ENSMM / Mbed 2 deprecated RTC

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).

Dependencies:   mbed

Fork of RTC by Joël Imbaud

Main.cpp@0:57aacc22012b, 2019-01-08 (annotated)

Committer:
jimbaud
Date:
Tue Jan 08 10:33:50 2019 +0000
Revision:
0:57aacc22012b
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).

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jimbaud 0:57aacc22012b 1 /* https://os.mbed.com/docs/v5.7/reference/rtc.html
jimbaud 0:57aacc22012b 2 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).
jimbaud 0:57aacc22012b 3
jimbaud 0:57aacc22012b 4 https://fr.wikipedia.org/wiki/Heure_Unix
jimbaud 0:57aacc22012b 5
jimbaud 0:57aacc22012b 6 https://www.epochconverter.com/programming/c
jimbaud 0:57aacc22012b 7
jimbaud 0:57aacc22012b 8 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.
jimbaud 0:57aacc22012b 9 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.
jimbaud 0:57aacc22012b 10
jimbaud 0:57aacc22012b 11 https://os.mbed.com/blog/entry/103/
jimbaud 0:57aacc22012b 12
jimbaud 0:57aacc22012b 13 */
jimbaud 0:57aacc22012b 14
jimbaud 0:57aacc22012b 15 #include "mbed.h"
jimbaud 0:57aacc22012b 16
jimbaud 0:57aacc22012b 17 int main() {
jimbaud 0:57aacc22012b 18
jimbaud 0:57aacc22012b 19 // Set the current time from the terminal
jimbaud 0:57aacc22012b 20
jimbaud 0:57aacc22012b 21 struct tm t;
jimbaud 0:57aacc22012b 22 printf("Enter current date and time:\n");
jimbaud 0:57aacc22012b 23 printf("YYYY MM DD HH MM SS[enter]\n");
jimbaud 0:57aacc22012b 24 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);
jimbaud 0:57aacc22012b 25
jimbaud 0:57aacc22012b 26 // Adjust for tm structure required values
jimbaud 0:57aacc22012b 27 t.tm_year = t.tm_year - 1900;
jimbaud 0:57aacc22012b 28 t.tm_mon = t.tm_mon - 1;
jimbaud 0:57aacc22012b 29
jimbaud 0:57aacc22012b 30 // Set the time
jimbaud 0:57aacc22012b 31 set_time(mktime(&t));
jimbaud 0:57aacc22012b 32
jimbaud 0:57aacc22012b 33 // Display the time
jimbaud 0:57aacc22012b 34
jimbaud 0:57aacc22012b 35 while(1) {
jimbaud 0:57aacc22012b 36 time_t seconds = time(NULL);
jimbaud 0:57aacc22012b 37 printf("Time as a basic string = %s", ctime(&seconds));
jimbaud 0:57aacc22012b 38 wait(1);
jimbaud 0:57aacc22012b 39 char buffer[32];
jimbaud 0:57aacc22012b 40 strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds));
jimbaud 0:57aacc22012b 41 printf("Time as a custom formatted string = %s", buffer);
jimbaud 0:57aacc22012b 42 wait(1);
jimbaud 0:57aacc22012b 43 }
jimbaud 0:57aacc22012b 44 }