pic32mx440 timer interrupt issue
Posted by
Toni on March 27, 2012
Hi All,
I'm working with a simple self made board with a pic32mx440f512h.
I started with a simple project defining 2 tasks (working with gpios).
Calling the vTaskStartScheduler, the second defined task runs just once, then the system hangs.
I've observed that, on the timer interrupt, the code jumps to vector 0 instead of vector 4.
Currently I've modified the xPortStartScheduler function (port.c) adding the following line at the very beginnig:
INTCONSET = _INTCON_MVEC_MASK; // Set MVEC
to enable the multivector mode.
Is that "fix" OK?
Regards.
RE: pic32mx440 timer interrupt issue
Posted by
Richard on March 28, 2012
I'm not sure, without digging the manual out, but the official demo does it by making a call to the Microchip library as follows:
INTEnableSystemMultiVectoredInt();
Regards.
RE: pic32mx440 timer interrupt issue
Posted by
Toni on March 28, 2012
You're right, official demo uses the INTEnableSystemMultiVectoredInt().
And it also works for me.
Anyway I don't understand (I'm just a beginner) why this interrupt controller configuration is left to the user whereas the OS functions define all the other stuffs (like timer vector).
Many thanks.
Regards