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Secondary ISR getting called only once

Tanmayee Deshpande
Prodigy 180 points


Hello,

I am working on Solar MPPT DC DC inverter project, Have converted the existing control suite project from F28035 to F28027.

After conversion, 

The code works fine for Incremental Build 1 and 2. For incremental build 3, The SECONDARY ISR containing MPPT algorithm comes into picture.

The trigger for this ISR in original code is EPWM7 of F28035. As F28027 contains only 4 PWMs, have replaced the trigger with EPWM4.

 

PWM4 in original code is configured for instrumentation with 1Mhz switching Frequency. After commenting out this configuration in the code for F28027, The SECONDARY ISR is called but only once. I have tried a lot but, not able to call this ISR periodically. Also, the interrupt flag is not getting cleared.

Can any one help me out?

I am attaching screen shots for the same.