Introduction to libusb including API.

1. Introduction to libusb
Sway Wang
2013.05.20

2. • Enable user space application programs to
communicate with USB devices
• Cross platform (Linus, Mac OS)
• Version : libusb-1.0 and libusb-0.1
• License: LGPL
Introduction libusb

3. Bindings

4. • Port of the USB library to Windows
• Version : libusb-0.1
• kernel driver : libusb0.sys
• user space : libusb0.dll
libusb-win32

5. Initialize libusb
usb_init: Initialize libusb
usb_find_busses: Finds all USB busses on system
usb_find_devices: Find all devices on all USB devices
usb_get_busses: Return the list of USB busses found

6. Open Device
usb_dev_handle *usb_open(struct *usb_device dev);
int usb_close(usb_dev_handle *dev);

7. Bulk Transfers

8. Asynchronous Bulk Transfers

9. Control Transfers

10. Q & A
• Thanks for your listening!!