pic32mx440 timer interrupt issue

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.

pic32mx440 timer interrupt issue

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.

pic32mx440 timer interrupt issue

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