ISO_DEP && RFAL_FEATURE_ISO_DEP_LISTEN /*******************************************************************************/ case RFAL_LM_STATE_CARDEMU_4A: /* T4T ISO-DEP activation */ ret = rfalIsoDepListenGetActivationStatus(); if( ret == ERR_NONE ) { gNfcDev.devList->type = RFAL_NFC_POLL_TYPE_NFCA; gNfcDev.devList->rfInterface = RFAL_NFC_INTERFACE_ISODEP; gNfcDev.devList->nfcid = NULL; gNfcDev.devList->nfcidLen = 0; } return ret; #endif /* RFAL_FEATURE_ISO_DEP_LISTEN */ /*******************************************************************************/ case RFAL_LM_STATE_READY_F: /* NFC-F CE activation */ if( isDataRcvd ) /* Wait for the first received data */ { #if RFAL_FEATURE_NFC_DEP /* Set the header length in NFC-F */ hdrLen = RFAL_NFCDEP_LEN_LEN; if( rfalNfcDepIsAtrReq( &gNfcDev.rxBuf.rfBuf[hdrLen], (rfalConvBitsToBytes(gNfcDev.rxLen) - hdrLen), gNfcDev.devList->nfcid ) ) { gNfcDev.devList->type = RFAL_NFC_POLL_TYPE_NFCF; EXIT_ON_ERR( ret, rfalNfcNfcDepActivate( gNfcDev.devList, RFAL_NFCDEP_COMM_PASSIVE, &gNfcDev.rxBuf.rfBuf[hdrLen], (rfalConvBitsToBytes(gNfcDev.rxLen) - hdrLen) ) ); } else #endif /* RFAL_FEATURE_NFC_DEP */ { rfalListenSetState( RFAL_LM_STATE_CARDEMU_3 ); /* First data already received - set T3T CE */ } } return ERR_BUSY; /*******************************************************************************/ case RFAL_LM_STATE_CARDEMU_3: /* T3T activated */ gNfcDev.devList->type = RFAL_NFC_POLL_TYPE_NFCF; gNfcDev.devList->rfInterface = RFAL_NFC_INTERFACE_RF; gNfcDev.devList->nfcid = NULL; gNfcDev.devList->nfcidLen = 0; return ERR_NONE; #if RFAL_FEATURE_NFC_DEP /*******************************************************************************/ case RFAL_LM_STATE_TARGET_A: /* NFC-DEP activation */ case RFAL_LM_STATE_TARGET_F: ret = rfalNfcDepListenGetActivationStatus(); if( ret == ERR_NONE ) { gNfcDev.devList->rfInterface = RFAL_NFC_INTERFACE_NFCDEP; gNfcDev.devList->nfcidLen = RFAL_NFCDEP_NFCID3_LEN; } return ret; #endif /* RFAL_FEATURE_NFC_DEP */ /*******************************************************************************/ case RFAL_LM_STATE_IDLE: /* AP2P activation */ if( isDataRcvd ) /* Check if Reader/Initator has sent some data */ { if( (gNfcDev.lmMask & RFAL_LM_MASK_ACTIVE_P2P) != 0U ) /* Check if AP2P is enabled */ { #if RFAL_FEATURE_NFC_DEP /* Calculate the header length in NFC-A or NFC-F mode*/ hdrLen = ( (bitRate == RFAL_BR_106) ? (RFAL_NFCDEP_SB_LEN + RFAL_NFCDEP_LEN_LEN) : RFAL_NFCDEP_LEN_LEN ); if( rfalNfcDepIsAtrReq( &gNfcDev.rxBuf.rfBuf[hdrLen], (rfalConvBitsToBytes(gNfcDev.rxLen) - hdrLen), NULL) ) { gNfcDev.devList->type = RFAL_NFC_POLL_TYPE_AP2P; rfalSetMode( (RFAL_MODE_LISTEN_ACTIVE_P2P), bitRate, bitRate ); EXIT_ON_ERR( ret, rfalNfcNfcDepActivate( gNfcDev.devList, RFAL_NFCDEP_COMM_ACTIVE, &gNfcDev.rxBuf.rfBuf[hdrLen], (rfalConvBitsToBytes(gNfcDev.rxLen) - hdrLen) ) ); } else #endif /* RFAL_FEATURE_NFC_DEP */ { return ERR_PROTO; } } } return