Tu Tri Huynh / Mbed OS DISCO-F746NG_light_control_system_tth

School project.

Dependencies:   Timezone NTPClient BSP_DISCO_F746NG Grove_temperature

time_functions.h@17:01ebfd8ab87a, 2021-01-20 (annotated)

Committer:
tuxx0046
Date:
Wed Jan 20 14:22:46 2021 +0000
Revision:
17:01ebfd8ab87a
Child:
18:11db143c0502
Added clock functionality to view on display.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tuxx0046 17:01ebfd8ab87a 1 /**
tuxx0046 17:01ebfd8ab87a 2 @file time_functions.h
tuxx0046 17:01ebfd8ab87a 3 @author Tu Tri Huynh
tuxx0046 17:01ebfd8ab87a 4 @date January 20, 2021
tuxx0046 17:01ebfd8ab87a 5 @brief Functions related to getting and displaying the time
tuxx0046 17:01ebfd8ab87a 6 */
tuxx0046 17:01ebfd8ab87a 7
tuxx0046 17:01ebfd8ab87a 8 /**
tuxx0046 17:01ebfd8ab87a 9 Connects to an NTP server and updates the time to display.
tuxx0046 17:01ebfd8ab87a 10 Currently only works with UTC time.
tuxx0046 17:01ebfd8ab87a 11 1/20/2021
tuxx0046 17:01ebfd8ab87a 12 */
tuxx0046 17:01ebfd8ab87a 13 void time_update_current_time()
tuxx0046 17:01ebfd8ab87a 14 {
tuxx0046 17:01ebfd8ab87a 15 char current_time[32];
tuxx0046 17:01ebfd8ab87a 16 /// Ethernet connection declared in main.cpp
tuxx0046 17:01ebfd8ab87a 17 eth.connect();
tuxx0046 17:01ebfd8ab87a 18
tuxx0046 17:01ebfd8ab87a 19 if (ntp.setTime("0.pool.ntp.org") == 0)
tuxx0046 17:01ebfd8ab87a 20 {
tuxx0046 17:01ebfd8ab87a 21 printf("Time successfully retrieved\n");
tuxx0046 17:01ebfd8ab87a 22 }
tuxx0046 17:01ebfd8ab87a 23 else
tuxx0046 17:01ebfd8ab87a 24 {
tuxx0046 17:01ebfd8ab87a 25 printf("Failed to retrieve time from NTP server.\n");
tuxx0046 17:01ebfd8ab87a 26 }
tuxx0046 17:01ebfd8ab87a 27
tuxx0046 17:01ebfd8ab87a 28 eth.disconnect();
tuxx0046 17:01ebfd8ab87a 29 while(1)
tuxx0046 17:01ebfd8ab87a 30 {
tuxx0046 17:01ebfd8ab87a 31 time_t seconds = time(NULL);
tuxx0046 17:01ebfd8ab87a 32
tuxx0046 17:01ebfd8ab87a 33 char buffer[32];
tuxx0046 17:01ebfd8ab87a 34 strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds));
tuxx0046 17:01ebfd8ab87a 35 //printf("Time as a custom formatted string = %s", buffer);
tuxx0046 17:01ebfd8ab87a 36 sprintf(current_time, "%s", buffer);
tuxx0046 17:01ebfd8ab87a 37 lcd_update_upper_left(current_time);
tuxx0046 17:01ebfd8ab87a 38
tuxx0046 17:01ebfd8ab87a 39 ThisThread::sleep_for(20s);
tuxx0046 17:01ebfd8ab87a 40 }
tuxx0046 17:01ebfd8ab87a 41 }