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New internal API function: pn53x_target_receive_dep_bytes().

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This commit is contained in:
Romain Tartiere 2010-08-24 10:11:48 +00:00
parent 7a231cfb03
commit 3d69c8b694
3 changed files with 25 additions and 18 deletions
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21
libnfc/chips/pn53x.c
View file

@ -870,3 +870,24 @@ bool pn53x_transceive_bytes(nfc_device_t* pnd, const byte_t* pbtTx, const size_t
// Everything went successful // Everything went successful
return true; return true;
} }
bool pn53x_target_receive_dep_bytes(nfc_device_t* pnd, byte_t* pbtRx, size_t* pszRxLen)
{
byte_t abtRx[MAX_FRAME_LEN];
size_t szRxLen;
pnd->iLastError = 0;
// Try to gather a received frame from the reader
if (!pn53x_transceive(pnd,pncmd_target_get_data,2,abtRx,&szRxLen)) return false;
// Save the received byte count
*pszRxLen = szRxLen-1;
// Copy the received bytes
memcpy(pbtRx,abtRx+1,*pszRxLen);
// Everyting seems ok, return true
return true;
}

2
libnfc/chips/pn53x.h
View file

@ -101,6 +101,8 @@ bool pn53x_transceive_dep_bytes(nfc_device_t* pnd, const byte_t* pbtTx, const si
bool pn53x_transceive_bits(nfc_device_t* pnd, const byte_t* pbtTx, const size_t szTxBits, const byte_t* pbtTxPar, byte_t* pbtRx, size_t* pszRxBits, byte_t* pbtRxPar); bool pn53x_transceive_bits(nfc_device_t* pnd, const byte_t* pbtTx, const size_t szTxBits, const byte_t* pbtTxPar, byte_t* pbtRx, size_t* pszRxBits, byte_t* pbtRxPar);
bool pn53x_transceive_bytes(nfc_device_t* pnd, const byte_t* pbtTx, const size_t szTxLen, byte_t* pbtRx, size_t* pszRxLen); bool pn53x_transceive_bytes(nfc_device_t* pnd, const byte_t* pbtTx, const size_t szTxLen, byte_t* pbtRx, size_t* pszRxLen);
bool pn53x_target_receive_dep_bytes(nfc_device_t* pnd, byte_t* pbtRx, size_t* pszRxLen);
const char *pn53x_strerror (const nfc_device_t *pnd); const char *pn53x_strerror (const nfc_device_t *pnd);
static const struct chip_callbacks pn53x_callbacks_list = { static const struct chip_callbacks pn53x_callbacks_list = {

20
libnfc/nfc.c
View file

@ -68,7 +68,7 @@ nfc_device_desc_t * nfc_pick_device (void);
// extern const byte_t pncmd_initiator_auto_poll [ 5]; // extern const byte_t pncmd_initiator_auto_poll [ 5];
// //
// // Target // // Target
extern const byte_t pncmd_target_get_data [ 2]; // extern const byte_t pncmd_target_get_data [ 2];
extern const byte_t pncmd_target_set_data [264]; extern const byte_t pncmd_target_set_data [264];
extern const byte_t pncmd_target_init [ 39]; extern const byte_t pncmd_target_init [ 39];
// extern const byte_t pncmd_target_virtual_card [ 4]; // extern const byte_t pncmd_target_virtual_card [ 4];
@ -629,23 +629,7 @@ bool nfc_target_receive_bits(nfc_device_t* pnd, byte_t* pbtRx, size_t* pszRxBits
*/ */
bool nfc_target_receive_dep_bytes(nfc_device_t* pnd, byte_t* pbtRx, size_t* pszRxLen) bool nfc_target_receive_dep_bytes(nfc_device_t* pnd, byte_t* pbtRx, size_t* pszRxLen)
{ {
byte_t abtRx[MAX_FRAME_LEN]; return pn53x_target_receive_dep_bytes (pnd, pbtRx, pszRxLen);
size_t szRxLen;
pnd->iLastError = 0;
// Try to gather a received frame from the reader
if (!pn53x_transceive(pnd,pncmd_target_get_data,2,abtRx,&szRxLen)) return false;
// Save the received byte count
*pszRxLen = szRxLen-1;
// Copy the received bytes
memcpy(pbtRx,abtRx+1,*pszRxLen);
// Everyting seems ok, return true
return true;
} }
/** /**