PC Is Not Seeing My PIC 18F2550 [USB Connection]


Joined May 11, 2009
Maybe I don't understand what you are trying to do but.....

You still need to be able to program the PIC somehow
It could be that the OP has a chip that someone has pre-programmed. But unless this is not true. The op will have a real "The Chicken or the egg causality dilemma" to solve

Thread Starter


Joined Feb 19, 2011
@thatoneguy: Thanks, it appears thats what I'm looking for. I'll see if I can get some of those examples running on my PIC and I'll let you guys know if I run across a question.

I'm basically trying to make a USB device that can be manipulated by 3rd party software on a desktop, I'm not trying to write a PIC program in C++, I'm just sending messages or receiving messages from a program written in C++ on a Windows Platform.

Windows is failing to see my device still, so I obviously didn't write the correct code for the PIC to act as a USB device that Windows can detect. :(

What I'm trying to accomplish is for starters is using the USB connection to turn a LED ON/OFF using software written for Windows.