David Smart / TimeInterface

A time interface class. This class replicates the normal time functions, but goes a couple of steps further. mbed library 82 and prior has a defective gmtime function. Also, this class enables access to setting the time, and adjusting the accuracy of the RTC.

Dependencies:   CalendarPage

Dependents:   CI-data-logger-server WattEye X10Svr SSDP_Server

Diff: TimeInterface.cpp

Revision:
13:17e1f5bb9b0e
Parent:
7:1de342fa7840
--- a/TimeInterface.cpp	Mon Apr 11 02:22:45 2016 +0000
+++ b/TimeInterface.cpp	Thu May 19 18:13:09 2016 +0000
@@ -197,7 +197,7 @@
 
 struct tm_ex * TimeInterface::gmtime(const time_t * timer)
 {
-    time_t priv = *timer + get_tzo_min() * 60 + dst * 3600;
+    time_t priv = *timer; // + get_tzo_min() * 60 + dst * 3600;
     struct tm * tmp = std::localtime(&priv);
     
     tm_ext.tm_sec     = tmp->tm_sec;
@@ -237,7 +237,13 @@
 
 size_t TimeInterface::strftime(char * ptr, size_t maxsize, const char * format, const struct tm_ex * timeptr)
 {
-    return std::strftime(ptr, maxsize, format, (struct tm *)timeptr);
+    size_t r = std::strftime(ptr, maxsize, format, (struct tm *)timeptr);
+    // strftime looks like it should return "GMT" on the tail, but doesn't.
+    if (strstr(format,"%Z") && strlen(ptr) + 3 < maxsize) {
+        strcat(ptr, "GMT");
+        r += 3;
+    }
+    return r;
 }
 
 double TimeInterface::difftime(time_t end, time_t beginning)