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+ The USB serial driver currently supports a number of different USB to
+ serial converter products, as well as some devices that use a serial
+ interface from userspace to talk to the device.
+ See the individual product section below for specific information about
+ the different devices.
+ Currently the driver can handle up to 256 different serial interfaces at
+ one time.
+ If you are not using devfs:
+ The major number that the driver uses is 188 so to use the driver,
+ create the following nodes:
+ mknod /dev/ttyUSB0 c 188 0
+ mknod /dev/ttyUSB1 c 188 1
+ mknod /dev/ttyUSB2 c 188 2
+ mknod /dev/ttyUSB3 c 188 3
+ .
+ .
+ .
+ mknod /dev/ttyUSB254 c 188 254
+ mknod /dev/ttyUSB255 c 188 255
+ If you are using devfs:
+ The devices supported by this driver will show up as
+ /dev/usb/tts/{0,1,...}
+ When the device is connected and recognized by the driver, the driver
+ will print to the system log, which node(s) the device has been bound
+ to.
+ConnectTech WhiteHEAT 4 port converter
+ ConnectTech has been very forthcoming with information about their
+ device, including providing a unit to test with.
+ The driver is officially supported by Connect Tech Inc.
+ http://www.connecttech.com
+ For any questions or problems with this driver, please contact
+ Stuart MacDonald at stuartm@connecttech.com
+HandSpring Visor, Palm USB, and Clié USB driver
+ This driver works with all HandSpring USB, Palm USB, and Sony Clié USB
+ devices.
+ Only when the device tries to connect to the host, will the device show
+ up to the host as a valid USB device. When this happens, the device is
+ properly enumerated, assigned a port, and then communication _should_ be
+ possible. The driver cleans up properly when the device is removed, or
+ the connection is canceled on the device.
+ This means that in order to talk to the device, the sync button must be
+ pressed BEFORE trying to get any program to communicate to the device.
+ This goes against the current documentation for pilot-xfer and other
+ packages, but is the only way that it will work due to the hardware
+ in the device.
+ When the device is connected, try talking to it on the second port
+ (this is usually /dev/ttyUSB1 if you do not have any other usb-serial
+ devices in the system.) The system log should tell you which port is
+ the port to use for the HotSync transfer. The "Generic" port can be used
+ for other device communication, such as a PPP link.
+ For some Sony Clié devices, /dev/ttyUSB0 must be used to talk to the
+ device. This is true for all OS version 3.5 devices, and most devices
+ that have had a flash upgrade to a newer version of the OS. See the
+ kernel system log for information on which is the correct port to use.
+ If after pressing the sync button, nothing shows up in the system log,
+ try resetting the device, first a hot reset, and then a cold reset if
+ necessary. Some devices need this before they can talk to the USB port
+ properly.
+ Devices that are not compiled into the kernel can be specified with module
+ parameters. e.g. modprobe visor vendor=0x54c product=0x66
+ There is a webpage and mailing lists for this portion of the driver at:
+ http://usbvisor.sourceforge.net/
+ For any questions or problems with this driver, please contact Greg
+ Kroah-Hartman at greg@kroah.com
+PocketPC PDA Driver
+ This driver can be used to connect to Compaq iPAQ, HP Jornada, Casio EM500
+ and other PDAs running Windows CE 3.0 or PocketPC 2002 using a USB
+ cable/cradle.
+ Most devices supported by ActiveSync are supported out of the box.
+ For others, please use module parameters to specify the product and vendor
+ id. e.g. modprobe ipaq vendor=0x3f0 product=0x1125
+ The driver presents a serial interface (usually on /dev/ttyUSB0) over
+ which one may run ppp and establish a TCP/IP link to the PDA. Once this
+ is done, you can transfer files, backup, download email etc. The most
+ significant advantage of using USB is speed - I can get 73 to 113
+ kbytes/sec for download/upload to my iPAQ.
+ This driver is only one of a set of components required to utilize
+ the USB connection. Please visit http://synce.sourceforge.net which
+ contains the necessary packages and a simple step-by-step howto.
+ Once connected, you can use Win CE programs like ftpView, Pocket Outlook
+ from the PDA and xcerdisp, synce utilities from the Linux side.
