MfRc522.IsCardPresent Method
Definition
Important
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Overloads
| IsCardPresent(Byte[]) |
Check if a new card is present. |
| IsCardPresent(Byte[], Boolean) |
Check if a new card is present. |
IsCardPresent(Byte[])
Check if a new card is present.
public bool IsCardPresent (byte[] atqa);member this.IsCardPresent : byte[] -> boolPublic Function IsCardPresent (atqa As Byte()) As BooleanParameters
- atqa
- Byte[]
ATQA buffer must be 2 bytes length and will contain the ATQA answer if there is a card.
Returns
true if there is a card, else false.
Applies to
IsCardPresent(Byte[], Boolean)
Check if a new card is present.
public bool IsCardPresent (byte[] atqa, bool reselect = false);member this.IsCardPresent : byte[] * bool -> boolPublic Function IsCardPresent (atqa As Byte(), Optional reselect As Boolean = false) As BooleanParameters
- atqa
- Byte[]
ATQA buffer must be 2 bytes length and will contain the ATQA answer if there is a card.
- reselect
- Boolean
true if this is reselecting an existing card (e.g., after a halt)
Returns
true if there is a card, else false.