i use a ppi channel 0 to connect timer2 and adc,when timer2 compare event happen,the adc task start begin.then,in the adc interrupt handler,i read the adc result into the buffer,then send the data in the buffer to a phone. then,i toggled a gpio pin in the adc interruupt handler,and inspect it through a Oscilloscope.but,the peroid of it is irregular,sometimes become longer,why?
