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Check if device is opened before scanning

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Ondrej Mikle 2014-07-19 17:00:10 +02:00
parent 7de37d5822
commit e11b8aaabf
1 changed files with 4 additions and 0 deletions
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4
brmdoor_nfc.cpp
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@ -65,6 +65,10 @@ std::string NFCDevice::scanUID() throw(NFCError)
int res; int res;
nfc_target nt; nfc_target nt;
if (!opened()) {
throw NFCError("NFC device not opened");
}
res = nfc_initiator_poll_target(_nfcDevice, _modulations, _modulationsLen, pollNr, pollPeriod, &nt); res = nfc_initiator_poll_target(_nfcDevice, _modulations, _modulationsLen, pollNr, pollPeriod, &nt);
if (res < 0) { if (res < 0) {
throw NFCError("NFC polling error"); throw NFCError("NFC polling error");