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Improve ATQB decoding: "PUPI", "Application Data", and "Protocol Info" is now available as separated fields.

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This commit is contained in:
Romuald Conty 2010-09-23 16:26:06 +00:00
parent ccfd24a682
commit 2f95fb254b
3 changed files with 27 additions and 7 deletions
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8
examples/nfc-utils.c
View file

@ -135,8 +135,12 @@ print_nfc_felica_info (const nfc_felica_info_t nfi)
void
print_nfc_iso14443b_info (const nfc_iso14443b_info_t nbi)
{
printf (" ATQB: ");
print_hex (nbi.abtAtqb, 12);
printf (" PUPI: ");
print_hex (nbi.abtPupi, 4);
printf (" Application Data: ");
print_hex (nbi.abtApplicationData, 4);
printf (" Protocol Info: ");
print_hex (nbi.abtProtocolInfo, 3);
}
/**

8
include/nfc/nfc-types.h
View file

@ -231,8 +231,12 @@ typedef struct {
* @brief NFC ISO14443B tag information
*/
typedef struct {
/** abtAtqb store ATQB (Answer To reQuest of type B) */
byte_t abtAtqb[12];
/** abtPupi store PUPI contained in ATQB (Answer To reQuest of type B) (see ISO14443-3) */
byte_t abtPupi[4];
/** abtApplicationData store Application Data contained in ATQB (see ISO14443-3) */
byte_t abtApplicationData[4];
/** abtProtocolInfo store Protocol Info contained in ATQB (see ISO14443-3) */
byte_t abtProtocolInfo[3];
/** ui8CardIdentifier store CID (Card Identifier) attributted by PCD to the PICC */
uint8_t ui8CardIdentifier;
} nfc_iso14443b_info_t;

18
libnfc/chips/pn53x.c
View file

@ -369,10 +369,22 @@ pn53x_decode_target_data (const byte_t * pbtRawData, size_t szDataLen, nfc_chip_
// We skip the first byte: its the target number (Tg)
pbtRawData++;
// Store the mandatory info
memcpy (pnti->nbi.abtAtqb, pbtRawData, 12);
pbtRawData += 12;
// Now we are in ATQB, we skip the first ATQB byte always equal to 0x50
pbtRawData++;
// Store the PUPI (Pseudo-Unique PICC Identifier)
memcpy (pnti->nbi.abtPupi, pbtRawData, 4);
pbtRawData += 4;
// Store the Application Data
memcpy (pnti->nbi.abtApplicationData, pbtRawData, 4);
pbtRawData += 4;
// Store the Protocol Info
memcpy (pnti->nbi.abtProtocolInfo, pbtRawData, 3);
pbtRawData += 3;
// We leave the ATQB field, we now enter in Card IDentifier
szAttribRes = *(pbtRawData++);
if (szAttribRes) {
pnti->nbi.ui8CardIdentifier = *(pbtRawData++);