The interrupt: Cpu_ivINT_Hard_Fault

[randenewberry]

I am using the FRDM-K20D50M with the CMSIS-DSP library and getting the Cpu_ivINT_Hard_Fault  interrupt in the middle of the FFT routine arm_rfft_q31.

I'm not sure if this routine has anything to do with this interrupt.

Is there a way to disable this interrupt?

If not where do I start to trouble shoot this?

[Jorge_Gonzalez]

Hello Rande:

No, you cannot just disable the interrupt, so you necessarily have to find the root cause. The next thread by our colleague Derek Snell and his references to colleague Erich Styger's blog will give you a good starting point and good tips and tricks:

Tracking down Hard Faults

Regards!
Jorge Gonzalez