GSM::getLocalTime() (#47)

Added GSM::getLocalTime() function.

Author: FrancMunoz

keywords.txt

@@ -55,6 +55,7 @@ getvoiceCallStatus	KEYWORD2
 hostByName	KEYWORD2
 ping	KEYWORD2
 getTime	KEYWORD2
+getLocalTime	KEYWORD2
 lowPowerMode	KEYWORD2
 noLowPowerMode	KEYWORD2
 peekDTMF	KEYWORD2

src/GSM.cpp

@@ -344,6 +344,25 @@ unsigned long GSM::getTime()
   return 0;
 }
 
+unsigned long GSM::getLocalTime()
+{
+  String response;
+
+  MODEM.send("AT+CCLK?");
+  if (MODEM.waitForResponse(100, &response) != 1) {
+    return 0;
+  }
+
+  struct tm now;
+
+  if (strptime(response.c_str(), "+CCLK: \"%y/%m/%d,%H:%M:%S", &now) != NULL) {
+    time_t result = mktime(&now);
+    return result;
+  }
+
+  return 0;
+}
+
 int GSM::lowPowerMode()
 {
   return MODEM.lowPowerMode();

src/GSM.h

@@ -67,6 +67,7 @@ class GSM {
   int ready();
 
   unsigned long getTime();
+  unsigned long getLocalTime();
 
   int lowPowerMode();
   int noLowPowerMode();