devi-semtech

Semtech input manager for Photon

Syntax:

devi-semtech [general_opts] 
             protocol* [protocol_opts]*
             device* [device_opts]*
             filter* [filter_opts]*

Runs on:

Neutrino

Options:

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When you use a devi-* driver for a touchscreen device, you need a calibration file. The calibration file is generated from the output produced by the calib utility: calib > calib_file.txt For more information, see the calib utility in the Utilities Reference, and Touchscreens in the Neutrino User's Guide.

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General options:

-b

Prevent the use of the Ctrl-Alt-Shift-Backspace keychord to exit Photon (permitted by default).

-d device

Device (default: /dev/photon or $PHOTON).

-G

Don't require the presence of a graphics driver when starting up a touchscreen driver; useful in debug mode.

-g input_group

Input group (default: 1).

-l

List the internal modules. Modules are listed in the following format, where class is one of: D — Device, P — Protocol, or F — Filter:

module name | date compiled | revision | class
    

-P

Disable the Photon interface (it's started by default).

-r

Start the resource manager interface (only use if you aren't using Photon).

-v[v]...

Verbose output. More v characters cause more verbosity.

The protocol and protocol_opts are:

semtech [semtech_opts] [fd fd_opts]

The protocol modules and their options are:

• semtech — Semtech protocol

  -b baud

  Baud rate (default 119200)

  -R

  Don't reset the device (the default is to reset it).

The device modules and their options are:

• fd — open a device via open().

  -d device

  The device to open fd on (default /dev/ser1).

  -s

  The input interface is serial (being aware that the module is able to use some devctl() commands specific to serial ports).

The filter modules and their options are:

• abs — transform and compress absolute coordinate “touch” events.

  -b

  Touching the screen is a right mouse button (default left).

  -c

  Calibrate mode; don't transform coordinates.

  -f filename

  The calibration filename.

  -o x,y

  The origin of the display region (default: the origin of the graphics region).

  -s x,y

  The coordinates of the lower right corner of the display region (default: the width and height of the graphics region).

  -x

  Reverse X.

  -y

  Reverse Y.

Description:

The devi-semtech command starts the Semtech input manager for Photon.

Examples:

Connect the Semtech controller to the first serial port:

devi-semtech semtech fd -d/dev/ser1 abs -b

See also:

devi-*, inputtrap