Add freefare_selected_tag_is_present()

promovicz · Jan 27, 2014 · e797ee2 · e797ee2
1 parent 9ee3687
commit e797ee2
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diff --git a/libfreefare/freefare.c b/libfreefare/freefare.c
@@ -192,6 +192,14 @@ freefare_get_tag_uid (MifareTag tag)
  return res;
 }
 
+/*
+ * Returns true if last selected tag is still present.
+ */
+bool freefare_selected_tag_is_present(nfc_device *device)
+{
+ return (nfc_initiator_target_is_present(device, NULL) == NFC_SUCCESS);
+}
+
 /*
  * Free the provided tag.
  */

diff --git a/libfreefare/freefare.h b/libfreefare/freefare.h
@@ -59,6 +59,7 @@ const char *freefare_get_tag_friendly_name (MifareTag tag);
 char *freefare_get_tag_uid (MifareTag tag);
 void freefare_free_tag (MifareTag tag);
 void freefare_free_tags (MifareTag *tags);
+bool freefare_selected_tag_is_present(nfc_device *device);
 
 const char *freefare_strerror (MifareTag tag);
 int freefare_strerror_r (MifareTag tag, char *buffer, size_t len);