Microchip PIC18 assembly USB stack

• Bradley A. Minch lab1 USB stack in assembly for the 18f2550, adapted to gpasm - uses a 4MHz xtal
  18f2550 schematic from Nuts & Volts Jun 2006 article
  18f4550 schematic from DM163025 PICDEM FSUSB board
• Bradley A. Minch lab1 USB stack in assembly for the 18f14k50, gpasm - needs a 12MHz xtal
  reference schematic from DV164126 LPC USB development kit
• the patch file with the differences between the 18f2550 and the 18f14k50
  

links

• original Bradley A. Minch USB sources, assembly and C
• Microchip forum on Bradley A. Minch USB stack
• modified USB sources for gpasm, by Ben Dugan
• picpack library with BoostC USB stack
• sdcc USB stack by Alexander Enzmann, Nuts&Volts, Jun 2006
  updated sources for sdcc 2.8
• Microchip mchpfsusb v2.7 C18 USB stack
  

tutorials

• USB made simple
• USB in a nutshell

tools

• usbmon kernel module
  

  mount -t debugfs none /sys/kernel/debug/
  cat /sys/kernel/debug/usb/usbmon/3u # snoop usb port 3

• usbmon command
  

  usbmon -i 3 -s 1024 # -i 3 snoops usb port 3 only

• vusb-analyzer GUI
  

  sudo usbmon -i 3 -s 1024 -fu >/tmp/3u.mon & vusb-analyzer -t /tmp/3u.mon
  # -i 3 snoops port 3 only

• wireshark, with GUI
  usbmon3 interface is usb port 3
  

books

• USB Complete - The Developers Guide, Jan Axelson
• USB Design by Example, John Hyde