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I designed this board to be a general-purpose experimentation board to help me learn about the PIC184550 USB module (or SIE). This was meant to be a kind of "step up" from my dsPIC30f4011 board which uses an RS-232 serial interface for communication with a PC. I really wanted to move from using RS-232 to USB, as USB is the new standard these days and because there are USB ports on all new computers. This board was really just supposed to be a prototype, but it ended up working so well, I decided to use it as the microcontroller on my CNC machine. It's also a very easy PCB to make because of the thick traces and ample spacing.
Here's a picture of the board on my CNC machine:
Here's a picture of the board on my CNC machine:
Can you please help me out for a small problem in my usb project!
I am trying for simple usb communication b/w pic18f4550 and PC. I have used your code of ''Using microchip usb cdc framework" for testing.
I have made necessary usb circuit. but the problem is that when i plug the usb into the PC. It detects my usb hardware and a driver message for "USB- RS232 Emulation Demo" comes and ask for driver and after 3-4 seconds this message disappears and device also disappears from the device manager.
and when I unplug and plug again. the same behaviour is also repeats.
I am using 24pf load capacitor with 20 mhz crystal. Can you figure out the problem? am i using the correct load capacitors?
I will be very very thankful to you if you assist me. =)
waiting for your reply.
-Awais