QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Hardware vs. software clock |
| Ref. No. |
QNX.000009635 |
| Category(ies) |
Configuration |
| Issue |
We're having two QNX problems that seem to be similar:
1) We are changing the system time from the lower right-hand corner of the Photon GUI. It accepts the change, but when we reset or power-cycle the computer, it forgets the change and goes back to the old time.
2) We changed the system time using the clock_settime() function. It accepts the change, but when we reset or power-cycle the computer, it forgets the change and goes back to the old time.
|
| Solution |
Changing the time by clicking on the time in Photon changes just the software clock, not the hardware clock. The same thing holds true for the clock_settime() function. To change the hardware clock use the 'rtc' utility (see docs for rtc). |
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