Revision 0:57aacc22012b, committed 2019-01-08

Comitter:

jimbaud

Date:

Tue Jan 08 10:33:50 2019 +0000

Commit message:

he RTC (Real-Time Clock) class provides mechanisms to set the current time of the hardware RTC with set_time API. The time is set as an offset measured in seconds from the time epoch (Unix Epoch - January 1, 1970).

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Main.cpp	Tue Jan 08 10:33:50 2019 +0000
@@ -0,0 +1,44 @@
+/*  https://os.mbed.com/docs/v5.7/reference/rtc.html
+    The RTC (Real-Time Clock) class provides mechanisms to set the current time of the hardware RTC with set_time API. The time is set as an offset measured in seconds from the time epoch (Unix Epoch - January 1, 1970).
+    
+    https://fr.wikipedia.org/wiki/Heure_Unix
+    
+    https://www.epochconverter.com/programming/c
+    
+    You can use the attach_rtc API to hook external RTC for using C time functions. It provides you with init(), read(), write() and isenabled() functions to be attached. Time provides more information about C date and time standard library functions.
+    RTC class APIs are thread safe. RTC can keep track of time even in a powered down state if the secondary source of power (battery) is connected.
+
+    https://os.mbed.com/blog/entry/103/
+    
+*/
+
+#include "mbed.h"
+
+int main() {
+
+                // Set the current time from the terminal
+
+            struct tm t;
+            printf("Enter current date and time:\n");
+            printf("YYYY MM DD HH MM SS[enter]\n");
+            scanf("%d %d %d %d %d %d", &t.tm_year, &t.tm_mon, &t.tm_mday, &t.tm_hour, &t.tm_min, &t.tm_sec);
+
+                // Adjust for tm structure required values
+            t.tm_year = t.tm_year - 1900;
+            t.tm_mon = t.tm_mon - 1;
+                
+                // Set the time
+            set_time(mktime(&t));
+
+                // Display the time
+
+    while(1) {
+                time_t seconds = time(NULL);
+                printf("Time as a basic string = %s", ctime(&seconds));
+                wait(1);
+                char buffer[32];
+                strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds));
+                printf("Time as a custom formatted string = %s", buffer);
+                wait(1);
+            }
+        }
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Jan 08 10:33:50 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/3a7713b1edbc
\ No newline at end of file