Eco Button

Eco Button
Participants	Dennis
Skills	Linux
Status	Dormant
Niche	Software
Purpose	Instrument
Tool	No
Location	In a box in zaal2
Cost	free
Tool category

Eco Button

Usb-eco-button.jpg {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost::free | }}

Eco button as mpd skip button

We have this cute usb Eco Button lying around, which is meant to put your computer in sleep mode in order to save energy. It would be nice if we could use it as an mpd next button.

Button gets recognized as shown in dmesg:

[ 1856.485618] hid-generic 0003:0C50:1010.0003: hiddev0,hidraw0: 
USB HID v1.10 Device [One small click One big change One small click One big change] 
on usb-0000:00:1d.1-2/input0

After reading [1] I was hoping this would be easy, but it seems this particular button does not generate keypresses in X.

So over to [2], and more info on [3]. Got an error similar to [4]. After editing hid.c it compiles.

And it does stuff too \o/. This command:

sudo ./hid_mapper --learn --manufacturer 'One small click One big change' \
--product 'One small click One big change' --map

Outputs:

Found HID device
Opened HID interface on /dev/hidraw0
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8 
02 80 24 08 36 20 08 88 
02 19 01 8f 92 11 00 a8

So it seems that after the button is pressed, a sequence of two events is repeated X times (seems to depend on how long button is pressed). I'm having trouble feeding it the correct map file. With a map file like this:

0219018f921100a80280240836200888:KEY_UP

or this:

0219018f921100a8:KEY_DOWN
0280240836200888:KEY_UP

This command:

sudo ./hid_mapper --manufacturer 'One small click One big change' \
--product 'One small click One big change' --map 'eco.map'

spits out this error:

Loading eco.map

Error loading map file eco.map
[ MapReader ] Unknown key name at line 1

So where to go from here? Maybe ask author of hid_mapper? Or try and write something using https://github.com/signal11/hidapi