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TMS320F28075: No interrupt from ADC

Part Number: TMS320F28075

Dear support,

We use the ADC of TMS320F28075 to monitor some analog inputs.

I took the ADC initialization and flow from adc_soc_continuous_cpu01 example supplied by TI.

We monitor the analog input every 1 sec.

The first 24 (sometimes 28) measurements executed fine, but after that the ADCINTx bit stops to give an indication about measurement end, so I stuck on:

while(0 == AdcaRegs.ADCINTFLG.bit.ADCINT3);

I tried to protect this potentially endless loop with a timer, and found that every 24 (or 28) correct measurements, we get 1 case of no ADCINTx flag.

Please advise.

BR,

Alex.