QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Problems with setting system clock after reboot. |
| Ref. No. |
QNX.000003968 |
| Category(ies) |
Utilities, Configuration |
| Issue |
I am using qnx_setclock() to set the system time. After that when the system reboots, it shows the old time. I tried the same with 'date' command also to set a time. But after system reboots, it shows the old time.
How can I reslove this to show the new time after system reboots?
|
| Solution |
If you look in your sysinit file is there a line near the top that says rtc -h
If so that is where the problem is coming in.
The 'rtc' utility is explained in the Utilities Manual
http://qdn.qnx.com/support/docs/qnx4/utils/r/rtc.html
Briefly it sets the real time clock. If you use the date utility to set the time, then after that you have to run 'rtc -s' to set the time on the real time clock to what you just told it with the 'date' command.
If you make sure the line in your sysinit file is rtc -l hw and use the 'rtc -s' command when you change the time, you should have no problems. |
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