Add getTime to retrieve system time from WINC

Author: sandeepmistry

keywords.txt

@@ -40,6 +40,7 @@ encryptionType	KEYWORD2
 getResult	KEYWORD2
 getSocket	KEYWORD2
 poll	KEYWORD2
+getTime	KEYWORD2
 WiFiClient	KEYWORD2
 WiFiServer	KEYWORD2
 WiFiSSLClient	KEYWORD2

src/WiFi.cpp

@@ -17,6 +17,8 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
+#include <time.h>
+
 #include "WiFi101.h"
 
 extern "C" {
@@ -160,6 +162,23 @@ static void wifi_cb(uint8_t u8MsgType, void *pvMsg)
 		}
 		break;
 
+		case M2M_WIFI_RESP_GET_SYS_TIME:
+		{
+			struct tm tm;
+			tstrSystemTime *pstrSystemTime = (tstrSystemTime *)pvMsg;
+
+			tm.tm_year = pstrSystemTime->u16Year - 1900;
+			tm.tm_mon = pstrSystemTime->u8Month - 1;
+			tm.tm_mday = pstrSystemTime->u8Day;
+			tm.tm_hour = pstrSystemTime->u8Hour;
+			tm.tm_min = pstrSystemTime->u8Minute;
+			tm.tm_sec = pstrSystemTime->u8Second;
+			tm.tm_isdst = -1;
+
+			WiFi._resolve = mktime(&tm);
+		}
+		break;
+
 		default:
 		break;
 	}
@@ -891,4 +910,18 @@ int WiFiClass::ping(IPAddress host, uint8_t ttl)
 	}
 }
 
+uint32_t WiFiClass::getTime()
+{
+	_resolve = (uint32_t)-1;
+
+	m2m_wifi_get_sytem_time();
+
+	unsigned long start = millis();
+	while (_resolve == ((uint32_t)-1) && millis() - start < 5000) {
+		m2m_wifi_handle_events(NULL);
+	}
+
+	return _resolve;
+}
+
 WiFiClass WiFi;

src/WiFi101.h

@@ -156,6 +156,8 @@ class WiFiClass
 	int ping(const String &hostname, uint8_t ttl = 128);
 	int ping(IPAddress host, uint8_t ttl = 128);
 
+	unsigned long getTime();
+
 	void refresh(void);
 
 	void lowPowerMode(void);