Tool/software:
i need to trigger ADC conversion at setting regular interval, these conversions may not be synchronous with ePWMs, sample frequency is much higher than ePWM, maybe 8 times
so i think i can use CPU timer to trigger ADC conversion, and i do not want that the CPU enter an interrupt service , i just need the timer to generate a regular time interval.
in the TRM the trigger setting description is not so clear, whether the CPU timer interrupt trigger the ADC conversion or the count down to zero event trigger the conversion. and DMA may be used to move the sample result to avoid interrupt CPU.