diff options
Diffstat (limited to 'Documentation/usb/usb-serial.txt')
| -rw-r--r-- | Documentation/usb/usb-serial.txt | 486 |
1 files changed, 486 insertions, 0 deletions
diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt new file mode 100644 index 000000000..ab100d6ee --- /dev/null +++ b/Documentation/usb/usb-serial.txt @@ -0,0 +1,486 @@ +INTRODUCTION + + 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. + + +CONFIGURATION + + Currently the driver can handle up to 256 different serial interfaces at + one time. + + 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 + + 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. + + +SPECIFIC DEVICES SUPPORTED + + +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 + Connect Tech's Support Department at support@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. + + NOTE: + 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://sourceforge.net/projects/usbvisor/ + + 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/Entrega 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 thoroughly 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://www.carnationsoftware.com/carnation/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. + + Devices supported include: + -TripNav TN-200 USB GPS + -Navis Engineering Bureau CH-4711 USB GPS + + For any questions or problems with this driver, please contact Bill Ryder. + + +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 GPS (SiRF Star II lp arch) + -Cypress HID->COM RS232 adapter + + Note: Cypress Semiconductor claims no affiliation with 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 transferring 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 parallel 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 control 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 control 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 manufacturer'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 supports any device that has the PL2303 chip from Prolific + in it. This includes a number of single port USB to serial converters, + more than 70% of USB GPS devices (in 2010), and some USB UPSes. Devices + from Aten (the UC-232) and IO-Data work with this driver, as does + the DCU-11 mobile-phone cable. + + 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. + + See http://www.uuhaus.de/linux/palmconnect.html for up-to-date + information on this driver. + +Winchiphead CH341 Driver + + This driver is for the Winchiphead CH341 USB-RS232 Converter. This chip + also implements an IEEE 1284 parallel port, I2C and SPI, but that is not + supported by the driver. The protocol was analyzed from the behaviour + of the Windows driver, no datasheet is available at present. + The manufacturer's website: http://www.winchiphead.com/. + For any questions or problems with this driver, please contact + frank@kingswood-consulting.co.uk. + +Moschip MCS7720, MCS7715 driver + + These chips are present in devices sold by various manufacturers, such as Syba + and Cables Unlimited. There may be others. The 7720 provides two serial + ports, and the 7715 provides one serial and one standard PC parallel port. + Support for the 7715's parallel port is enabled by a separate option, which + will not appear unless parallel port support is first enabled at the top-level + of the Device Drivers config menu. Currently only compatibility mode is + supported on the parallel port (no ECP/EPP). + + TODO: + - Implement ECP/EPP modes for the parallel port. + - Baud rates higher than 115200 are currently broken. + - Devices with a single serial port based on the Moschip MCS7703 may work + with this driver with a simple addition to the usb_device_id table. I + don't have one of these devices, so I can't say for sure. + +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, provide + echo <vid> <pid> >/sys/bus/usb-serial/drivers/generic/new_id + where the <vid> and <pid> is replaced with the hex representation of your + device's vendor id and product id. + If the driver is compiled as a module you can also provide one id when + loading the module + insmod usbserial vendor=0x#### product=0x#### + + 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 + + +CONTACT: + + 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 +greg@kroah.com |