Swordfish

After having injected a frequency PWM of 9 Khz (Duty = 50 % and PIC 18F4620 For this example) to an engine. I do not know how to use ACD.read to read a difference of current the load sweats
when the engine is blocked Ex: Raise pane system anti pinching.

SO, How to gonfigure for this example the ADC.read function or Read.median ....?

Thanks in advance...
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My first interest is working with a PWM signal.