MPC 5510 Interrupt Disable and Enable

[pederrogo]

Hello,

Turning off and on all interrupts is typically done by:

asm(" wrteei 0");

asm (" wrteei 1");

But, how to just disable a certain interrupt or group of interrupts?

Or is it possibly to just disable interrupts configured with a prio below a certai level?

Best Regards,

Peder Rogö

Peder Rogö

Senior SW Design Engineer

CPAC SYSTEMS AB

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peder.rogo@cpacsystems.se

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[pederrogo]

Hi Lukas,

Thanks for your support. We will look into to this in the quite near future and come to you if we would need any further support.

Regards,

Peder

[lukaszadrapa]

Hi,

an interrupt can be enabled/disabled on three levels:

- MSR[EE] bit

- priority level

- local interrupt enable bit in a peripheral (like PITINTEN register, for example)

If all three conditions are satisfied, an interrupt will be triggered. If an interrupt is disabled on one or on more levels, it won't be triggered.

MSR[EE] bit and local interrupt enable bits are clear, I think. Regarding the priority, please take a look at section "9.5.5 Priority Ceiling Protocol" in the reference manual. This allows you to disable group of interrupts based on their priority level.

Regards,

Lukas