Bluetooth page turning for Kobo eReaders

[shamalox]

Ok, here it is

[Renate]

Sorry, I got confused when I tried to unzip on top of a attrib +r file.

This thing thinks it's a digitizer. That's wacky.

05 0c    Usage page (Consumer)
09 01    Usage (Consumer control)
a1 01    Collection (Application)

85 03    Report id (3)

15 00    Logical minimum (0)
25 01    Logical maximum (1)
75 01    Report size (1)
95 0b    Report count (11)
09 ea    Usage (Volume decrement)
09 e9    Usage (Volume increment)
09 30    Usage (Power)
0a ae 01 Usage (AL Keyboard layout)
0a 23 02 Usage (AC Home)
81 02    Input (Variable, Absolute)

95 01    Report count (1)
75 0d    Report size (13)
81 03    Input (Constant, Variable)

c0       End collection

05 0d    Usage page (Digitizer)
09 01    Usage (Digitizer)
a1 01    Collection (Application)

85 02    Report id (2)

09 20    Usage (Stylus)
a1 02    Collection (Logical)

09 42    Usage (Tip switch)
15 00    Logical minimum (0)
25 01    Logical maximum (1)
75 01    Report size (1)
95 01    Report count (1)
81 02    Input (Variable, Absolute)

09 32    Usage (In range)
81 02    Input (Variable, Absolute)

95 06    Report count (6)
81 03    Input (Constant, Variable)

75 08    Report size (8)
09 51    Usage (Contact identifier)
95 01    Report count (1)
81 02    Input (Variable, Absolute)

05 01    Usage page (Desktop)
26 ff 0f Logical maximum (4095)
75 10    Report size (16)
55 0e    Unit exponent (-2)
65 33    Unit (in³)
09 30    Usage (X)
35 00    Physical minimum (0)
46 b5 04 Physical maximum (1205)
81 02    Input (Variable, Absolute)

46 8a 03 Physical maximum (906)
09 31    Usage (Y)
81 02    Input (Variable, Absolute)

c0       End collection

05 0d    Usage page (Digitizer)
09 54    Usage (Contact count)
95 01    Report count (1)
75 08    Report size (8)
81 02    Input (Variable, Absolute)

85 08    Report id (8)

09 55    Usage (Contact count maximum)
25 05    Logical maximum (5)
b1 02    Feature (Variable, Absolute)

c0       End collection

Edit: Cleaned up parsing of units.

[KissMeKiwi]

Is there any reason one kobo would recognize a device in evtest, but another wouldn't? both are Clara 2Es. Tried factory resetting but that is not working. I tried the device (a bluetooth camera remote control) on my own kobo and it works just fine. Logs aren't really telling anything. Should I try a new kobo?

[Renate]

Well, there is so much wackiness going on with this descriptor I wouldn't be surprised if something kicked it out.

On the consumer controls, there are 13 bits (+3 bits padding) defined for 5 controls.

The X and Y coordinates are 12 bit but they each translate to 12.05 cubic inches.

And then there is the question of where they are even poking.
If you don't set Physical Minimum/Maximum then an X of 4095 means the right edge independent of screen size.
With it set as it is it means 12.05 cubic inches which you might interpret (wrongly) as 12.05 (linear) inches.
Depending on interpretation this might mean off the screen or clipped to the right edge.
But we don't know where it's poking anyway.

Finally, the Logical Collection on the Digitizer report seems odd.

Also, this is set up for multi-touch.

[NoGoNearKobo]

New here, hoping someone can lend a hand.

Bought the Libra especially for the BLE page turning capability.

BLE ring bought (cheap 'tik tok' one). BTPT installed. Config built and placed onto Kobo. No working..Patched it with the uuhid module...still no working.

