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pn53x_check_communication() returns now 0 on success and libnfc error code on failure.

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This commit is contained in:
Audrey Diacre 2012-01-04 16:19:24 +00:00
parent 240cdcddab
commit 7e1c776bc1
4 changed files with 14 additions and 10 deletions
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12
libnfc/chips/pn53x.c
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@ -870,18 +870,22 @@ pn53x_idle (struct nfc_device *pnd)
return true;
}
bool
int
pn53x_check_communication (struct nfc_device *pnd)
{
const uint8_t abtCmd[] = { Diagnose, 0x00, 'l', 'i', 'b', 'n', 'f', 'c' };
const uint8_t abtExpectedRx[] = { 0x00, 'l', 'i', 'b', 'n', 'f', 'c' };
uint8_t abtRx[sizeof(abtExpectedRx)];
size_t szRx = sizeof (abtRx);
int res = 0;
if (pn53x_transceive (pnd, abtCmd, sizeof (abtCmd), abtRx, &szRx, 1000) < 0)
return false;
if ((res = pn53x_transceive (pnd, abtCmd, sizeof (abtCmd), abtRx, &szRx, 1000)) < 0)
return res;
return ((sizeof(abtExpectedRx) == szRx) && (0 == memcmp (abtRx, abtExpectedRx, sizeof(abtExpectedRx))));
if (((sizeof(abtExpectedRx) == szRx) && (0 == memcmp (abtRx, abtExpectedRx, sizeof(abtExpectedRx)))) == 0)
return NFC_ECHIP;
return NFC_SUCCESS;
}
int

2
libnfc/chips/pn53x.h
View file

@ -279,7 +279,7 @@ int pn53x_get_firmware_version (struct nfc_device *pnd, char abtFirmwareText[
int pn53x_set_property_int (struct nfc_device *pnd, const nfc_property property, const int value);
int pn53x_set_property_bool (struct nfc_device *pnd, const nfc_property property, const bool bEnable);
bool pn53x_check_communication (struct nfc_device *pnd);
int pn53x_check_communication (struct nfc_device *pnd);
bool pn53x_idle (struct nfc_device *pnd);
// NFC device as Initiator functions