ISR for ADC and EPWM in F28335

ALIREZA TAJFAR1

Prodigy 15 points

Other Parts Discussed in Thread: TMS320F28335

Hi folks,

I an trying to activate two ISRs in my code, one for ePwm and the other for ADC.

However, I can only have "IER |= 1" to activate the interrupt for ADC or "IER |=4" to do the same for ePwm.

Is there any way to temporarily change the IER value inside the ISRs? I tried it but it failed!

By the way, I noticed that the priority of the ADC interrupt is higher that that of the ADC.

Thanks

Ali

over 13 years ago

0 Mahesh Krishnakumar over 13 years ago

TI__Prodigy 380 points

Ali,

Can you take a look at

6.3.1 Procedure for Handling Multiplexed Interrupts

in the http://www.ti.com/lit/ug/sprugl8b/sprugl8b.pdf

This should clearly explain the scenario you have requested.

Regards,

mahesh

0 BrandonAzbell over 13 years ago

TI__Guru 64470 points

I'm not sure I quite understand what you really want to have happen.

In my view, you should be able to utilize a couple of examples found in the controlSUITE software content management download for the TMS320F28335 and integrate them together to provide a framework for an application that has both ADC and PWM interrupts.

Look at the adc_soc and epwm_timer_interrupts examples as a starting point.

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ISR for ADC and EPWM in F28335