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Also detect error frames in pn532_uart (tested) and arygon drivers (not tested).

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This commit is contained in:
Romain Tartiere 2010-08-20 10:40:00 +00:00
parent dadaee4cc0
commit fd337dd0cc
2 changed files with 21 additions and 13 deletions
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14
libnfc/drivers/arygon.c
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@ -237,11 +237,6 @@ bool arygon_transceive(nfc_device_t* pnd, const byte_t* pbtTx, const size_t szTx
PRINT_HEX("RX", abtRxBuf,szRxBufLen);
#endif
// When the answer should be ignored, just return a successful result
if(pbtRx == NULL || pszRxLen == NULL) return true;
// Only succeed when the result is at least 00 00 FF xx Fx Dx xx .. .. .. xx 00 (x = variable)
if(szRxBufLen < 9) return false;
#ifdef DEBUG
PRINT_HEX("TX", ack_frame, 6);
@ -251,6 +246,15 @@ bool arygon_transceive(nfc_device_t* pnd, const byte_t* pbtTx, const size_t szTx
return false;
}
if (!pn53x_transceive_check_error_frame_callback(pnd, abtRxBuf, szRxBufLen))
return false;
// When the answer should be ignored, just return a successful result
if(pbtRx == NULL || pszRxLen == NULL) return true;
// Only succeed when the result is at least 00 00 FF xx Fx Dx xx .. .. .. xx 00 (x = variable)
if(szRxBufLen < 9) return false;
// Remove the preceding and appending bytes 00 00 ff 00 ff 00 00 00 FF xx Fx .. .. .. xx 00 (x = variable)
*pszRxLen = szRxBufLen - 9;
memcpy(pbtRx, abtRxBuf+7, *pszRxLen);

20
libnfc/drivers/pn532_uart.c
View file

@ -237,14 +237,6 @@ bool pn532_uart_transceive(nfc_device_t* pnd, const byte_t* pbtTx, const size_t
#endif
}
// When the answer should be ignored, just return a successful result
if(pbtRx == NULL || pszRxLen == NULL) return true;
// Only succeed when the result is at least 00 00 FF xx Fx Dx xx .. .. .. xx 00 (x = variable)
if(szRxBufLen < 9) {
pnd->iLastError = DEINVAL;
return false;
}
#ifdef DEBUG
PRINT_HEX("TX", ack_frame,6);
@ -256,6 +248,18 @@ bool pn532_uart_transceive(nfc_device_t* pnd, const byte_t* pbtTx, const size_t
return false;
}
if (!pn53x_transceive_check_error_frame_callback (pnd, abtRxBuf, szRxBufLen))
return false;
// When the answer should be ignored, just return a successful result
if(pbtRx == NULL || pszRxLen == NULL) return true;
// Only succeed when the result is at least 00 00 FF xx Fx Dx xx .. .. .. xx 00 (x = variable)
if(szRxBufLen < 9) {
pnd->iLastError = DEINVAL;
return false;
}
// Remove the preceding and appending bytes 00 00 ff 00 ff 00 00 00 FF xx Fx .. .. .. xx 00 (x = variable)
*pszRxLen = szRxBufLen - 9;
memcpy(pbtRx, abtRxBuf+7, *pszRxLen);