ERR_BUSY; /*******************************************************************************/ case RFAL_LM_STATE_READY_A: case RFAL_LM_STATE_READY_Ax: case RFAL_LM_STATE_SLEEP_A: case RFAL_LM_STATE_SLEEP_AF: return ERR_BUSY; /*******************************************************************************/ case RFAL_LM_STATE_POWER_OFF: return ERR_LINK_LOSS; default: /* Wait for activation */ break; } return ERR_INTERNAL; } #endif /* RFAL_FEATURE_LISTEN_MODE */ /*! ****************************************************************************** * \brief Poller NFC DEP Activate * * This method performs NFC-DEP Activation * * \param[in] device : device info * \param[in] commMode : communication mode (Passive/Active) * \param[in] atrReq : received ATR_REQ * \param[in] atrReqLen : received ATR_REQ size * * \return ERR_NONE : Operation completed with no error * \return ERR_BUSY : Operation ongoing * \return ERR_XXXX : Error occurred * ****************************************************************************** */ #if RFAL_FEATURE_NFC_DEP static ReturnCode rfalNfcNfcDepActivate( rfalNfcDevice *device, rfalNfcDepCommMode commMode, const uint8_t *atrReq, uint16_t atrReqLen ) { rfalNfcDepAtrParam initParam; /* Supress warnings if Listen mode is disabled */ NO_WARNING(atrReq); NO_WARNING(atrReqLen); /* If we are in Poll mode */ if( rfalNfcIsRemDevListener( device->type ) ) { /*******************************************************************************/ /* If Passive F use the NFCID2 retrieved from SENSF */ if( device->type == RFAL_NFC_LISTEN_TYPE_NFCF ) { initParam.nfcid = device->dev.nfcf.sensfRes.NFCID2; initParam.nfcidLen = RFAL_NFCF_NFCID2_LEN; } else { initParam.nfcid = gNfcDev.disc.nfcid3; initParam.nfcidLen = RFAL_NFCDEP_NFCID3_LEN; } initParam.BS = RFAL_NFCDEP_Bx_NO_HIGH_BR; initParam.BR = RFAL_NFCDEP_Bx_NO_HIGH_BR; initParam.DID = RFAL_NFCDEP_DID_NO; initParam.NAD = RFAL_NFCDEP_NAD_NO; initParam.LR = RFAL_NFCDEP_LR_254; initParam.GB = gNfcDev.disc.GB; initParam.GBLen = gNfcDev.disc.GBLen; initParam.commMode = commMode; initParam.operParam = (RFAL_NFCDEP_OPER_FULL_MI_EN | RFAL_NFCDEP_OPER_EMPTY_DEP_DIS | RFAL_NFCDEP_OPER_ATN_EN | RFAL_NFCDEP_OPER_RTOX_REQ_EN); rfalNfcDepInitialize(); /* Perform NFC-DEP (P2P) activation: ATR and PSL if supported */ return rfalNfcDepInitiatorHandleActivation( &initParam, gNfcDev.disc.maxBR, &device->proto.nfcDep ); } /* If we are in Listen mode */ #if RFAL_FEATURE_LISTEN_MODE else if( rfalNfcIsRemDevPoller( device->type ) ) { rfalNfcDepListenActvParam actvParams; rfalNfcDepTargetParam targetParam; ST_MEMCPY(targetParam.nfcid3, (uint8_t*)gNfcDev.disc.nfcid3, RFAL_NFCDEP_NFCID3_LEN); targetParam.bst = RFAL_NFCDEP_Bx_NO_HIGH_BR; targetParam.brt = RFAL_NFCDEP_Bx_NO_HIGH_BR; targetParam.to = RFAL_NFCDEP_WT_TRG_MAX_L13; /* [LLCP] 1.3 6.2.1 */ targetParam.ppt = rfalNfcDepLR2PP(RFAL_NFCDEP_LR_254); if( gNfcDev.disc.GBLen >= RFAL_NFCDEP_GB_MAX_LEN ) { return ERR_PARAM; } targetParam.GBtLen = gNfcDev.disc.GBLen; if( gNfcDev.disc.GBLen > 0U ) { ST_MEMCPY(targetParam.GBt, gNfcDev.disc.GB, gNfcDev.disc.GBLen); } targetParam.operParam = (RFAL_NFCDEP_OPER_FULL_MI_EN | RFAL_NFCDEP_OPER_EMPTY_DEP_DIS | RFAL_NFCDEP_OPER_ATN_EN | RFAL_NFCDEP_OPER_RTOX_REQ_EN); targetParam.commMode = commMode; /* Set activation buffer (including header) for NFC-DEP */ actvParams.rxBuf = (rfalNfcDepBufFormat*) &gNfcDev.rxBuf.nfcDepBuf; /* PRQA S 0310 # MISRA 11.3 - Intentional safe cast to avoiding large buffer duplication */ actvParams.rxLen = &gNfcDev.rxLen; actvParams.isRxChaining = &gNfcDev.isRxChaining; actvParams.nfcDepDev = &gNfcDev.devList->proto.nfcDep; rfalListenSetState( ((device->type == RFAL_NFC_POLL_TYPE_NFCA) ? RFAL_LM_STATE_TARGET_A : RFAL_LM_STATE_TARGET_F) ); rfalNfcDepInitialize(); /* Perform NFC-DEP (P2P) activation: send ATR_RES and handle activation */ return rfalNfcDepListenStartActivation( &targetParam, atrReq, atrReqLen, actvParams ); } #endif /* RFAL_FEATURE_LISTEN_MODE */ else { return ERR_INTERNAL; } } #endif /* RFAL_FEATURE_NFC_DEP */ /*! ****************************************************************************** * \brief Poller NFC Deactivate * * This method Deactivates the device if a deactivation procedure exists * * \return ERR_NONE : Operation completed with no error * \return ERR_BUSY : Operation ongoing * \return ERR_XXXX : Error occurred * ****************************************************************************** */ static ReturnCode rfalNfcDeactivation( void ) { /* Check if a device has been activated */ if( gNfcDev.activeDev != NULL ) { if( rfalNfcIsRemDevListener( gNfcDev.activeDev->type ) ) /* Listen mode no additional deactivation to be performed*/ { #ifndef RFAL_NFC_SKIP_DEACT switch( gNfcDev.activeDev->rfInterface ) { /*******************************************************************************/ case RFAL_NFC_INTERFACE_RF: break; /* No specific deactivation to be performed */ /*******************************************************************************/ #if RFAL_FEATURE_ISO_DEP && RFAL_FEATURE_ISO_DEP_POLL case RFAL_NFC_INTERFACE_ISODEP: rfalIsoDepDeselect(); /* Send a Deselect to device */ break; #endif /* RFAL_FEATURE_ISO_DEP_POLL */ /*******************************************************************************/ #if RFAL_FEATURE_NFC_DEP case RFAL_NFC_INTERFACE_NFCDEP: switch ( gNfcDev.activeDev->type ) { case RFAL_NFC_LISTEN_TYPE_AP2P: rfalNfcDepRLS(); /* Send a Release to device */ break; default: rfalNfcDepDSL(); /* Send a Deselect to device */ break; } break; #endif /* RFAL_FEATURE_NFC_DEP */ default: return ERR_REQUEST; } #endif /* RFAL_NFC_SKIP_DEACT */ } } #if RFAL_FEATURE_WAKEUP_MODE rfalWakeUpModeStop(); #endif /* RFAL_FEATURE_WAKEUP_MODE */ #if RFAL_FEATURE_LISTEN_MODE rfalListenStop(); #else rfalFieldOff(); #endif gNfcDev.activeDev = NULL; return ERR_NONE; }