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Move hardware polling function in pn53x.c/h.

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This commit is contained in:
Romuald Conty 2010-08-17 08:24:38 +00:00
parent 41b1455f04
commit ae04479968
3 changed files with 64 additions and 51 deletions
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59
libnfc/chips/pn53x.c
View file

@ -28,6 +28,7 @@
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "pn53x.h"
#include "../mirror-subr.h"
@ -336,3 +337,61 @@ pn53x_InRelease(nfc_device_t* pnd, const uint8_t ui8Target)
return(pn53x_transceive(pnd,abtCmd,sizeof(abtCmd),NULL,NULL));
}
bool
pn53x_InAutoPoll(const nfc_device_t* pnd,
const nfc_target_type_t* pnttTargetTypes, const size_t szTargetTypes,
const byte_t btPollNr, const byte_t btPeriod,
nfc_target_t* pntTargets, size_t* pszTargetFound)
{
size_t szTxInAutoPoll, n, szRxLen;
byte_t abtRx[256];
bool res;
byte_t *pbtTxInAutoPoll;
if(pnd->nc == NC_PN531) {
// TODO This function is not supported by pn531 (set errno = ENOSUPP or similar)
return false;
}
// InAutoPoll frame looks like this { 0xd4, 0x60, 0x0f, 0x01, 0x00 } => { direction, command, pollnr, period, types... }
szTxInAutoPoll = 4 + szTargetTypes;
pbtTxInAutoPoll = malloc( szTxInAutoPoll );
pbtTxInAutoPoll[0] = 0xd4;
pbtTxInAutoPoll[1] = 0x60;
pbtTxInAutoPoll[2] = btPollNr;
pbtTxInAutoPoll[3] = btPeriod;
for(n=0; n<szTargetTypes; n++) {
pbtTxInAutoPoll[4+n] = pnttTargetTypes[n];
}
szRxLen = 256;
res = pnd->pdc->transceive(pnd->nds, pbtTxInAutoPoll, szTxInAutoPoll, abtRx, &szRxLen);
if((szRxLen == 0)||(res == false)) {
return false;
} else {
*pszTargetFound = abtRx[0];
if( *pszTargetFound ) {
uint8_t ln;
byte_t* pbt = abtRx + 1;
/* 1st target */
// Target type
pntTargets[0].ntt = *(pbt++);
// AutoPollTargetData length
ln = *(pbt++);
pn53x_decode_target_data(pbt, ln, pnd->nc, pntTargets[0].ntt, &(pntTargets[0].nti));
pbt += ln;
if(abtRx[0] > 1) {
/* 2nd target */
// Target type
pntTargets[1].ntt = *(pbt++);
// AutoPollTargetData length
ln = *(pbt++);
pn53x_decode_target_data(pbt, ln, pnd->nc, pntTargets[1].ntt, &(pntTargets[1].nti));
}
}
}
return true;
}

1
libnfc/chips/pn53x.h
View file

@ -81,6 +81,7 @@ bool pn53x_decode_target_data(const byte_t* pbtRawData, size_t szDataLen, nfc_ch
bool pn53x_InListPassiveTarget(const nfc_device_t* pnd, const nfc_modulation_t nmInitModulation, const byte_t szMaxTargets, const byte_t* pbtInitiatorData, const size_t szInitiatorDataLen, byte_t* pbtTargetsData, size_t* pszTargetsData);
bool pn53x_InDeselect(const nfc_device_t* pnd, const uint8_t ui8Target);
bool pn53x_InRelease(nfc_device_t* pnd, const uint8_t ui8Target);
bool pn53x_InAutoPoll(const nfc_device_t* pnd, const nfc_target_type_t* pnttTargetTypes, const size_t szTargetTypes, const byte_t btPollNr, const byte_t btPeriod, nfc_target_t* pntTargets, size_t* pszTargetFound);
#endif // __NFC_CHIPS_PN53X_H__

55
libnfc/nfc.c
View file

@ -438,7 +438,7 @@ nfc_initiator_select_passive_target(const nfc_device_t* pnd,
// Make sure we are dealing with a active device
if (!pnd->bActive) return false;
// TODO Put this in a function
switch(nmInitModulation)
{
case NM_ISO14443A_106:
@ -485,7 +485,8 @@ nfc_initiator_select_passive_target(const nfc_device_t* pnd,
{
case NM_ISO14443A_106:
if(!pn53x_decode_target_data(abtTargetsData+1, szTargetsData-1, pnd->nc, NTT_GENERIC_PASSIVE_106, pnti)) return false;
// TODO this should be handled by pn53x_decode_target_data()
// Strip CT (Cascade Tag) to retrieve and store the _real_ UID
// (e.g. 0x8801020304050607 is in fact 0x01020304050607)
if ((pnti->nai.szUidLen == 8) && (pnti->nai.abtUid[0] == 0x88)) {
@ -651,55 +652,7 @@ nfc_initiator_poll_targets(const nfc_device_t* pnd,
const byte_t btPollNr, const byte_t btPeriod,
nfc_target_t* pntTargets, size_t* pszTargetFound)
{
size_t szTxInAutoPoll, n, szRxLen;
byte_t abtRx[256];
bool res;
byte_t *pbtTxInAutoPoll;
if(pnd->nc == NC_PN531) {
// errno = ENOSUPP
return false;
}
// byte_t abtInAutoPoll[] = { 0xd4, 0x60, 0x0f, 0x01, 0x00 };
szTxInAutoPoll = 4 + szTargetTypes;
pbtTxInAutoPoll = malloc( szTxInAutoPoll );
pbtTxInAutoPoll[0] = 0xd4;
pbtTxInAutoPoll[1] = 0x60;
pbtTxInAutoPoll[2] = btPollNr;
pbtTxInAutoPoll[3] = btPeriod;
for(n=0; n<szTargetTypes; n++) {
pbtTxInAutoPoll[4+n] = pnttTargetTypes[n];
}
szRxLen = 256;
res = pnd->pdc->transceive(pnd->nds, pbtTxInAutoPoll, szTxInAutoPoll, abtRx, &szRxLen);
if((szRxLen == 0)||(res == false)) {
DBG("pnd->pdc->tranceive() failed: szRxLen=%ld, res=%d", (unsigned long) szRxLen, res);
return false;
} else {
*pszTargetFound = abtRx[0];
if( *pszTargetFound ) {
uint8_t ln;
byte_t* pbt = abtRx + 1;
/* 1st target */
// Target type
pntTargets[0].ntt = *(pbt++);
// AutoPollTargetData length
ln = *(pbt++);
pn53x_decode_target_data(pbt, ln, pnd->nc, pntTargets[0].ntt, &(pntTargets[0].nti));
pbt += ln;
if(abtRx[0] > 1) {
/* 2nd target */
// Target type
pntTargets[1].ntt = *(pbt++);
// AutoPollTargetData length
ln = *(pbt++);
pn53x_decode_target_data(pbt, ln, pnd->nc, pntTargets[1].ntt, &(pntTargets[1].nti));
}
}
}
return true;
return pn53x_InAutoPoll(pnd, pnttTargetTypes, szTargetTypes, btPollNr, btPeriod, pntTargets, pszTargetFound);
}
/**