Serial inputting a character or equivalent Hex value on a pin

Hello,

I have the free version of uVision 4 and I am experimenting with a "bit banging" code. I have selected the input and output pins. And now I am looking for a way to serialy inject a character into the pin?

I have been looking for this in the application notes, but I don't see anything that would suite this kind of input.

Is there a way that I can have a file or something that will direct a character to the input pin?

Sincerely,
Jim

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