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pn53x: handle properly ReadRegister of PN533

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This commit is contained in:
Philippe Teuwen 2010-10-01 17:42:16 +00:00
parent ae522c843c
commit c937e8d178
2 changed files with 15 additions and 12 deletions
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19
libnfc/chips/pn53x.c
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@ -164,13 +164,24 @@ pn53x_transceive (nfc_device_t * pnd, const byte_t * pbtTx, const size_t szTxLen
bool
pn53x_get_reg (nfc_device_t * pnd, uint16_t ui16Reg, uint8_t * ui8Value)
{
size_t szValueLen = 1;
size_t szValueLen;
byte_t abtCmd[sizeof (pncmd_get_register)];
memcpy (abtCmd, pncmd_get_register, sizeof (pncmd_get_register));
abtCmd[2] = ui16Reg >> 8;
abtCmd[3] = ui16Reg & 0xff;
return pn53x_transceive (pnd, abtCmd, 4, ui8Value, &szValueLen);
if (pn53x_transceive (pnd, abtCmd, sizeof (pncmd_get_register), ui8Value, &szValueLen)) {
if (pnd->nc == NC_PN533) {
// PN533 prepends its answer by a status byte
if (ui8Value[0] == 0) {
ui8Value[0] = ui8Value[1];
} else {
return false;
}
}
return true;
}
return false;
}
bool
@ -186,7 +197,7 @@ pn53x_set_reg (nfc_device_t * pnd, uint16_t ui16Reg, uint8_t ui8SymbolMask, uint
return false;
abtCmd[4] = ui8Value | (ui8Current & (~ui8SymbolMask));
return pn53x_transceive (pnd, abtCmd, 5, NULL, NULL);
return pn53x_transceive (pnd, abtCmd, sizeof (pncmd_set_register), NULL, NULL);
}
bool
@ -196,7 +207,7 @@ pn53x_set_parameters (nfc_device_t * pnd, uint8_t ui8Value)
memcpy (abtCmd, pncmd_set_parameters, sizeof (pncmd_set_parameters));
abtCmd[2] = ui8Value;
return pn53x_transceive (pnd, abtCmd, 3, NULL, NULL);
return pn53x_transceive (pnd, abtCmd, sizeof (pncmd_set_parameters), NULL, NULL);
}
bool