USB PIC18f2550 problem

[bercam]

Hi all,

I'm trying to run the USB CDC code downloaded from CCS web page.
I've got my own board using PIC18f2550.
The board is running with 4Mhz Xtall:

#fuses HSPLL,NOWDT,NOPROTECT,NOLVP,DEBUG,USBDIV,PLL1, CPUDIV1,VREGEN
#use delay(clock=48000000)

I'm using USART serial port to debug code
#use rs232(STREAM=CH1,baud=19200,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8)

I've put a 470nF on C3 and 47KOhm resistor between VCC_USB and D+ in order to select Hi-Speed USB peripheral

My board gets power from USB port and after plug it into USB conector I can see messages in the hyperterminal session (The board is running). At same time Windows recognize a new peripheral and show me a window in order to select .inf driver file .

After that I select the follow path C:\MCHPFSUSB\fw\CDC\inf\win2k_winxp

At the end Windows could not install the hardware: wizard could not find a suitable software

any suggestion

[kevcon]

Double check the data sheet for the resistor value on D+, all of the specs I've seen use a 1.5K resistor.

[bertronicom]

finally it works the problem was:

I've selecting .inf from Microchip instead .inf CCS

[Guest]

anyway you dont need to use any external resistor since pull-up resistors are inside a PIC.