Hooking CPU Exceptions to Functions

Soumyajit Das

Genius 3340 points

Other Parts Discussed in Thread: SYSBIOS

MCU: TM4C1294NCPDT

TI-RTOS: v2.01.00.03

CCS: v6.0.1.0040

Hi,

Following an earlier post, I have implemented hooked function call on CPU Hard Fault condition (Refer this link:

). How can we similarly assign hooked function for other processor related exceptions like NMI, MEMORY FAULT, BUS FAULT, USAGE FAULT, etc.

Thanks

Regards

Soumyajit

over 9 years ago

0 Ashish Kapania over 9 years ago

TI__Mastermind 21645 points

Hi Soumyajit,

You can install your own customer vector function for NMI, Memory, Bus, Usage and Hard faults as follows:

var Hwi = xdc.useModule('ti.sysbios.family.arm.m3.Hwi');
Hwi.busFaultFunc = "&myBusFaultHandler";
Hwi.hardFaultFunc = "&myHardFaultHandler";
Hwi.memFaultFunc = "&myMemFaultHandler";
Hwi.nmiFunc = "&myNmiHandler";
Hwi.usageFaultFunc = "&usageFaultHandler";

By default, we plug the exception handler function as the NMI, Bus, Usage, Memory and Hard fault handler.

For more details please refer to Hwi cdoc for Cortex-M devices:
downloads.ti.com/.../Hwi.html

Best,
Ashish

0 Soumyajit Das over 9 years ago in reply to Ashish Kapania

Genius 3340 points

Hi Ashish,
This is exactly what I was looking for.
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Thanks
-
Regards
Soumyajit

Processors

Processors forum

Hooking CPU Exceptions to Functions