Free usb software for linux

pvrusb is a Linux driver for the WinTV PVR USB (not the plain WinTV USB), a USB MPEG2 encoder with a TV tuner. The WinTV PVR USB is a video capture device attached to the USB bus. The purpose is similar to the PCI version (WinTV PVR), but this driver is for the USB version only. Follow this link for a Linux driver for the PCI version.

This device has also not much to do with the plain WinTV USB, because the WinTV PVR USB contains a MPEG2 encoder, which the simple WinTV USB does not contain. The higher compression ratio of the WinTV PVR USB gives much better video quality at higher resolutions than the WinTV USB. Support for the Pinnacle Bungee is still incomplete.

Some notes about the program:

You need the WinTV PVR firmware ROM from Hauppauge ("HCWUSB.UPD.ROM" or "USB_MPEG2_POPNOISEFIX.ROM"). I obtained the files by installing the WinTV software on a Windows machine. The files do not contain any copyright notice, but for now I just assume Hauppauge would not want me to distribute them and so I wont.
You can upload the firmware into the driver after inserting the module using:
dd if=USB_MPEG2_POPNOISEFIX.ROM of=/proc/pvrusb/firmware bs=256k
To display information about the currently loaded firmware:
cat /proc/pvrusb/firmware
The driver attaches itself to /dev/usb/lp0 (yes, the USB printer special file). YES, this is stupid. I will change it soon.
To save the MPEG2 stream try:
cat /dev/usb/lp0 > data.mpg
To watch TV attach a signal to the composite input and use MPlayer:
mplayer /dev/usb/lp0
The tuner is not programmed yet. I will probably add tuner support soon.
I have a WinTV with NTSC tuner. I cannot add PAL tuner support until I get access to a PAL WinTV.

LCD2USB is a open source/open hardware project. LCD2USB was meant to be cheap and to be made of easily available parts.
It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like. The total cost (without display and pcb) are about 5 to 10 Euros. LCD2USB currently comes with a simple demo application that works under Linux, MacOS X and Windows. I still have several spare PCBs, please email me if you are interested.
LCD2USB makes use of several projects to achieve this goal. LCD2USB is based on:
LCD4LINUX, a great framework to use small LCDs with linux, AVR-USB, a pure software implementation of USB for the AVR plattform, USBtiny, another software usb implementation for the AVR, and Peter Fleurys LCD routines for the AVR.
The hardware of the LCD2USB interface consists of the Atmel AVR Mega8 CPU, a cheap and easy to obtain microcontroller with 8 KBytes flash (of which ~3k are used in this application) and 2 KBytes RAM. The processor is surrounded by few parts, mainly connectors to interface to the PC and the LCD.
A power LED (LED1) indicates that the system is powered via USB. The system clock is derived from a 12Mhz crystal. This frequency is necessary due to the fact that the software USB implementation requires a precise timing with respect to the USB.
Enhancements:
- Added usbtiny based version due to user request
- AVR-USB version 1.07, USBtiny version 2.07

libusb is a library to provide userspace access to USB devices. libusb project supports Linux 2.6/2.4/2.2, FreeBSD/OpenBSD/NetBSD, and Darwin/MacOS X.
Operating System support
- Linux
- FreeBSD
- NetBSD
- OpenBSD
- Darwin
- MacOS X
Building:
It should be as simple as running these two commands:
./configure
make

vp-usb-lock is a Linux kernel driver and PAM module that utilizes the PC wireless USB lock and makes it possible to use it as authentication method for your Linux box.
It is easy to install, but needs access to the sources of the kernel and PAM to build correctly. It has been tested under Fedora Core 2 with a custom made 2.6.7-1.494.2.2 kernel, but it should also work with other kernel versions and distributions.
Enhancements:
- A lock daemon was added.
- A compilation error that was introduced lately by some changes to the Linux kernel was fixed.
- Support for kernel 2.4.x versions was added.

PIC USB Framework is a USB application framework dedicated to Linux (on the host side) and to the PIC 18F4550 family of microcontrollers (on the device side).
PUF includes: a bootloader that can flash the PIC application through the USB, a PIC demo and its corresponding application on the host side, and docker, the host-side flash programming utility.
The PUF also contains gputils and sdcc as cross-building tools, and odyssey 0.4vasco as a parallel port PIC programmer.
Enhancements:
- sdcc optimization flags are now switched on by default.
- A component library (including a console mechanism and a small real time scheduler) has been added to help building user applications.
- Tools have been upgraded to automake 1.9.6, autoconf 2.59d, sdcc snapshot 4482, odyssey 0.5, and gputils 0.13.4.
- The applications size has been optimized.

MMUSBAUDIO (formerly known as USBUA100) is a Linux kernel module device driver for the Roland / Edirol desktop audio devices.
It works with next devices:
UA-1EX
UM-1
UA-5
UA-100
SC-8850
The Advanced Linux Sound Architecture (ALSA) supports many USB audio devices. It is provided with most major distributions of Linux and is recommended in most cases. However, OSS compatibility is needed for some older (and simpler) applications and ALSA does not provide Open Sound System (OSS) backwards compatibility for 24-bit USB devices like the UA-5 that use 6 bytes per URB. Also, the ALSA programming interface is extremely complicated compared to the relatively rudamentary (and considerably less robust) OSS interface. Therefore, MMUSBAUDIO is provided as an alternative.
All of the supported devices use protocols similar to the USB-Audio and USB-MIDI standards. Therefore, MMUSBAUDIO should be relatively easy to upgrade for other devices.
Enhancements:
- Upgrade to support UA-1EX.
- Change mmusbaudio_find_audio_endpoints() to assign devices based on endpoint rather than simply using endpoints as signatures for device type. Needed since UA-1EX and UA-5 use different endpoint addresses.

USB Headset Buttonss purpose is to enable the Volume up and Down Buttons on my Logitech USB 30 Headset.

USB Headsets are very useful for VoIP applications like SIP Networks or Skype. On my headset I have volume buttons which need extra care to be taken of. This Application does it.