请告知Example_2803xClaAdc例程中实现什么样的功能？

例程前的注释中有说明例程实现的功能：

In this example ePWM1 is setup to generate a periodic ADC SOC.
Channel ADCINA2 is converted. When the ADC begins conversion,
it will assert ADCINT2 which will start CLA task 2.

Cla Task2 logs 20 ADCRESULT1 values in a circular buffer.
When Task2 completes an interrupt to the CPU clears the ADCINT2 flag.

这个我当然有看到啦，就是没办法理解这个例程到底想表达什么意思，是用CLA模块对ADC进行采样么