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Altera_Forum's avatar
Altera_Forum
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14 years ago

Micro C stops and does not resume

Hello, I have a problem using Micro C in Nios EDS. I do not have a wide experience working with Nios EDS and I am sorry if my problem is basic but I have not been able to find the solution. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

A few ideas. I any of these can help you.

1.

You selected small C library in sys lib properties.

I'm not sure, but if I remember correctly the reduced library uses an implementation of printf which is not thread safe. So this could explain your problem.

Use the complete C library. If you can't, because of SRAM size, remove the printf in tasks and replace them with PIO/LED signaling.

2.

Please check the usleep function. In some cases this is implemented as a rough blocking for() cycle. This would prevent a higher priority task to release control and your app would get stuck.

3.

Is the timer period correctly set to 1ms or whatever?

Regards

Cris