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pn53x _timed fcts: safebelts towards new writeback mechanism

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This commit is contained in:
Philippe Teuwen 2011-05-09 21:08:03 +00:00
parent ef3303839a
commit 0e3357b589
1 changed files with 8 additions and 0 deletions
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8
libnfc/chips/pn53x.c
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@ -1161,13 +1161,17 @@ pn53x_initiator_transceive_bits_timed (nfc_device_t * pnd, const byte_t * pbtTx,
// 631a=82 631b=a5 631c=02 631d=00
// Prepare FIFO
pn53x_write_register (pnd, REG_CIU_COMMAND, 0xFF, SYMBOL_COMMAND & SYMBOL_COMMAND_TRANSCEIVE);
pn53x_writeback_register(pnd);
pn53x_write_register (pnd, REG_CIU_FIFOLEVEL, 0xFF, SYMBOL_FLUSH_BUFFER);
pn53x_writeback_register(pnd);
for (i=0; i< ((szTxBits / 8) + 1); i++) {
pn53x_write_register (pnd, REG_CIU_FIFODATA, 0xFF, pbtTx[i]);
pn53x_writeback_register(pnd);
}
// Send data
pn53x_write_register (pnd, REG_CIU_BIT_FRAMING, 0xFF, SYMBOL_START_SEND | ((szTxBits % 8) & SYMBOL_TX_LAST_BITS));
pn53x_writeback_register(pnd);
// Recv data
*pszRxBits = 0;
@ -1223,13 +1227,17 @@ pn53x_initiator_transceive_bytes_timed (nfc_device_t * pnd, const byte_t * pbtTx
// 631a=82 631b=a5 631c=02 631d=00
// Prepare FIFO
pn53x_write_register (pnd, REG_CIU_COMMAND, 0xFF, SYMBOL_COMMAND & SYMBOL_COMMAND_TRANSCEIVE);
pn53x_writeback_register(pnd);
pn53x_write_register (pnd, REG_CIU_FIFOLEVEL, 0xFF, SYMBOL_FLUSH_BUFFER);
pn53x_writeback_register(pnd);
for (i=0; i< szTx; i++) {
pn53x_write_register (pnd, REG_CIU_FIFODATA, 0xFF, pbtTx[i]);
pn53x_writeback_register(pnd);
}
// Send data
pn53x_write_register (pnd, REG_CIU_BIT_FRAMING, 0xFF, SYMBOL_START_SEND);
pn53x_writeback_register(pnd);
// Recv data
*pszRx = 0;