INTCPS Register Updates failing

Nived Sivadas

Hi,

I am trying to update the interrupt controller registers but the update seems to be failing.

(gdb) n
131             AITC.INTCPS_SYSCONFIG |= 3;
(gdb) p/x AITC.INTCPS_SYSCONFIG
$2 = 0x0
(gdb) n
134             while(AITC.INTCPS_SYSSTATUS == 1);
(gdb) p/x AITC.INTCPS_SYSCONFIG
$3 = 0x0
(gdb)

As you can see the value remains the same before and after the update. I am running in supervisor mode and the INTCPS_PROTECTION register seems to be set to default so there is no reason to suspect these registers are protected.

Any pointers ??

Thanks

over 13 years ago

0 Vaibhav Bedia over 13 years ago

TI__Expert 5290 points

Where are you running these commands from? Also take a look at the Starterware code to ensure you are not missing anything.

Regards,

Vaibhav

0 Nived Sivadas over 13 years ago in reply to Vaibhav Bedia

Prodigy 30 points

Thanks Vaibhav.

I was running them through OpenOCD. It seems like there was a problem with the debuggers ability to read the registers. The registers were infact getting updated but for some reason when i read them from gdb they appeared to be 0.

Also, what is this starterware code you are referring to.

Nived

0 Vaibhav Bedia over 13 years ago in reply to Nived Sivadas

TI__Expert 5290 points

It's non-OS based code for AM335x http://www.ti.com/tool/starterware-sitara

I am interested in knowing how you managed to get OpenOCD working :) Care to share the details?

Regards,
Vaibhav

Processors

Processors forum

INTCPS Register Updates failing