Merge pull request sirleech#36 from edvler/master

Update for Web_Net_Setup

examples/Web_Net_Setup/System.cpp

@@ -0,0 +1,59 @@
+#include "Arduino.h"
+#include "System.h"
+
+char* System::uptime()
+{
+  char buffer[65];
+
+  long days=0;
+  long hours=0;
+  long mins=0;
+  long secs=0;
+
+  secs = millis()/1000; //convect milliseconds to seconds
+  mins=secs/60; //convert seconds to minutes
+  hours=mins/60; //convert minutes to hours
+  days=hours/24; //convert hours to days
+  secs=secs-(mins*60); //subtract the coverted seconds to minutes in order to display 59 secs max 
+  mins=mins-(hours*60); //subtract the coverted minutes to hours in order to display 59 minutes max
+  hours=hours-(days*24); //subtract the coverted hours to days in order to display 23 hours max
+
+  if (days > 0) {
+    ltoa(days,buffer,10);
+    strcpy(retval,buffer);
+  } 
+  else {
+    strcpy(retval,"0");
+  }
+
+  strcat(retval,":");
+  ltoa(hours,buffer,10);
+  strcat(retval,buffer);
+
+  strcat(retval,":");
+  ltoa(mins,buffer,10);
+  strcat(retval,buffer);
+
+  strcat(retval,":");
+  ltoa(secs,buffer,10);
+  strcat(retval,buffer);
+
+  strcat(retval,'\0');
+
+  return retval;
+}
+
+int System::ramFree () {
+  extern int __heap_start, *__brkval; 
+  int v;
+  int a = (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval); 
+  return a;
+}
+
+int System::ramSize() {
+  int v;
+  int a = (int) &v;  
+  return a;
+}
+
+

examples/Web_Net_Setup/System.h

@@ -0,0 +1,39 @@
+#ifndef System_h
+#define System_h
+
+#include <Arduino.h>
+
+/**
+* System Class.
+*
+* @author Matthias Maderer
+* @version 1.1.7
+*/
+class System {
+public:
+  /**
+  * Returns the uptime of the arduino with a char pointer.
+  * Format: DAYS:HOURS:MINUTES:SECONDS
+  * Sample: 1:20:23:50 = 1 day, 20 hours, 23 minutes and 50 seconds
+  * @return char *: pointer!
+  */
+  char * uptime();
+
+  /**
+  * Returns the free RAM
+  * @return int: free RAM
+  */ 
+  int ramFree();
+
+  /**
+  * Returns the size of the RAM
+  * @return int: RAM size
+  */ 
+  int ramSize();
+
+private:
+  char retval[25];
+};
+
+#endif
+