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Altera_Forum
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10 years ago

Cyclone V, System Time after Reset

hi everybody,

I've got a Cyclone V Dev.- Board (Model: E), with a NIOS 2 Processor.

I want to read out the System Time from the Dev- Board, and want to set the System Time to the Dev- Board, that the Dev's time is the actual Date and Time.

After i reset the Board, the kit should show me the actual date and time via c-code.

Often i tried things like settimeofday() and gettimeofday() in different variants (tried "localtime" too), but doesnt work (i can show you the code if relevant)

After a power down and a power up again, the Board just showed me the first january 1970, 0:00:00. There is plugged a new CR2032 Battery under the LCD- Screen.

The NIOS 2 Processor is not configurated for the systemTime, but i think, it doesnt matter.

My next idea would be, that i set the system time via the altera BTS, but Its not sure, if the BTS supports the set- method.

Does anybody have an idea?

Thank you.

Best regards,

Thomas

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    +Additionaly to above: I am using a single- Thread - System, not a multithreading system. System in C- Code is creating via NIOS II 14.0

    Now i found out that in "System.h" there is a Define called SYSTEM_TIMER_ALWAYS_RUN. Maybe, this should be enabled? It's set to 0 at the moment.

    Other idea: Normally you should start the avalon timer once, set the actual time in the avalon_timer, then set SYSTEM_TIMER_ALWAYS_RUN to 1, and you could ask for the actual seconds, so you get the time.

    Is this way right?