check result of nfc_initiator_init() function in examples/ and utils/

examples/doc/quick_start_example1.c

@@ -26,7 +26,10 @@ main (int argc, const char *argv[])
     return EXIT_FAILURE;
   }
   // Set connected NFC device to initiator mode
-  nfc_initiator_init (pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
   printf ("Connected to NFC reader: %s\n", nfc_device_get_name (pnd));
 

examples/nfc-anticol.c

@@ -157,7 +157,10 @@ main (int argc, char *argv[])
   }
 
   // Initialise NFC device as "initiator"
-  nfc_initiator_init (pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
   // Configure the CRC
   if (nfc_device_set_property_bool (pnd, NP_HANDLE_CRC, false) < 0) {

examples/nfc-poll.c

@@ -110,7 +110,10 @@ main (int argc, const char *argv[])
     exit (EXIT_FAILURE);
   }
 
-  nfc_initiator_init (pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
   printf ("Connected to NFC reader: %s\n", nfc_device_get_name (pnd));
   printf ("NFC device will poll during %ld ms (%u pollings of %lu ms for %zd modulations)\n", (unsigned long) uiPollNr * szModulations * uiPeriod * 150, uiPollNr, (unsigned long) uiPeriod * 150, szModulations);

examples/nfc-relay.c

@@ -164,7 +164,11 @@ main (int argc, char *argv[])
 
   printf ("Connected to the NFC reader device: %s", nfc_device_get_name (pndReader));
   printf ("%s", "Configuring NFC reader settings...");
-  nfc_initiator_init (pndReader);
+  
+  if (nfc_initiator_init (pndReader) < 0) {
+    nfc_perror (pndReader, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
   if ((nfc_device_set_property_bool (pndReader, NP_HANDLE_CRC, false) < 0) ||
       (nfc_device_set_property_bool (pndReader, NP_HANDLE_PARITY, false) < 0) ||
       (nfc_device_set_property_bool (pndReader, NP_ACCEPT_INVALID_FRAMES, true)) < 0) {

examples/pn53x-sam.c

@@ -128,7 +128,10 @@ main (int argc, const char *argv[])
       nfc_target nt;
 
       // Set connected NFC device to initiator mode
-      nfc_initiator_init (pnd);
+      if (nfc_initiator_init (pnd) < 0) {
+        nfc_perror (pnd, "nfc_initiator_init");
+        exit (EXIT_FAILURE);    
+      }
 
       // Let the reader only try once to find a tag
       if (nfc_device_set_property_bool (pnd, NP_INFINITE_SELECT, false) < 0) {

examples/pn53x-tamashell.c

@@ -95,7 +95,10 @@ int main(int argc, const char* argv[])
   }
 
   printf ("Connected to NFC reader: %s\n", nfc_device_get_name (pnd));
-  nfc_initiator_init(pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
   char *cmd;
   char *prompt = "> ";

utils/nfc-list.c

@@ -130,7 +130,10 @@ main (int argc, const char *argv[])
       ERR ("%s", "Unable to connect to NFC device.");
       return EXIT_FAILURE;
     }
-    nfc_initiator_init (pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
     printf ("Connected to NFC device: %s\n", nfc_device_get_name (pnd));
 

utils/nfc-mfclassic.c

@@ -544,7 +544,10 @@ main (int argc, const char *argv[])
       exit (EXIT_FAILURE);
     }
 
-    nfc_initiator_init (pnd);
+    if (nfc_initiator_init (pnd) < 0) {
+      nfc_perror (pnd, "nfc_initiator_init");
+      exit (EXIT_FAILURE);    
+    };
 
     // Let the reader only try once to find a tag
     if (nfc_device_set_property_bool (pnd, NP_INFINITE_SELECT, false) < 0) {

utils/nfc-mfsetuid.c

@@ -186,7 +186,10 @@ main (int argc, char *argv[])
   }
 
   // Initialise NFC device as "initiator"
-  nfc_initiator_init (pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
   // Configure the CRC
   if (nfc_device_set_property_bool (pnd, NP_HANDLE_CRC, false) < 0) {

utils/nfc-mfultralight.c

@@ -211,7 +211,10 @@ main (int argc, const char *argv[])
     return 1;
   }
 
-  nfc_initiator_init (pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
 
   // Let the device only try once to find a tag
   if (nfc_device_set_property_bool (pnd, NP_INFINITE_SELECT, false) < 0) {

utils/nfc-read-forum-tag3.c

@@ -213,7 +213,10 @@ main(int argc, char *argv[])
 
   nfc_target nt;
 
-  nfc_initiator_init(pnd);
+  if (nfc_initiator_init (pnd) < 0) {
+    nfc_perror (pnd, "nfc_initiator_init");
+    exit (EXIT_FAILURE);    
+  }
   fprintf (message_stream, "Place your NFC Forum Tag Type 3 in the field...\n");
 
   int error = EXIT_SUCCESS;