Added Check shield present on wifi examples

Author: mlafauci

WiFi/examples/WifiChatServer/WifiChatServer.ino

@@ -42,6 +42,10 @@ void setup() {
     Serial.print("Attempting to connect to SSID: ");
     Serial.println(ssid);
     status = WiFi.begin(ssid, pass);
+        if ( status != WL_CONNECTED) { 
+      Serial.println("Couldn't get a wifi connection");
+      while(true);
+    }     
     // wait 10 seconds for connection:
     delay(10000);
   } 

WiFi/examples/WifiCosmClient/WifiCosmClient.ino

@@ -54,6 +54,10 @@ void setup() {
     Serial.print("Attempting to connect to SSID: ");
     Serial.println(ssid);
     status = WiFi.begin(ssid, pass);
+    if ( status != WL_CONNECTED) { 
+      Serial.println("Couldn't get a wifi connection");
+      while(true);
+    } 
     // wait 10 seconds for connection:
     delay(10000);
   } 

WiFi/examples/WifiCosmClientString/WifiCosmClientString.ino

@@ -59,6 +59,10 @@ void setup() {
     Serial.print("Attempting to connect to SSID: ");
     Serial.println(ssid);
     status = WiFi.begin(ssid, pass);
+    if ( status != WL_CONNECTED) { 
+      Serial.println("Couldn't get a wifi connection");
+      while(true);
+    } 
     // wait 10 seconds for connection:
     delay(10000);
   } 

WiFi/examples/WifiTwitterClient/WifiTwitterClient.ino

@@ -57,6 +57,10 @@ void setup() {
     Serial.print("Attempting to connect to SSID: ");
     Serial.println(ssid);
     status = WiFi.begin(ssid, pass);
+    if ( status != WL_CONNECTED) { 
+      Serial.println("Couldn't get a wifi connection");
+      while(true);
+    }     
     // wait 10 seconds for connection:
     delay(10000);
   } 

WiFi/examples/WifiWebClient/WifiWebClient.ino

@@ -47,6 +47,10 @@ void setup() {
     Serial.print("Attempting to connect to SSID: ");
     Serial.println(ssid);
     status = WiFi.begin(ssid, pass);
+    if ( status != WL_CONNECTED) { 
+      Serial.println("Couldn't get a wifi connection");
+      while(true);
+    }     
     // wait 10 seconds for connection:
     delay(10000);
   } 

WiFi/examples/WifiWebClientRepeating/WifiWebClientRepeating.ino

@@ -43,6 +43,10 @@ void setup() {
     Serial.print("Attempting to connect to SSID: ");
     Serial.println(ssid);
     status = WiFi.begin(ssid, pass);
+    if ( status != WL_CONNECTED) { 
+      Serial.println("Couldn't get a wifi connection");
+      while(true);
+    } 
     // wait 10 seconds for connection:
     delay(10000);
   } 

WiFi/utility/wifi_drv.cpp

@@ -75,7 +75,7 @@ int8_t WiFiDrv::wifiSetNetwork(char* ssid, uint8_t ssid_len)
     if (!SpiDrv::waitResponseCmd(SET_NET_CMD, PARAM_NUMS_1, &_data, &_dataLen))
     {
         WARN("error waitResponse");
-        return WL_FAILURE;
+        _data = WL_FAILURE;
     }
     SpiDrv::spiSlaveDeselect();
 
@@ -99,7 +99,7 @@ int8_t WiFiDrv::wifiSetPassphrase(char* ssid, uint8_t ssid_len, const char *pass
     if (!SpiDrv::waitResponseCmd(SET_PASSPHRASE_CMD, PARAM_NUMS_1, &_data, &_dataLen))
     {
         WARN("error waitResponse");
-        return WL_FAILURE;
+        _data = WL_FAILURE;
     }
     SpiDrv::spiSlaveDeselect();
     return _data;
@@ -124,7 +124,7 @@ int8_t WiFiDrv::wifiSetKey(char* ssid, uint8_t ssid_len, uint8_t key_idx, const
     if (!SpiDrv::waitResponseCmd(SET_KEY_CMD, PARAM_NUMS_1, &_data, &_dataLen))
     {
         WARN("error waitResponse");
-        return WL_FAILURE;
+        _data = WL_FAILURE;
     }
     SpiDrv::spiSlaveDeselect();
     return _data;
@@ -319,12 +319,12 @@ int8_t WiFiDrv::startScanNetworks()
     if (!SpiDrv::waitResponseCmd(START_SCAN_NETWORKS, PARAM_NUMS_1, &_data, &_dataLen))
      {
          WARN("error waitResponse");
-         return WL_FAILURE;
+         _data = WL_FAILURE;
      }
 
     SpiDrv::spiSlaveDeselect();
 
-    return WL_SUCCESS;
+    return (_data == WL_FAILURE)? _data : WL_SUCCESS;
 }