http://www.futureelectronics.com/en/Search.aspx?dsNav=Ntk:PartNumberSearch%7cPSoC+101%7c1%7c,Ny:True,Nea:True . How to generate and handle an interrupt from the PSoC hardware. In this project you will attach an input pin to an interrupt, then use an Interrupt Service Routine to toggle the state of an LED. I am going to make the input pin generate an interrupt. https://youtu.be/6ZnSUP0L4HE