Tiny NEO Scope is a very simple low bandwidth (less than 100Khz) oscilloscope developed to test the performance of the ADC (analogue to digital converter) and coded to run on the M4 (no Arduino code). We first demonstrate the capture of the 50Khz PWM (50% duty cycle) which is generated from the A9 side, see how scope manages to display the signal and correctly calculate the frequency. Secondly we feed the scope a PWM signal varying from 3Khz to 95Khz to demonstrate its ability to track and best calculate the input frequency of the input signal. More description on my blog.
