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edit approved Dec 9, 2020 at 11:40
ocrdu
edit approved Dec 9, 2020 at 11:40
ocrdu
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Michel Keijzers
Michel Keijzers
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 for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ");
    Serial.print(mfrc522.uid.uidByte{i}, HEX);
    content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "));
    content.concat(String(mfrc522.uid.uidByte{i}, HEX));
  }

I use this code to get UID of an RFID card, but the error "expected ')' before '{' token""expected ')' before '{' token" comes out. Does anybody know how to solve this problem?

 for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ");
    Serial.print(mfrc522.uid.uidByte{i}, HEX);
    content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "));
    content.concat(String(mfrc522.uid.uidByte{i}, HEX));
  }

I use this code to get UID of an RFID card, but the error "expected ')' before '{' token" comes out. Does anybody know how to solve this problem?

 for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ");
    Serial.print(mfrc522.uid.uidByte{i}, HEX);
    content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "));
    content.concat(String(mfrc522.uid.uidByte{i}, HEX));
  }

I use this code to get UID of an RFID card, but the error "expected ')' before '{' token" comes out. Does anybody know how to solve this problem?

added 30 characters in body
Source Link
Michel Keijzers
Michel Keijzers
  • 13k
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  • 59
 for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ");
    Serial.print(mfrc522.uid.uidByte{i}, HEX);
    content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "));
    content.concat(String(mfrc522.uid.uidByte{i}, HEX));
  }

for (byte i = 0; i < mfrc522.uid.size; i++) { Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "); Serial.print(mfrc522.uid.uidByte{i}, HEX); content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ")); content.concat(String(mfrc522.uid.uidByte{i}, HEX)); } II use this code to get UID of an RFID card, but the error "expected ')' before '{' token" comes out. Does anybody know how to solve this problem?

for (byte i = 0; i < mfrc522.uid.size; i++) { Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "); Serial.print(mfrc522.uid.uidByte{i}, HEX); content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ")); content.concat(String(mfrc522.uid.uidByte{i}, HEX)); } I use this code to get UID of an RFID card, but the error "expected ')' before '{' token" comes out. Does anybody know how to solve this problem?

 for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    Serial.print(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " ");
    Serial.print(mfrc522.uid.uidByte{i}, HEX);
    content.concat(String(mfrc522.uid.uidByte{i} < 0x10 ? " 0" : " "));
    content.concat(String(mfrc522.uid.uidByte{i}, HEX));
  }

I use this code to get UID of an RFID card, but the error "expected ')' before '{' token" comes out. Does anybody know how to solve this problem?

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Tingkai Yan
Tingkai Yan
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