Problem with tasks switch after porting to SYS/BIOS

Tobias,

"bios.CLK.INPUTCLK is not supprted for BIOS 6", however, if you know which physical Timer is being used by BIOS you can set it through the Timer module.

var Timer = xdc.useModule("ti.sysbios.timers.timer64.Timer");
Timer.intFreqs[x].lo = 25.0;                // Change x to whichever Timer is being used.

If a task is waiting on a Mailbox, once its posted the task should run.  Could you be more specific like what's going on in the system?  Are all tasks blocked? Is your Clock running?

Judah

Judah,

ok, I corrected the timer configuration as you proposed but nothing changed. If I look at the timer registers in memory view, I see that the timer is running. I checked the value returned by CLK_getltime(). It is running much too slow, about one tick in two seconds. Something seems wrong.

This is the configuration:

var Clock = xdc.useModule('ti.sysbios.knl.Clock');
var Timer = xdc.useModule('ti.sysbios.timers.timer64.Timer');
Clock.tickSource = Clock.TickSource_TIMER;
Timer.intFreqs[0].lo = 25000000;
Clock.timerId = 0;

There is one warning:

ti.bios.CLK : Cannot change ti.sysbios.knl.Clock.timerId. Parameter changed elsewhere

What's going on in the system:

There are several worker tasks (high priority) and one init task (low priority). Each worker tasks should start running at a certain point of the init task, so I synchronize them using mailboxes. All tasks are configured statically. I see that all tasks are started by the system correctly. The worker tasks run until they go to sleep at the mailbox. The init task finally starts, posts the mailbox and sleeps in a loop until the worker task woke up and signalized that it is running. But this never happens.

This is the simplified code:

Thanks in advance for your help

Tobias

Can you post a screen shot of the Timer registers in memory?

If things are running too slow that could explain why your TSK_sleep never returns.

Judah

Here is the screenshot of the timer 0 registers.

But it's not the case, that TSK_sleep() never returns. It does return but the loop runs endless since the worker thread does not wake up on the mailbox.

Tobias

Tobias,

When you do a Mailbox_post() the first time do any of the worker tasks wake up?

I presume you are doing multiple Mailbox_post() and all the worker tasks are block on the same Mailbox?

Also you could use ROV to view why the threads are not waking up.

Judah

No, none of the tasks wakes up. And of course there is an array of mailboxes, one for each worker task. I only simplified the code to better understand what's going on.

I did not get ROV working yet, most modules say something like "ROV failed to load the module ti.sysbios.knl.Mailbox" although the path is set and the project compiles without errors.

Any other ideas?

Thanks

Tobias