crewID/libnfc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

pn53x_writeback_register() function returns now 0 on success and libnfc error code on failure.

Browse source
This commit is contained in:
Audrey Diacre 2012-01-05 08:42:22 +00:00
parent 93b34fa70b
commit 6ad07c3efb
1 changed files with 11 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
libnfc/chips/pn53x.c
View file

@ -52,7 +52,7 @@ static const uint8_t pn53x_error_frame[] = { 0x00, 0x00, 0xff, 0x01, 0xff, 0x7f,
/* prototypes */
int pn53x_reset_settings (struct nfc_device *pnd);
bool pn53x_writeback_register (struct nfc_device *pnd);
int pn53x_writeback_register (struct nfc_device *pnd);
nfc_modulation pn53x_ptt_to_nm (const pn53x_target_type ptt);
pn53x_modulation pn53x_nm_to_pm (const nfc_modulation nm);
@ -106,9 +106,10 @@ pn53x_reset_settings(struct nfc_device *pnd)
int
pn53x_transceive (struct nfc_device *pnd, const uint8_t *pbtTx, const size_t szTx, uint8_t *pbtRx, size_t *pszRx, int timeout)
{
int res = 0;
if (CHIP_DATA (pnd)->wb_trigged) {
if (!pn53x_writeback_register (pnd)) {
return NFC_ECHIP;
if ((res = pn53x_writeback_register (pnd)) < 0) {
return res;
}
}
@ -132,7 +133,6 @@ pn53x_transceive (struct nfc_device *pnd, const uint8_t *pbtTx, const size_t szT
pszRx = &szRx;
}
int res;
// Call the send/receice callback functions of the current driver
if ((res = CHIP_DATA (pnd)->io->send (pnd, pbtTx, szTx, timeout)) < 0) {
return pnd->last_error;
@ -581,9 +581,10 @@ pn53x_write_register (struct nfc_device *pnd, const uint16_t ui16RegisterAddress
return NFC_SUCCESS;
}
bool
int
pn53x_writeback_register (struct nfc_device *pnd)
{
int res = 0;
// TODO Check at each step (ReadRegister, WriteRegister) if we didn't exceed max supported frame length
BUFFER_INIT (abtReadRegisterCmd, PN53x_EXTENDED_FRAME__DATA_MAX_LEN);
BUFFER_APPEND (abtReadRegisterCmd, ReadRegister);
@ -604,8 +605,8 @@ pn53x_writeback_register (struct nfc_device *pnd)
uint8_t abtRes[PN53x_EXTENDED_FRAME__DATA_MAX_LEN];
size_t szRes = sizeof(abtRes);
// It transceives the previously constructed ReadRegister command
if (pn53x_transceive (pnd, abtReadRegisterCmd, BUFFER_SIZE (abtReadRegisterCmd), abtRes, &szRes, -1) < 0) {
return false;
if ((res = pn53x_transceive (pnd, abtReadRegisterCmd, BUFFER_SIZE (abtReadRegisterCmd), abtRes, &szRes, -1)) < 0) {
return res;
}
size_t i = 0;
if (CHIP_DATA(pnd)->type == PN533) {
@ -642,11 +643,11 @@ pn53x_writeback_register (struct nfc_device *pnd)
if (BUFFER_SIZE (abtWriteRegisterCmd) > 1) {
// We need to write some registers
if (pn53x_transceive (pnd, abtWriteRegisterCmd, BUFFER_SIZE (abtWriteRegisterCmd), NULL, NULL, -1) < 0) {
return false;
if ((res = pn53x_transceive (pnd, abtWriteRegisterCmd, BUFFER_SIZE (abtWriteRegisterCmd), NULL, NULL, -1)) < 0) {
return res;
}
}
return true;
return NFC_SUCCESS;
}
int