--- evtest log -----

Input device name: "S18"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 116 (KEY_POWER)
    Event code 172 (KEY_HOMEPAGE)
    Event code 320 (BTN_TOOL_PEN)
    Event code 330 (BTN_TOUCH)
    Event code 374 (KEY_KEYBOARD)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value      0
      Min        0
      Max     4095
    Event code 1 (ABS_Y)
      Value      0
      Min        0
      Max     4095
    Event code 40 (ABS_MISC)
      Value      0
      Min        0
      Max        1
  Event type 4 (EV_MSC)
    Event code 4 (MSC_SCAN)
Properties:
  Property type 0 (INPUT_PROP_POINTER)

------------ UP BUTTON PRESSED ------------

Event: time 1711828815.033800, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828815.033800, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1711828815.033800, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 1
Event: time 1711828815.033800, type 3 (EV_ABS), code 40 (ABS_MISC), value 1
Event: time 1711828815.033800, type 3 (EV_ABS), code 0 (ABS_X), value 1904
Event: time 1711828815.033800, type 3 (EV_ABS), code 1 (ABS_Y), value 3200
Event: time 1711828815.033800, -------------- SYN_REPORT ------------
Event: time 1711828815.033844, type 3 (EV_ABS), code 1 (ABS_Y), value 2600
Event: time 1711828815.033844, -------------- SYN_REPORT ------------
Event: time 1711828815.033866, type 3 (EV_ABS), code 1 (ABS_Y), value 2300
Event: time 1711828815.033866, -------------- SYN_REPORT ------------
Event: time 1711828815.033886, type 3 (EV_ABS), code 1 (ABS_Y), value 2000
Event: time 1711828815.033886, -------------- SYN_REPORT ------------
Event: time 1711828815.033907, type 3 (EV_ABS), code 1 (ABS_Y), value 1700
Event: time 1711828815.033907, -------------- SYN_REPORT ------------
Event: time 1711828815.069881, type 3 (EV_ABS), code 1 (ABS_Y), value 1400
Event: time 1711828815.069881, -------------- SYN_REPORT ------------
Event: time 1711828815.097783, type 3 (EV_ABS), code 1 (ABS_Y), value 1100
Event: time 1711828815.097783, -------------- SYN_REPORT ------------
Event: time 1711828815.129836, type 3 (EV_ABS), code 1 (ABS_Y), value 800
Event: time 1711828815.129836, -------------- SYN_REPORT ------------
Event: time 1711828815.161892, type 3 (EV_ABS), code 1 (ABS_Y), value 500
Event: time 1711828815.161892, -------------- SYN_REPORT ------------
Event: time 1711828815.189831, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828815.189831, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1711828815.189831, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 0
Event: time 1711828815.189831, -------------- SYN_REPORT ------------
Event: time 1711828815.189839, type 3 (EV_ABS), code 1 (ABS_Y), value 200
Event: time 1711828815.189839, -------------- SYN_REPORT ------------

-------------- BOTTOM BUTTON PRESSED ------------------

Event: time 1711828839.065778, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828839.065778, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1711828839.065778, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 1
Event: time 1711828839.065778, type 3 (EV_ABS), code 1 (ABS_Y), value 1012
Event: time 1711828839.065778, -------------- SYN_REPORT ------------
Event: time 1711828839.065837, type 3 (EV_ABS), code 1 (ABS_Y), value 1100
Event: time 1711828839.065837, -------------- SYN_REPORT ------------
Event: time 1711828839.065869, type 3 (EV_ABS), code 1 (ABS_Y), value 1400
Event: time 1711828839.065869, -------------- SYN_REPORT ------------
Event: time 1711828839.065901, type 3 (EV_ABS), code 1 (ABS_Y), value 1700
Event: time 1711828839.065901, -------------- SYN_REPORT ------------
Event: time 1711828839.065933, type 3 (EV_ABS), code 1 (ABS_Y), value 2000
Event: time 1711828839.065933, -------------- SYN_REPORT ------------
Event: time 1711828839.101798, type 3 (EV_ABS), code 1 (ABS_Y), value 2300
Event: time 1711828839.101798, -------------- SYN_REPORT ------------
Event: time 1711828839.129760, type 3 (EV_ABS), code 1 (ABS_Y), value 2600
Event: time 1711828839.129760, -------------- SYN_REPORT ------------
Event: time 1711828839.161728, type 3 (EV_ABS), code 1 (ABS_Y), value 2900
Event: time 1711828839.161728, -------------- SYN_REPORT ------------
Event: time 1711828839.189745, type 3 (EV_ABS), code 1 (ABS_Y), value 3200
Event: time 1711828839.189745, -------------- SYN_REPORT ------------
Event: time 1711828839.225873, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828839.225873, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1711828839.225873, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 0
Event: time 1711828839.225873, -------------- SYN_REPORT ------------
Event: time 1711828839.225882, type 3 (EV_ABS), code 1 (ABS_Y), value 3500
Event: time 1711828839.225882, -------------- SYN_REPORT ------------

