i have project need used bluetooth usb, now i dnt know what the easy way to interface it with PIC, i have problem to program the usb....

 

Not sure I completely understand your question. Some of the newer pics support USB OTG which makes things pretty easy to hook up to a USB host or device. As far as bluetooth you will need a secondary IC to control this. I don't think PIC has any onboard support for BT.

 

so i need use max232 to convert usb signal?
i look at pic18f455 header file seam usb not there

btw thank maxpower097