Add NFCIP (NDEP) as experimental feature (Thanks to Fkooman).

src/target.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include "libnfc.h"
+
+int main(int argc, const char *argv[])
+{
+  byte_t abtRecv[MAX_FRAME_LEN];
+  uint32_t uiRecvBits;
+  byte_t send[] = "Hello Mars!";
+  dev_info *pdi = nfc_connect();
+
+  if (!pdi || !nfc_target_init(pdi, abtRecv, &uiRecvBits)) {
+    printf("unable to connect or initialize\n");
+    return 1;
+  }
+
+  if (!nfc_target_receive_dep_bytes(pdi, abtRecv, &uiRecvBits)) {
+    printf("unable to receive data\n");
+    return 1;
+  }
+  abtRecv[uiRecvBits] = 0;
+  printf("Received: %s\n", abtRecv);
+  printf("Sending : %s\n", send);
+
+  if (!nfc_target_send_dep_bytes(pdi, send, 11)) {
+    printf("unable to send data\n");
+    return 1;
+  }
+
+  nfc_disconnect(pdi);
+  return 0;
+}