linux4media e-5i (usb display module)

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• this page deals with connecting a linux4media e-5i usb display module to an usb port and drive it using serdisplib
• i'm not responsible for the content of external web pages
• external web pages will generally open in separate browser windows or tabs
• english is not my native language. please keep that in mind (corrections of english grammar and formulations are very welcome!)
• email: mrwastl at users.sourceforge.net

linux4media e-5i usb display module:

description

e-5i usb display modules are developed by www.digitaldevices.de.

the package that was sent to me contained the following items: a very impressive remote control with keyboard and virtual mouse display module (128x64) USB module 'E-5i' with IR-sensor the USB module registers with three USB interfaces when connected to a UNIX system: interface 0: mouse interface 1: display interface 2: keyboard both mouse and keyboard worked just fine out of the box without the need of additional configuration (tested on linux-systems). interface 1 (display) is assigned as HID (human interface device) and can be driven using ioctl-calls without the need of additional kernel modules.

some images

test image generated by testserdisp	output generated by multidisplay
output generated by graphlcd	lcd4linux output running on an NSLU2 (architecture: arm)

ATTENTION! - important notes

problems with mouse and keyboard support

problems with libusb:

connecting an E-5i USB display module:

intro

ioctl HID (provided by the linux kernel)

• the display-part of the USB module is assigned to the HID support of the operating system and can be controlled using ioctl-calls
• the device name that is assigned to the display interface is /dev/hiddevX or /dev/usb/hiddevX.
• using udev or hotplug, permissions can be assigned to the device to give access to non-root users

nota bene

on some distributions, /dev/usb/hiddev0 is used instead of /dev/hiddev0
'HID:' can be omitted if the devicename starts with /dev/hiddev or /dev/usb/hiddev.

examples

configuration in lcd4linux

 Display SerDispLib {
   Driver 'serdisplib'
   Port 'HID:/dev/hiddev0'
   Model 'L4ME5I'
 } 

configuration in graphlcd

 [serdisp]
 Driver=serdisp
 Device=HID:/dev/hiddev0
 Controller=l4me5i

calling test program testserdisp

 testserdisp -n l4me5i -p '/dev/hiddev0'

passing options through serdisp_init():

intro

    examples:
    
      serdisp_init(sdcd, "L4ME5I", "INVERT=YES");
      serdisp_init(sdcd, "L4ME5I", "ROTATE=90");
    

options

ranges, aliases

links:

thanks:

history: