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nfc_initiator_transceive_bits_timed() function does not now use pszRxBits as parameter because this function returns it.

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This commit is contained in:
Audrey Diacre 2012-01-04 15:43:08 +00:00
parent 6e7092b160
commit b699743973
6 changed files with 12 additions and 13 deletions
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12
libnfc/chips/pn53x.c
View file

@ -1318,7 +1318,7 @@ uint32_t __pn53x_get_timer(struct nfc_device *pnd, const uint8_t last_cmd_byte)
int
pn53x_initiator_transceive_bits_timed (struct nfc_device *pnd, const uint8_t *pbtTx, const size_t szTxBits,
const uint8_t *pbtTxPar, uint8_t *pbtRx, size_t *pszRxBits, uint8_t *pbtRxPar, uint32_t *cycles)
const uint8_t *pbtTxPar, uint8_t *pbtRx, uint8_t *pbtRxPar, uint32_t *cycles)
{
// TODO Do something with these bytes...
(void) pbtTxPar;
@ -1326,6 +1326,7 @@ pn53x_initiator_transceive_bits_timed (struct nfc_device *pnd, const uint8_t *pb
uint16_t i;
uint8_t sz;
int res = 0;
size_t szRxBits = 0;
// Sorry, no arbitrary parity bits support for now
if (!pnd->bPar) {
@ -1373,7 +1374,6 @@ pn53x_initiator_transceive_bits_timed (struct nfc_device *pnd, const uint8_t *pb
}
// Recv data
*pszRxBits = 0;
// we've to watch for coming data until we decide to timeout.
// our PN53x timer saturates after 4.8ms so this function shouldn't be used for
// responses coming very late anyway.
@ -1404,19 +1404,19 @@ pn53x_initiator_transceive_bits_timed (struct nfc_device *pnd, const uint8_t *pb
return res;
}
for (i = 0; i < sz; i++) {
pbtRx[i+*pszRxBits] = abtRes[i+off];
pbtRx[i+szRxBits] = abtRes[i+off];
}
*pszRxBits += (size_t) (sz & SYMBOL_FIFO_LEVEL);
szRxBits += (size_t) (sz & SYMBOL_FIFO_LEVEL);
sz = abtRes[sz+off];
if (sz == 0)
break;
}
*pszRxBits *= 8; // in bits, not bytes
szRxBits *= 8; // in bits, not bytes
// Recv corrected timer value
*cycles = __pn53x_get_timer (pnd, pbtTx[szTxBits / 8]);
return *pszRxBits;
return szRxBits;
}
int

3
libnfc/chips/pn53x.h
View file

@ -302,8 +302,7 @@ int pn53x_initiator_transceive_bits (struct nfc_device *pnd, const uint8_t *p
int pn53x_initiator_transceive_bytes (struct nfc_device *pnd, const uint8_t *pbtTx, const size_t szTx,
uint8_t *pbtRx, size_t *pszRx, int timeout);
int pn53x_initiator_transceive_bits_timed (struct nfc_device *pnd, const uint8_t *pbtTx, const size_t szTxBits,
const uint8_t *pbtTxPar, uint8_t *pbtRx, size_t *pszRxBits,
uint8_t *pbtRxPar, uint32_t *cycles);
const uint8_t *pbtTxPar, uint8_t *pbtRx, uint8_t *pbtRxPar, uint32_t *cycles);
int pn53x_initiator_transceive_bytes_timed (struct nfc_device *pnd, const uint8_t *pbtTx, const size_t szTx,
uint8_t *pbtRx, size_t *pszRx, uint32_t *cycles);
int pn53x_initiator_deselect_target (struct nfc_device *pnd);