---------- left button pressed ----------------

Event: time 1711828871.653896, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828871.653896, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1711828871.653896, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 1
Event: time 1711828871.653896, type 3 (EV_ABS), code 0 (ABS_X), value 2500
Event: time 1711828871.653896, type 3 (EV_ABS), code 1 (ABS_Y), value 1136
Event: time 1711828871.653896, -------------- SYN_REPORT ------------
Event: time 1711828871.653951, type 3 (EV_ABS), code 0 (ABS_X), value 2200
Event: time 1711828871.653951, -------------- SYN_REPORT ------------
Event: time 1711828871.653983, type 3 (EV_ABS), code 0 (ABS_X), value 1900
Event: time 1711828871.653983, -------------- SYN_REPORT ------------
Event: time 1711828871.654014, type 3 (EV_ABS), code 0 (ABS_X), value 1600
Event: time 1711828871.654014, -------------- SYN_REPORT ------------
Event: time 1711828871.677795, type 3 (EV_ABS), code 0 (ABS_X), value 1300
Event: time 1711828871.677795, -------------- SYN_REPORT ------------
Event: time 1711828871.705887, type 3 (EV_ABS), code 0 (ABS_X), value 1000
Event: time 1711828871.705887, -------------- SYN_REPORT ------------
Event: time 1711828871.737808, type 3 (EV_ABS), code 0 (ABS_X), value 700
Event: time 1711828871.737808, -------------- SYN_REPORT ------------
Event: time 1711828871.765754, type 3 (EV_ABS), code 0 (ABS_X), value 400
Event: time 1711828871.765754, -------------- SYN_REPORT ------------
Event: time 1711828871.797877, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828871.797877, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1711828871.797877, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 0
Event: time 1711828871.797877, -------------- SYN_REPORT ------------
Event: time 1711828871.797886, type 3 (EV_ABS), code 0 (ABS_X), value 100
Event: time 1711828871.797886, -------------- SYN_REPORT ------------

-------------- right button pressed -----------------

Event: time 1711828900.089871, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828900.089871, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1711828900.089871, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 1
Event: time 1711828900.089871, type 3 (EV_ABS), code 0 (ABS_X), value 512
Event: time 1711828900.089871, -------------- SYN_REPORT ------------
Event: time 1711828900.089913, type 3 (EV_ABS), code 0 (ABS_X), value 650
Event: time 1711828900.089913, -------------- SYN_REPORT ------------
Event: time 1711828900.089937, type 3 (EV_ABS), code 0 (ABS_X), value 948
Event: time 1711828900.089937, -------------- SYN_REPORT ------------
Event: time 1711828900.089958, type 3 (EV_ABS), code 0 (ABS_X), value 1250
Event: time 1711828900.089958, -------------- SYN_REPORT ------------
Event: time 1711828900.109805, type 3 (EV_ABS), code 0 (ABS_X), value 1550
Event: time 1711828900.109805, -------------- SYN_REPORT ------------
Event: time 1711828900.141858, type 3 (EV_ABS), code 0 (ABS_X), value 1850
Event: time 1711828900.141858, -------------- SYN_REPORT ------------
Event: time 1711828900.169895, type 3 (EV_ABS), code 0 (ABS_X), value 2150
Event: time 1711828900.169895, -------------- SYN_REPORT ------------
Event: time 1711828900.201838, type 3 (EV_ABS), code 0 (ABS_X), value 2450
Event: time 1711828900.201838, -------------- SYN_REPORT ------------
Event: time 1711828900.229714, type 3 (EV_ABS), code 0 (ABS_X), value 2750
Event: time 1711828900.229714, -------------- SYN_REPORT ------------
Event: time 1711828900.265716, type 3 (EV_ABS), code 0 (ABS_X), value 3050
Event: time 1711828900.265716, -------------- SYN_REPORT ------------
Event: time 1711828900.289684, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 1711828900.289684, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1711828900.289684, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 0
Event: time 1711828900.289684, -------------- SYN_REPORT ------------
Event: time 1711828900.289692, type 3 (EV_ABS), code 0 (ABS_X), value 3350
Event: time 1711828900.289692, -------------- SYN_REPORT ------------

The config file named S18 in .btpt

nextPage EV_ABS ABS_Y 1012
prevPage EV_ABS ABS_Y 3200

[Renate]

The basic problem is that it's trying to be a mouse, not a "D pad" or cursor keys.

