RTC_SET_TIME is not working

swapnildixit · 12-06-2011, 05:07 AM

My RTC_SET_TIME is not working with current month december. I am passing all the required values like year, month, day, hour, minutes, seconds with in a structure to ioctl RTC_SET_TIME.
retval = ioctl(fd, RTC_SET_TIME, &set_rtc_tm);
if (retval == -1)
{
printf("\nRTC set time IOCTL Fail\n");
return RTC_FAIL;
}

smallpond · 12-07-2011, 11:42 AM

You are missing two things:

1) Just above this you called fd = open(...). Please tell me that you checked fd != -1.

2) Change: printf("\nRTC set time IOCTL Fail\n");
to: perror("\nRTC set time IOCTL Fail");

This will print a more useful indication than "not working". Are you running this as root?