mbed_example / Mbed OS time_HelloWorld

time Hello World

Fork of time_HelloWorld by Mbed

Use

The time interface is used to access the Real Time Clock (RTC). The time is set as an offset measured in seconds from the time epoch, which is library specific. In general the accepted time epoch is the Unix Epoch. An online converter between human readable time and Unix Epoch time is handy, try this one. If the system is not battery powered then on each reset the rtc time will be reset. Make sure to either provide battery power to keep the time or to reset it each time the device is run.

API

There is no official time API, instead you use the functions in the example code.

Files at this revision

API Documentation at this revision

Revision 5:0c6401d671c6, committed 2018-10-23

Comitter:
Przemyslaw Stekiel
Date:
Tue Oct 23 12:08:10 2018 +0200
Parent:
4:3d395620e01a
Commit message:
fix compiler warning

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Fri Jun 23 16:54:10 2017 -0500
+++ b/main.cpp	Tue Oct 23 12:08:10 2018 +0200
@@ -21,7 +21,7 @@
     while (true) {
         time_t seconds = time(NULL);
         
-        printf("Time as seconds since January 1, 1970 = %d\n", seconds);
+        printf("Time as seconds since January 1, 1970 = %u\n", (unsigned int)seconds);
         
         printf("Time as a basic string = %s", ctime(&seconds));