[NoGoNearKobo]

It does function as a mouse on all connected devices, but I thought that was quite common and not an issue.

Are you suggesting it needs reprogramming to be a D Pad style ring outputting 0/1 instead of outputting X/Y integer values? The japanese blog post referenced in this thread using absX and absY with success.

[Renate]

The very cheapest devices ($1 selfie clickers) are completely mask programmed and nothing can be changed.

Better devices (BT keyboards) have the bulk of code in mask program and an I2C EEPROM for configuration.
It's quite easy to change the display name for the device to anything (with the same or less characters) as those strings are conspicuous.
The HID report descriptor is easy to find too.
If the Usage for the button is not an array it's easy to change button assignments.
If it is an array you'll have to find the values elsewhere and they could be in instructions instead of raw.
If you want to change other thing (like sleep timeout) it can get complicated.
If you end up doing all this work, buy a case of these devices.
When you try to re-order everything will be different.
Of course you'll need an I2C master running at ~3V.

[phasmine]

Originally Posted by a2x

I got it working with a 8Bitdo SN30 Pro, so it was my other device not working properly.

Thanks tsowell!

(I could not edit my previous message since it is older than 5min)

Hi, I have the same controller. What did you put in the config file in regards to assigning which buttons to turn the page back and forth?

[snoman]

It works very well on my Libra Colour. I use 8BitDo zero 2.
Thank you @tsowell
Now I'm looking for the way to turn on Bluetooth from NickelMenu.

[Renate]

Game controllers weird me out because they're not symmetrical.
The 8BitDo zero 2 is cute as heck and comes in yellow!
OTOH, for a page turner you really want something with less buttons that you can orient in your hand and find the right button without looking.

[lumping-sugar66]

Originally Posted by snoman

It works very well on my Libra Colour. I use 8BitDo zero 2.
Thank you @tsowell
Now I'm looking for the way to turn on Bluetooth from NickelMenu.

The bluetooth commands are added to the master branch of nickelmenu. I think they'll be released by 0.5.5 or higher. If you're comfortable, though. you can build it on your computer and install, which will give you the following:

nickel_bluetooth - one of:
enable (4.34.20097+)
disable (4.34.20097+)
toggle (4.34.20097+)
check (4.34.20097+)
scan (4.34.20097+)

Use of nickel_bluetooth requires you to have wifi turned on, doesn't have to be connected but wifi needs to be enabled.

Also, with 8BitDo's the bluetooth connection to the device for some reason isn't automatic. Unfortunately you still need to go into settings and engage the connection manually. I've tried many devices, and the only device I found that engages the minute you turn on bluetooth is the selfie clicker that looks like this for me:


https://imgur.com/a/X5VkFgm

[lumping-sugar66]

I'm thinking of making a fork of the repository to help @twowell, and I think we can add a few functions to this addon (which I use heavily).

8bitdo's are great but there are only 4 functions that I was able to get working. next and previous chapter, and next and previous pages. The use case I was looking into is to adjust the distance between the reader and myself so I would need to implement things like:

Increase, Decrease font size
Increase Decrease line height
Bookmark, Unbookmark, Go to next/prev Bookmark
Turn the screen 90, 180, 270 degrees
generic NickelMenu commands/Shell scripts
Dark Mode/Light mode
Background light (no sure how stable this is)

[snoman]

Also, with 8BitDo's the bluetooth connection to the device for some reason isn't automatic. Unfortunately you still need to go into settings and engage the connection manually.

Sad news...

[Renate]

Originally Posted by lumping-sugar66

Also, with 8BitDo's the bluetooth connection to the device for some reason isn't automatic. Unfortunately you still need to go into settings and engage the connection manually. I've tried many devices, and the only device I found that engages the minute you turn on bluetooth is the selfie clicker...

That's strange.
I have foot pedals, keyboards and clickers and I never touch a power switch.
I just hit some key and within two seconds it connects.
Ok, I'm on Android, I have my own popup that shows BT appearing and disappearing.
Does the Kobo give you any indication that something connected?