CLPort

Check if a contactless card is present.

Deactivates the contactless interface, turning off the radio frequency (RF) field. This function should be called to conserve power when contactless functionality is not actively being used. If there is an active communication with a card, this function will terminate it.

Powers on the Contactless interface. This function activates the contactless reader, making it ready to interact with contactless cards. It should be called before attempting any operations like polling for cards or sending APDU commands.

Sends an Application Protocol Data Unit (APDU) command to the contactless card and retrieves the response.