I want to use the ADC in free run. I init a clock as fast as possible for having the fastest speed. For testing the speed I enable the interrupt and I toggle one I/O every tick,. The result on the scope is not what I expect. The rate is very irregular. I don t get the point.
I am using the FRDM for K64. The BUS clock is 60 MHz. The division is 4 so the ADCLK is 15MHz. It should be ok for the 8 bit resolution.
Is there a suggestion for the irregularity of the interrupt??