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`devc-serusb`

Driver for USB-to-serial adaptors

You must be root to start this driver.

Syntax:

devc-serusb [options]

Runs on:

Neutrino

Targets:

ARMLE, MIPSLE, PPCBE, SHLE, x86

Options:

-b number

The initial baud rate (default 57600).

-C size

The size of the canonical buffer in bytes (default 256).

-d args[,args ...]

Device-specific options. See below.

-E

Set options to “raw” (default).

-e

Start in edited mode (default raw). Software flow control is enabled by default.

-F

Disable hardware flow control (default to hardware flow control enabled). Hardware flow control is not supported in edited mode.

-f

Enable hardware flow control (default). Hardware flow control is not supported in edited mode.

-I number

The size of the raw input buffer in bytes (default 2048).

-O number

(“Oh”) The size of the interrupt output buffer in bytes (default 2048).

-S|s

Disable / enable software flow control. The default depends on the mode: in raw mode (-E, the default), it's disabled; in edited mode (-e), it's enabled.

The order in which you specify the -E or -e, and -S or -s options matters:

Options	Mode	Software flow control
`-e`	Edited	Enabled
`-S` `-e`	Edited	Enabled
`-e` `-S`	Edited	Disabled
`-E`	Raw	Disabled
`-s` `-E`	Raw	Disabled
`-E` `-s`	Raw	Enabled

The device-specific options that you can specify with the -d option are:

busno=bus: The bus number of the USB controller.
devno=dev: The USB address of the device.
did=did: The device ID of the device.
ign_remove: Specify to prevent the removal callback from being attached.
module=name: Set the hardware module to use for an unknown vendor ID or device ID.
path=name: Connect to the specified USB stack. Default is /dev/io-usb/io-usb.
pindex=idx: Set the port that the index options are to be applied to.
priority=prio: Set the priority of the event-processing thread. Default is 21.
query_modules: Display the currently supported hardware modules.
rx_urbs=num: The number of URBs for BulkIn. Default is 4.
tx_urbs=num: The number of URBs for BulkOut. Default is 4.
unit=num: The unit number: 1 = /dev/serusb1, 2 = /dev/serusb2, etc. Default is the first available number, starting from 1.
vid=vid: The vendor ID of the device.
wait=num: Wait num seconds for the USB stack. Default is 60 seconds.

Description:

The devc-serusb is a driver for USB-to-serial adaptors.

If you provide the vid, did, busno and devno arguments for device-specific options, devc-serusb does not attach an insertion callback to detect newly inserted devices. The driver will work only with the already-inserted device that corresponds to the arguments specified on the command line. If you do not also specify the ign_remove option, the driver is terminated when the device is removed.

The unit option has meaning only when the driver is started for a specific device by using the vid, did, busno and devno arguments. If the driver is managing device insertions, the default behavior always applies.

Because devc-serusb is a USB class driver, the USB stack (io-usb) must be running before you start this driver.