c6678 NMI handler

Serguei Smirnov

Other Parts Discussed in Thread: CODECOMPOSER

Hi,

I can’t figure out how to handle a NMI interrupt. Interrupt handling in general is described here: http://processors.wiki.ti.com/index.php/Configuring_Interrupts_on_Keystone_Devices

The wiki refers to data manual (http://www.ti.com/lit/ds/symlink/tms320c6678.pdf ) for particular interrupt numbers , but all I could see in the document for NMI is basically how to trigger/clear it externally. So if I’m to take the approach recommended in the wiki, I suppose I’m missing the interrupt number to use. I also tried poking around in the config file edit utility of the TI CodeComposer, but couldn’t find how to configure an interrupt of “NMI” type.

Is there an example code for how to handle NMI on c6678? (In our application we want to use it to let the DSP know that it needs to WB cache as a part of core dumping procedure).

I'm using pdk 1.1.2.5

Thanks!

over 11 years ago

0 lding over 11 years ago

TI__Guru* 95265 points

You can try to add the following code to your application's .cfg file to accomplish this:

var Exception = xdc.useModule('ti.sysbios.family.c64p.Exception');

Exception.nmiHook = '&myNmiHookFxn';

where myNmiHookFxn is your NMI ISR function.

Regards, Eric

0 Serguei Smirnov over 11 years ago in reply to lding

Prodigy 20 points

The solution you suggested works perfectly. Thanks for taking your time to respond!

0 Joseph Gagnon over 10 years ago in reply to lding

Prodigy 200 points

I have the same question but I am only using the CSL calls, not SYS/BIOS or CodeComposer. Any suggestions?

Joseph Gagnon

Edit: I was able to find a crude solution for NMIs but have not found a similar mechanism for installing my own Exception Handler.

CSL_intcHookIsr(CSL_INTC_VECTID_NMI, platform_c6678_private_handle_reset_irq);

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c6678 NMI handler