Hi,
I can make the code you need. However, I don't currently have that particular PIC, so I'd need to order it first (that's why I state 10 days, and not 2). I'm about to place an order to digikey for another project, so I can include this PIC there.
The code itself is not complex. Besides the PIC you'll need some sort of DAC, which can be something as simple as a resistor ladder. If you require, I can help you with that too.
Regards,
Guillermo