RGB LED MAX7219 PIC18F4550


PIC18F4550 MCHPFSUSB Development Board

"USB Device not recognized!!!"
After weeks of tweaking with the PIC18F4550 and the MCHPFSUSB USB Framework from Microchip, finally got today it to work. This is the 'minimal' schematic I used The hex file used is the one from Microchip in the "C:\MCHPFSUSB\fw\_factory_hex\picdemfsusb.hex". The configuration bits are :


AddressValueCategorySetting
30000024
3000010E
3000023F
3000031E
30000581
30000601
3000080F
300009C0
30000A0F
30000BA0
30000C0F
30000D40
The program was programmed using Superpro S3000 Series from Xelteck.

the USB Cable

RED 	: Vcc
BLACK	: GND
GREEN	: D-	
WHITE	: D+
This is how my usb connection goes. There was a problem initially getting the color code correct.

Places we went wrong

  • the 470nF Capacitor
  • The USB Connections
And finally after giving a good press, voilla ....
"USB Device Found"

Comments

Submit

Name
Comment
4 / 2 =
 

Recent Comments