topic Re: ETPU PWM - Interrupts in Other NXP Products

ETPU PWM - Interrupts

kylesch — Wed, 04 Mar 2009 05:38:02 GMT

Hey all,

So I am trying to integrate the ETPU PWM (from set1) into a basic structure to set a new duty cycle with an EMIOS mod counter. However, whenever I run the initialization function fs_etpu_init (which is included in the MPC55XX cookbook) an interrupt is generated continuously, nothing else can function. Specifically, it is the interrupt that corresponds to the Loss of Lock. However, I have disabled this option in the PLL config and when I monitor the PLL register it doesn't lose lock.

I am using the MPC5553 with CodeWarrior 5.9. Any help would be appreciated.

Thanks

Re: ETPU PWM - Interrupts

dayve — Sat, 07 Mar 2009 02:53:56 GMT

Hey,

Does your hardware run other applications without this issue? Can you use the PLL to gen system clock with out any issues without this code?

Regards,

dayve

Re: ETPU PWM - Interrupts

kylesch — Sat, 07 Mar 2009 03:14:51 GMT

Yes, I had a fully functional program that has just about every component, Clock / EMIOS / EQADC / ESCI / etc. All I did was initalize the ETPU and the ETPU PWM and set a duty cycle based on a change in ADC value and the error occured.

Re: ETPU PWM - Interrupts

dayve — Wed, 11 Mar 2009 23:13:22 GMT

Can you please create a Service Request and we should be able to get an eTPU expert to help you.

Thanks .