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Add ISO/IEC 14443 B' aka Type B' modulation partial support

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This commit is contained in:
Romuald Conty 2011-05-06 14:14:06 +00:00
parent 77e522aade
commit cd6946e751
7 changed files with 172 additions and 1 deletions
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93
libnfc/chips/pn53x.c
View file

@ -368,6 +368,27 @@ pn53x_decode_target_data (const byte_t * pbtRawData, size_t szRawData, pn53x_typ
}
break;
case NMT_ISO14443BI:
// Skip V & T Addresses
pbtRawData++;
if (*pbtRawData != 0x07) { // 0x07 = REPGEN
return false;
}
pbtRawData++;
// Store the UID
memcpy (pnti->nii.abtDIV, pbtRawData, 4);
pbtRawData += 4;
pnti->nii.btVerLog = *(pbtRawData++);
if (pnti->nii.btVerLog & 0x80) { // Type = long?
pnti->nii.btConfig = *(pbtRawData++);
if (pnti->nii.btConfig & 0x40) {
memcpy (pnti->nii.abtAtr, pbtRawData, szRawData - 8);
pbtRawData += szRawData - 6;
pnti->nii.szAtrLen = szRawData - 8;
}
}
break;
case NMT_FELICA:
// We skip the first byte: its the target number (Tg)
pbtRawData++;
@ -588,6 +609,40 @@ pn53x_configure (nfc_device_t * pnd, const nfc_device_option_t ndo, const bool b
return true;
break;
case NDO_FORCE_ISO14443_B:
if(!bEnable) {
// Nothing to do
return true;
}
// Force pn53x to be in ISO14443-B mode
if (!pn53x_write_register (pnd, REG_CIU_TX_MODE, SYMBOL_TX_FRAMING, 0x03)) {
return false;
}
if (!pn53x_write_register (pnd, REG_CIU_RX_MODE, SYMBOL_RX_FRAMING, 0x03)) {
return false;
}
return true;
break;
case NDO_FORCE_SPEED_106:
if(!bEnable) {
// Nothing to do
return true;
}
// Force pn53x to be at 106 kbps
if (!pn53x_write_register (pnd, REG_CIU_TX_MODE, SYMBOL_TX_SPEED, 0x00)) {
return false;
}
if (!pn53x_write_register (pnd, REG_CIU_RX_MODE, SYMBOL_RX_SPEED, 0x00)) {
return false;
}
// TODO not yet sufficient to setup TypeB, some settings are missing here...
return true;
break;
}
// When we reach this, the configuration is completed and succesful
@ -628,11 +683,44 @@ pn53x_initiator_select_passive_target (nfc_device_t * pnd,
byte_t abtTargetsData[PN53x_EXTENDED_FRAME__DATA_MAX_LEN];
size_t szTargetsData = sizeof(abtTargetsData);
if (nm.nmt == NMT_ISO14443BI) {
// No native support in InListPassiveTarget so we do discovery by hand
byte_t abtAttrib[6];
size_t szAttrib = sizeof(abtAttrib);
if (!nfc_configure (pnd, NDO_FORCE_ISO14443_B, true)) {
return false;
}
if (!nfc_configure (pnd, NDO_FORCE_SPEED_106, true)) {
return false;
}
if (!nfc_configure (pnd, NDO_HANDLE_CRC, true)) {
return false;
}
pnd->bEasyFraming = false;
if (!pn53x_initiator_transceive_bytes (pnd, pbtInitData, szInitData, abtTargetsData, &szTargetsData)) {
return false;
}
if (pnt) {
pnt->nm = nm;
// Fill the tag info struct with the values corresponding to this init modulation
if (!pn53x_decode_target_data (abtTargetsData, szTargetsData, CHIP_DATA(pnd)->type, nm.nmt, &(pnt->nti))) {
return false;
}
}
memcpy(abtAttrib, abtTargetsData, szAttrib);
abtAttrib[1] = 0x0f; // ATTRIB
if (!pn53x_initiator_transceive_bytes (pnd, abtAttrib, szAttrib, NULL, NULL)) {
return false;
}
return true;
} // else:
const pn53x_modulation_t pm = pn53x_nm_to_pm(nm);
if (PM_UNDEFINED == pm) {
pnd->iLastError = DENOTSUP;
return false;
}
if (!pn53x_InListPassiveTarget (pnd, pm, 1, pbtInitData, szInitData, abtTargetsData, &szTargetsData))
return false;
@ -1048,6 +1136,7 @@ pn53x_target_init (nfc_device_t * pnd, nfc_target_t * pnt, byte_t * pbtRx, size_
}
break;
case NMT_ISO14443B:
case NMT_ISO14443BI:
case NMT_JEWEL:
pnd->iLastError = DENOTSUP;
return false;
@ -1147,6 +1236,7 @@ pn53x_target_init (nfc_device_t * pnd, nfc_target_t * pnt, byte_t * pbtRx, size_
pbtFeliCaParams = abtFeliCaParams;
break;
case NMT_ISO14443B:
case NMT_ISO14443BI:
case NMT_JEWEL:
pnd->iLastError = DENOTSUP;
return false;
@ -1925,6 +2015,8 @@ pn53x_nm_to_pm(const nfc_modulation_t nm)
break;
}
break;
case NMT_ISO14443BI:
case NMT_DEP:
// Nothing to do...
break;
@ -2024,6 +2116,7 @@ pn53x_nm_to_ptt(const nfc_modulation_t nm)
}
break;
case NMT_ISO14443BI:
case NMT_DEP:
// Nothing to do...
break;