+ To use Pocket IE, follow the instructions given at
+ http://www.tekguru.co.uk/EM500/usbtonet.htm to achieve the same thing
+ on Win98. Omit the proxy server part; Linux is quite capable of forwarding
+ packets unlike Win98. Another modification is required at least for the
+ iPAQ - disable autosync by going to the Start/Settings/Connections menu
+ and unchecking the "Automatically synchronize ..." box. Go to
+ Start/Programs/Connections, connect the cable and select "usbdial" (or
+ whatever you named your new USB connection). You should finally wind
+ up with a "Connected to usbdial" window with status shown as connected.
+ Now start up PIE and browse away.
+ If it doesn't work for some reason, load both the usbserial and ipaq module
+ with the module parameter "debug" set to 1 and examine the system log.
+ You can also try soft-resetting your PDA before attempting a connection.
+ Other functionality may be possible depending on your PDA. According to
+ Wes Cilldhaire <billybobjoehenrybob@hotmail.com>, with the Toshiba E570,
+ ...if you boot into the bootloader (hold down the power when hitting the
+ reset button, continuing to hold onto the power until the bootloader screen
+ is displayed), then put it in the cradle with the ipaq driver loaded, open
+ a terminal on /dev/ttyUSB0, it gives you a "USB Reflash" terminal, which can
+ be used to flash the ROM, as well as the microP code.. so much for needing
+ Toshiba's $350 serial cable for flashing!! :D
+ NOTE: This has NOT been tested. Use at your own risk.
+ For any questions or problems with the driver, please contact Ganesh
+ Varadarajan <ganesh@veritas.com>
+Keyspan PDA Serial Adapter
+ Single port DB-9 serial adapter, pushed as a PDA adapter for iMacs (mostly
+ sold in Macintosh catalogs, comes in a translucent white/green dongle).
+ Fairly simple device. Firmware is homebrew.
+ This driver also works for the Xircom/Entrgra single port serial adapter.
+ Current status:
+ Things that work:
+ basic input/output (tested with 'cu')
+ blocking write when serial line can't keep up
+ changing baud rates (up to 115200)
+ getting/setting modem control pins (TIOCM{GET,SET,BIS,BIC})
+ sending break (although duration looks suspect)
+ Things that don't:
+ device strings (as logged by kernel) have trailing binary garbage
+ device ID isn't right, might collide with other Keyspan products
+ changing baud rates ought to flush tx/rx to avoid mangled half characters
+ Big Things on the todo list:
+ parity, 7 vs 8 bits per char, 1 or 2 stop bits
+ HW flow control
+ not all of the standard USB descriptors are handled: Get_Status, Set_Feature
+ O_NONBLOCK, select()
+ For any questions or problems with this driver, please contact Brian
+ Warner at warner@lothar.com
+Keyspan USA-series Serial Adapters
+ Single, Dual and Quad port adapters - driver uses Keyspan supplied
+ firmware and is being developed with their support.
+ Current status:
+ The USA-18X, USA-28X, USA-19, USA-19W and USA-49W are supported and
+ have been pretty throughly tested at various baud rates with 8-N-1
+ character settings. Other character lengths and parity setups are
+ presently untested.
+ The USA-28 isn't yet supported though doing so should be pretty
+ straightforward. Contact the maintainer if you require this
+ functionality.
+ More information is available at:
+ http://misc.nu/hugh/keyspan.html
+ For any questions or problems with this driver, please contact Hugh
+ Blemings at hugh@misc.nu
+FTDI Single Port Serial Driver
+ This is a single port DB-25 serial adapter. More information about this
+ device and the Linux driver can be found at:
+ http://reality.sgi.com/bryder_wellington/ftdi_sio/
+ For any questions or problems with this driver, please contact Bill Ryder
+ at bryder@sgi.com
+ZyXEL omni.net lcd plus ISDN TA
+ This is an ISDN TA. Please report both successes and troubles to
+ azummo@towertech.it
+Cypress M8 CY4601 Family Serial Driver
+ This driver was in most part developed by Neil "koyama" Whelchel. It
+ has been improved since that previous form to support dynamic serial
+ line settings and improved line handling. The driver is for the most
+ part stable and has been tested on an smp machine. (dual p2)
+ Chipsets supported under CY4601 family:
+ CY7C63723, CY7C63742, CY7C63743, CY7C64013
+ Devices supported:
+ -DeLorme's USB Earthmate (SiRF Star II lp arch)
+ -Cypress HID->COM RS232 adapter
+ Note: Cypress Semiconductor claims no affiliation with the
+ the hid->com device.
