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 USB Interface Microchip PIC18F4550 with CDC library This example demonstration how to use USB PIC18F4550 with CDC library .I modified this from CDC example for PICDEM FS USB. I use Delphi to control PIC18F4558 via USB.To use Delphi example you must download TComPort component for delphi(in this site) In delphi I want to control LED3 , LED4 and Read ADC Port0(RA0) then show in volt format and progressbar. If you have PICDEM FS USB board you can use this example. But, if you don't have you can use my schematic I was designed for my test To program PIC18F4550 chip you must set configuration bit in PIC programmer software follow Pictire 2 |
 Picture 1 Schematic for my test  Picture 2 Configulation bit for this article |
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Note : I change some thing from orginal CDC library in file by add comment on line in autofiles\usbcfg.h //#define USE_SELF_POWER_SENSE_IO //#define USE_USB_BUS_SENSE_IO Example consist of : - CDC Examples I was modified from orginal compile with C18 - Delphi 6 example - Driver WinXP/2K(original) Source code Relate articles Control stepping motor via USB with PIC18F4550 USB data acquisition with PIC18F4550 |
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