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TMS320F28069: C2000 32-bit Microcontrollers Forum

W Lin
Prodigy 190 points
Part Number: TMS320F28069


Hi,

I have used the interrupt for SCI (SCITXINTA) which is y = 9, x = 2, and it works fine.

Now I want to change the priority of SCITXINTA. Then I changed the definition in library file "F2806x_SWPrioritizedIsrLevels.h" as follows:

As You can see, INT9PL is changed to 0, which means not used. But the SCI sends back response during communication. I am confused.

Best regards,

WL

  • 0
    TI__Guru 54215 points
    Hello,

    Setting INT9PL to 0 doesn't disable the interrupt. It just makes it the lowest priority according to the masks used in the ISRs, so it won't be nested. If you want to stop it altogether, you'll have to disable it in the PIEIER register.

    Whitney