+ Most devices using chipsets under the CY4601 family should
+ work with the driver. As long as they stay true to the CY4601
+ usbserial specification.
+ Technical notes:
+ The Earthmate starts out at 4800 8N1 by default... the driver will
+ upon start init to this setting. usbserial core provides the rest
+ of the termios settings, along with some custom termios so that the
+ output is in proper format and parsable.
+ The device can be put into sirf mode by issuing NMEA command:
+ $PSRF100,<protocol>,<baud>,<databits>,<stopbits>,<parity>*CHECKSUM
+ $PSRF100,0,9600,8,1,0*0C
+ It should then be sufficient to change the port termios to match this
+ to begin communicating.
+ As far as I can tell it supports pretty much every sirf command as
+ documented online available with firmware 2.31, with some unknown
+ message ids.
+ The hid->com adapter can run at a maximum baud of 115200bps. Please note
+ that the device has trouble or is incapable of raising line voltage properly.
+ It will be fine with null modem links, as long as you do not try to link two
+ together without hacking the adapter to set the line high.
+ The driver is smp safe. Performance with the driver is rather low when using
+ it for transfering files. This is being worked on, but I would be willing to
+ accept patches. An urb queue or packet buffer would likely fit the bill here.
+ If you have any questions, problems, patches, feature requests, etc. you can
+ contact me here via email:
+ dignome@gmail.com
+ (your problems/patches can alternately be submitted to usb-devel)
+Digi AccelePort Driver
+ This driver supports the Digi AccelePort USB 2 and 4 devices, 2 port
+ (plus a parallel port) and 4 port USB serial converters. The driver
+ does NOT yet support the Digi AccelePort USB 8.
+ This driver works under SMP with the usb-uhci driver. It does not
+ work under SMP with the uhci driver.
+ The driver is generally working, though we still have a few more ioctls
+ to implement and final testing and debugging to do. The paralled port
+ on the USB 2 is supported as a serial to parallel converter; in other
+ words, it appears as another USB serial port on Linux, even though
+ physically it is really a parallel port. The Digi Acceleport USB 8
+ is not yet supported.
+ Please contact Peter Berger (pberger@brimson.com) or Al Borchers
+ (alborchers@steinerpoint.com) for questions or problems with this
+ driver.
+Belkin USB Serial Adapter F5U103
+ Single port DB-9/PS-2 serial adapter from Belkin with firmware by eTEK Labs.
+ The Peracom single port serial adapter also works with this driver, as
+ well as the GoHubs adapter.
+ Current status:
+ The following have been tested and work:
+ Baud rate 300-230400
+ Data bits 5-8
+ Stop bits 1-2
+ Parity N,E,O,M,S
+ Handshake None, Software (XON/XOFF), Hardware (CTSRTS,CTSDTR)*
+ Break Set and clear
+ Line contrl Input/Output query and control **
+ * Hardware input flow control is only enabled for firmware
+ levels above 2.06. Read source code comments describing Belkin
+ firmware errata. Hardware output flow control is working for all
+ firmware versions.
+ ** Queries of inputs (CTS,DSR,CD,RI) show the last
+ reported state. Queries of outputs (DTR,RTS) show the last
+ requested state and may not reflect current state as set by
+ automatic hardware flow control.
+ TO DO List:
+ -- Add true modem contol line query capability. Currently tracks the
+ states reported by the interrupt and the states requested.
+ -- Add error reporting back to application for UART error conditions.
+ -- Add support for flush ioctls.
+ -- Add everything else that is missing :)
+ For any questions or problems with this driver, please contact William
+ Greathouse at wgreathouse@smva.com
+Empeg empeg-car Mark I/II Driver
+ This is an experimental driver to provide connectivity support for the
+ client synchronization tools for an Empeg empeg-car mp3 player.
+ Tips:
+ * Don't forget to create the device nodes for ttyUSB{0,1,2,...}
+ * modprobe empeg (modprobe is your friend)
+ * emptool --usb /dev/ttyUSB0 (or whatever you named your device node)
+ For any questions or problems with this driver, please contact Gary
+ Brubaker at xavyer@ix.netcom.com
+MCT USB Single Port Serial Adapter U232
+ This driver is for the MCT USB-RS232 Converter (25 pin, Model No.
