Khakimov Rishat / Mbed OS Kurs

87ty78ot7iyu

Dependencies:   HCSR04

Diff: main.cpp

Revision:
72:b4761c52cc91
Parent:
71:a0fbcc153b55
Child:
74:af086eac5e99
--- a/main.cpp	Tue Jul 24 15:15:02 2018 +0100
+++ b/main.cpp	Thu Jul 26 13:00:03 2018 +0100
@@ -169,6 +169,10 @@
 #endif
 
     wifi = WiFiInterface::get_default_instance();
+    if (!wifi) {
+        printf("ERROR: No WiFiInterface found.\n");
+        return -1;
+    }
 
     count = scan_demo(wifi);
     if (count == 0) {