Analog Interrupt on assistive device on Teensy 2

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PaulH

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I have read through most of the posts relating to the comparator function but I do not believe this is the direction I should go in.

I am using analog inputs EMG sensor boards as input for a virtual keyboard. The threshold can be adjusted to help with coordination.

Code:
if (sv0 > 250)
  {
    key = key | B00000001;

I need an interrupt to that can be triggered in the same way. I tried the following but it does not allow me to set a threshold:

Code:
attachInterrupt(5, swap, RISING);

Ideally something like this would be ideal but I have read that this is not possible:

Code:
if (sv3 > 250)
 pin5 = HIGH;

pin5 would be the interrrupt.
Guidance would be appreciated.

Thank you!

Paul
 
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