+ U232-P25) from Magic Control Technology Corp. (there is also a 9 pin
+ Model No. U232-P9). More information about this device can be found at
+ the manufacture's web-site: http://www.mct.com.tw.
+ The driver is generally working, though it still needs some more testing.
+ It is derived from the Belkin USB Serial Adapter F5U103 driver and its
+ TODO list is valid for this driver as well.
+ This driver has also been found to work for other products, which have
+ the same Vendor ID but different Product IDs. Sitecom's U232-P25 serial
+ converter uses Product ID 0x230 and Vendor ID 0x711 and works with this
+ driver. Also, D-Link's DU-H3SP USB BAY also works with this driver.
+ For any questions or problems with this driver, please contact Wolfgang
+ Grandegger at wolfgang@ces.ch
+Inside Out Networks Edgeport Driver
+ This driver supports all devices made by Inside Out Networks, specifically
+ the following models:
+ Edgeport/4
+ Rapidport/4
+ Edgeport/4t
+ Edgeport/2
+ Edgeport/4i
+ Edgeport/2i
+ Edgeport/421
+ Edgeport/21
+ Edgeport/8
+ Edgeport/8 Dual
+ Edgeport/2D8
+ Edgeport/4D8
+ Edgeport/8i
+ Edgeport/2 DIN
+ Edgeport/4 DIN
+ Edgeport/16 Dual
+ For any questions or problems with this driver, please contact Greg
+ Kroah-Hartman at greg@kroah.com
+REINER SCT cyberJack pinpad/e-com USB chipcard reader
+ Interface to ISO 7816 compatible contactbased chipcards, e.g. GSM SIMs.
+ Current status:
+ This is the kernel part of the driver for this USB card reader.
+ There is also a user part for a CT-API driver available. A site
+ for downloading is TBA. For now, you can request it from the
+ maintainer (linux-usb@sii.li).
+ For any questions or problems with this driver, please contact
+ linux-usb@sii.li
+Prolific PL2303 Driver
+ This driver support any device that has the PL2303 chip from Prolific
+ in it. This includes a number of single port USB to serial
+ converters and USB GPS devices. Devices from Aten (the UC-232) and
+ IO-Data work with this driver.
+ For any questions or problems with this driver, please contact Greg
+ Kroah-Hartman at greg@kroah.com
+KL5KUSB105 chipset / PalmConnect USB single-port adapter
+Current status:
+ The driver was put together by looking at the usb bus transactions
+ done by Palm's driver under Windows, so a lot of functionality is
+ still missing. Notably, serial ioctls are sometimes faked or not yet
+ implemented. Support for finding out about DSR and CTS line status is
+ however implemented (though not nicely), so your favorite autopilot(1)
+ and pilot-manager -daemon calls will work. Baud rates up to 115200
+ are supported, but handshaking (software or hardware) is not, which is
+ why it is wise to cut down on the rate used is wise for large
+ transfers until this is settled.
+Options supported:
+ If this driver is compiled as a module you can pass the following
+ options to it:
+ debug - extra verbose debugging info
+ (default: 0; nonzero enables)
+ use_lowlatency - use low_latency flag to speed up tty layer
+ when reading from from the device.
+ (default: 0; nonzero enables)
+ See http://www.uuhaus.de/linux/palmconnect.html for up-to-date
+ information on this driver.
+Generic Serial driver
+ If your device is not one of the above listed devices, compatible with
+ the above models, you can try out the "generic" interface. This
+ interface does not provide any type of control messages sent to the
+ device, and does not support any kind of device flow control. All that
+ is required of your device is that it has at least one bulk in endpoint,
+ or one bulk out endpoint.
+ To enable the generic driver to recognize your device, build the driver
+ as a module and load it by the following invocation:
+ insmod usbserial vendor=0x#### product=0x####
+ where the #### is replaced with the hex representation of your device's
+ vendor id and product id.
+ This driver has been successfully used to connect to the NetChip USB
+ development board, providing a way to develop USB firmware without
+ having to write a custom driver.
+ For any questions or problems with this driver, please contact Greg
+ Kroah-Hartman at greg@kroah.com
+ If anyone has any problems using these drivers, with any of the above
+ specified products, please contact the specific driver's author listed
+ above, or join the Linux-USB mailing list (information on joining the
+ mailing list, as well as a link to its searchable archive is at
+ http://www.linux-usb.org/ )
+Greg Kroah-Hartman