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Set Current Time with time() and ctime()

Mel W

Hi All,

I want to set the RTC time to the current time and date without hard-coding it.

I tried to use the function time() and ctime() defined in time.h, but I read that time() is a semihosted function (http://www.keil.com/support/man/docs/armlib/armlib_chr1359122861930.htm)

#include <time.h>

time_t rawtime;
char buffer[50] ={0};

time(&rawtime);
sprintf (buffer, "%s", ctime(&rawtime) );

So if I include time(&rawtime), then the program stops with BKPT 0xAB (indicating semihosting) and if I don't include it then the buffer displays 00:00 1 Jan 1970.

So my question is, how do I write the retarget.c to use the time function? I read a lot of examples on retargeting printf, but can't find anything on time().

Or what is the normal way of setting the current date/time?

Thank you.

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