Question

You want to design a digital watch using the private timer. Write the code with ARM assembly and C. Make your own decision on the language selection (Assembly and C). The followings are the coding requirements: Every second, the time information (hour minute second) should be sent to the UART terminal on PC The time starts from 00: 00: 00 Use some special ASCII characters to return back the cursor to the first column, when you display a new time. (That is, you don't want to use the next line to display a new time) The private timer should be used to check each second.

Answer 1

/

/ C implementation of digital clock

#include <stdio.h>

#include <time.h>

  

// driver code

int main()

{

    time_t s, val = 1;

    struct tm* current_time;

  

    // time in seconds

    s = time(NULL);

  

    // to get current time

    current_time = localtime(&s);

  

    // print time in minutes,

    // hours and seconds

    printf("%02d:%02d:%02d",

           current_time->tm_hour,

           current_time->tm_min,

           current_time->tm_sec);

  

    return 0;

}