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Merge pull request #10 from janecker/nfc-improvements

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Improves NFC Tag handling
This commit is contained in:
Manuel Weiser 2025-03-01 10:03:46 +01:00 committed by GitHub
commit bce2ad2ed8
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GPG Key ID: B5690EEEBB952194
1 changed files with 51 additions and 38 deletions
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37
src/nfc.cpp
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@ -93,8 +93,16 @@ bool formatNdefTag() {
return success; return success;
} }
uint16_t readTagSize()
{
uint8_t buffer[4];
memset(buffer, 0, 4);
nfc.ntag2xx_ReadPage(3, buffer);
return buffer[2]*8;
}
uint8_t ntag2xx_WriteNDEF(const char *payload) { uint8_t ntag2xx_WriteNDEF(const char *payload) {
uint8_t tagSize = 240; // 144 bytes is maximum for NTAG213 uint16_t tagSize = readTagSize();
Serial.print("Tag Size: ");Serial.println(tagSize); Serial.print("Tag Size: ");Serial.println(tagSize);
uint8_t pageBuffer[4] = {0, 0, 0, 0}; uint8_t pageBuffer[4] = {0, 0, 0, 0};
@ -369,21 +377,19 @@ void scanRfidTask(void * parameter) {
if (uidLength == 7) if (uidLength == 7)
{ {
uint8_t data[256]; uint16_t tagSize = readTagSize();
if(tagSize > 0)
{
// Create a buffer depending on the size of the tag
uint8_t* data = (uint8_t*)malloc(tagSize);
memset(data, 0, tagSize);
// We probably have an NTAG2xx card (though it could be Ultralight as well) // We probably have an NTAG2xx card (though it could be Ultralight as well)
Serial.println("Seems to be an NTAG2xx tag (7 byte UID)"); Serial.println("Seems to be an NTAG2xx tag (7 byte UID)");
for (uint8_t i = 0; i < 45; i++) { uint8_t numPages = readTagSize()/4;
/* for (uint8_t i = 4; i < 4+numPages; i++) {
if (i < uidLength) { if (!nfc.ntag2xx_ReadPage(i, data+(i-4) * 4))
uidString += String(uid[i], HEX);
if (i < uidLength - 1) {
uidString += ":"; // Optional: Trennzeichen hinzufügen
}
}
*/
if (!nfc.mifareclassic_ReadDataBlock(i, data + (i - 4) * 4))
{ {
break; // Stop if reading fails break; // Stop if reading fails
} }
@ -409,6 +415,13 @@ void scanRfidTask(void * parameter) {
hasReadRfidTag = 1; hasReadRfidTag = 1;
} }
free(data);
}
else
{
oledShowMessage("NFC-Tag read error");
hasReadRfidTag = 2;
}
} }
else else
{ {