Use pure bluetooth in KOReader v2021.10.1

KOReader is an awesome application on Kobo device. The architecture of application is very flexible.

I follow the guides of NiLuJe to modify source code a little to let my Kobo Elipsa to use bluetooth.

The only file you modify is koreader/frontend/device/kobo/device.lua

01. Add "hasKeys = yes," in KoboEuropa object.

-- Kobo Elipsa

local KoboEuropa = Kobo:new{

    model = "Kobo_europa",

    isSunxi = yes,

    canToggleChargingLED = yes,

    hasFrontlight = yes,

    hasKeys = yes,

    hasGSensor = yes,

    canToggleGSensor = yes,

    pressure_event = C.ABS_MT_PRESSURE,

    misc_ntx_gsensor_protocol = true,

    display_dpi = 227,

    boot_rota = C.FB_ROTATE_CCW,

    battery_sysfs = "/sys/class/power_supply/battery",

    ntx_dev = "/dev/input/by-path/platform-ntx_event0-event",

    touch_dev = "/dev/input/by-path/platform-0-0010-event",

    isSMP = yes,

}

02. Modify key code for your pageturner, I use Logitech R500.

-- NOTE: For the Forma, with the buttons on the right, 193 is Top, 194 Bottom.

    self.input = require("device/input"):new{

        device = self,

        event_map = {

            [35] = "SleepCover",  -- KEY_H, Elipsa

            [59] = "SleepCover",

            [90] = "LightButton",

            [102] = "Home",

            [105] = "RPgBack",

            [106] = "RPgFwd",

            [116] = "Power",

            [331] = "Eraser",

            [332] = "Highlighter",

        },

        

03. Open your pageturner manually. My pageturner is event4.

-- NOTE: usb hotplug event is also available in /tmp/nickel-hardware-status (... but only when Nickel is running ;p)

    self.input.open("fake_events")

    self.input.open("/dev/input/event4")

    

Enjoy it.

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The issue of entering Kobo again is that we can't use bluetooth anymore. The below messages are from logread command. Maybe we can google these keywords to get the solution ?

Oct 23 20:49:02 nickel: (   144.927 @ 0x374c538) QObject::disconnect: Unexpected null parameter

Oct 23 20:49:02 nickel: (   144.927 @ 0x374c538 / ui.warning) cancelled before full sync has started

Oct 23 20:49:02 nickel: (   144.977 @ 0x374c538 / libraryLayout.warning) void AbstractLibraryController<C>::layout(bool) [with C = BluetoothDevice] view is null

Oct 23 20:49:02 nickel: (   144.999 @ 0x374c538 / libraryLayout.warning) void AbstractLibraryController<C>::layout(bool) [with C = BluetoothDevice] source has no rows

Oct 23 20:49:02 nickel: (   145.000 @ 0x374c538 / libraryLayout.warning) void AbstractLibraryController<C>::layout(bool) [with C = BluetoothDevice] source has no rows

Oct 23 20:49:53 bluetoothd[3342]: Endpoint unregistered: sender=:1.2 path=/org/bluez/hci0/A2DP/SBC/Source/1

Oct 23 20:49:53 bluetoothd[3342]: Endpoint unregistered: sender=:1.2 path=/org/bluez/hci0/A2DP/SBC/Source/2

Oct 23 20:49:57 bluetoothd[3342]: Terminating

Oct 23 20:49:57 nickel: (   200.505 @ 0x374c538 / bt.warning) void BluetoothManager::objectManagerInterfacesRemoved(const QDBusObjectPath&, const QStringList&) adapter already destroyed

Oct 23 20:49:57 bluetoothd[3342]: Stopping SDP server

Oct 23 20:49:57 bluetoothd[3342]: Exit

Oct 23 20:50:13 bluetoothd[3352]: Bluetooth daemon 5.63

Oct 23 20:50:13 bluetoothd[3352]: src/main.c:check_options() Unknown key InitVolume for group General in /etc/bluetooth/main.conf

Oct 23 20:50:13 bluetoothd[3352]: Starting SDP server

Oct 23 20:50:13 bluetoothd[3352]: Bluetooth management interface 1.14 initialized

Oct 23 20:50:13 bluetoothd[3352]: src/adapter.c:reset_adv_monitors_complete() Failed to reset Adv Monitors: Unknown Command (0x01)

Oct 23 20:50:23 bluetoothd[3352]: Failed to set mode: Failed (0x03)

Oct 23 20:50:23 bluetoothd[3352]: Player registered: sender=:1.4 path=/com/kobo/bluetooth/MediaPlayer

Oct 23 20:50:24 bluealsa: Couldn't get HCI version: Network is down

Oct 23 20:50:24 bluetoothd[3352]: Endpoint registered: sender=:1.8 path=/org/bluez/hci0/A2DP/SBC/Source/1

Oct 23 20:50:24 bluetoothd[3352]: Endpoint registered: sender=:1.8 path=/org/bluez/hci0/A2DP/SBC/Source/2

Oct 23 20:50:31 bluetoothd[3352]: Endpoint unregistered: sender=:1.8 path=/org/bluez/hci0/A2DP/SBC/Source/1

Oct 23 20:50:31 bluetoothd[3352]: Endpoint unregistered: sender=:1.8 path=/org/bluez/hci0/A2DP/SBC/Source/2