Hi Harold,
The generated code for the component is located inside the folder named Generated_Code, the files are named the same as the component:

About the code being updated, just make sure to click on the "Generate Processor Expert Code" button each time you make any modification to the component properties, methods or events:

Regarding your question on how to set GPIO lines to send a modulated pulse, you could use the PWM component:

You just need to configure the period, starting pulse width and set on which pin you want the output.
I would also recommend you to take a look to the following post created by Erich Styger that gives an overview of Processor Expert:
Overview: Processor Expert | MCU on Eclipse
Hope it helps!
Best Regards,
Carlos Mendoza
Technical Support Engineer
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