2
libnfc/chips/pn53x.h
View file

@ -32,6 +32,7 @@
// Registers and symbols masks used to covers parts within a register
# define REG_CIU_TX_MODE 0x6302
# define SYMBOL_TX_CRC_ENABLE 0x80
# define SYMBOL_TX_SPEED 0x70
// TX_FRAMING bits explanation:
// 00 : ISO/IEC 14443A/MIFARE and Passive Communication mode 106 kbit/s
// 01 : Active Communication mode
@ -46,6 +47,7 @@
# define REG_CIU_RX_MODE 0x6303
# define SYMBOL_RX_CRC_ENABLE 0x80
# define SYMBOL_RX_SPEED 0x70
# define SYMBOL_RX_NO_ERROR 0x08
# define SYMBOL_RX_MULTIPLE 0x04
// RX_FRAMING follow same scheme than TX_FRAMING

13
libnfc/nfc.c
View file

@ -83,6 +83,7 @@ const struct nfc_driver_t *nfc_drivers[] = {
* - Invalid frames are not accepted (NDO_ACCEPT_INVALID_FRAMES = false)
* - Multiple frames are not accepted (NDO_ACCEPT_MULTIPLE_FRAMES = false)
* - 14443-A mode is activated (NDO_FORCE_ISO14443_A = true)
* - speed is set to 106 kbps (NDO_FORCE_SPEED_106 = true)
* - Let the device try forever to find a target (NDO_INFINITE_SELECT = true)
* - RF field is shortly dropped (if it was enabled) then activated again
*/
@ -241,6 +242,9 @@ nfc_initiator_init (nfc_device_t * pnd)
// Force 14443-A mode
if (!nfc_configure (pnd, NDO_FORCE_ISO14443_A, true))
return false;
// Force speed at 106kbps
if (!nfc_configure (pnd, NDO_FORCE_SPEED_106, true))
return false;
// Disallow invalid frame
if (!nfc_configure (pnd, NDO_ACCEPT_INVALID_FRAMES, false))
return false;
@ -376,6 +380,12 @@ nfc_initiator_list_passive_targets (nfc_device_t * pnd,
szInitDataLen = 1;
}
break;
case NMT_ISO14443BI: {
// APGEN
pbtInitData = (byte_t *) "\x01\x0b\x3f\x80";
szInitDataLen = 4;
}
break;
case NMT_FELICA: {
// polling payload must be present (see ISO/IEC 18092 11.2.2.5)
pbtInitData = (byte_t *) "\x00\xff\xff\x01\x00";
@ -396,7 +406,8 @@ nfc_initiator_list_passive_targets (nfc_device_t * pnd,
}
szTargetFound++;
// deselect has no effect on FeliCa and Jewel cards so we'll stop after one...
if ((nm.nmt == NMT_FELICA) || (nm.nmt == NMT_JEWEL)) {
// ISO/IEC 14443 B' cards are polled at 100% probability so it's not possible to detect correctly two cards at the same time
if ((nm.nmt == NMT_FELICA) || (nm.nmt == NMT_JEWEL) || (nm.nmt == NMT_ISO14443BI)) {
break;
}
}