AM437X NMI Interrupt

Vishakh M11

Hi,

I am working on AM437X based platform.

In AM437X G25 pin is non-maskable interrupt. As per the discussion in https://e2e.ti.com/support/arm/sitara_arm/f/791/t/408677 this interrupt is maskbale like other interrupts.

But I am not able to find how to mask this interrupt.

Will someone please help me with this?

Thanks and Regards,

Vishakh

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Hi,

What software are you using? See section 3.3.1.3 in the AM437X TRM Rev. D.

0 Vishakh M11 over 8 years ago in reply to Biser Gatchev-XID

Prodigy 70 points

Hi Biser,

Thank you for the reply.
We are using VxWorks. I would like to know how we can mask this interrupt from the processor register.

With Regards,
Vishakh

0 Biser Gatchev-XID over 8 years ago in reply to Vishakh M11

TI__Guru**** 393215 points

External NMI is Interrupt No.39 For interrupt controller registers please follow the links to the ARM Infocenter, given in the TRM section posted above.

VxWorks is a third-party product and is not supported by TI.

0 Biser Gatchev-XID over 8 years ago in reply to Biser Gatchev-XID

TI__Guru**** 393215 points

From what I see from ARM documentation to disable NMI you should write "1" to bit 7 of register at offset 0x184:

0 Vishakh M11 over 8 years ago in reply to Biser Gatchev-XID

Prodigy 70 points

Hi Biser,

I am able to mask the NMI. Thank you for the suggestion.

Regards,
Visahkh

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AM437X NMI Interrupt