Dell Active Pen PN350M not working properly
Solution 1:
I managed to create a python driver using the evdev and libevdev libraries. I'm creating a virtual device and then simply passing the events I found from the stylus. It's working with pressure events and tracking however I couldn't get the buttons to work.
Just copy this and mark it as executable and you shall see a device called "Custom Stylus" that should work. Futher to make it seamless I added it to the gnome-session-properties
so that it runs the script on startup.
Hope this helps!
#!/usr/bin/env python3
import sys
import libevdev
import time
import evdev
from evdev import UInput, AbsInfo, ecodes
import os
def main(args):
p = 0
i = 0
devices = evdev.list_devices()
for dev in devices:
# print('%-12i%s' % (p, evdev.InputDevice(dev).name))
if evdev.InputDevice(dev).name == 'CUST0000:00 27C6:0118 Stylus':
i = p
p += 1
# i=int(input("Enter number: "))
device = evdev.InputDevice(devices[i])
print(device)
# print(mouse.capabilities(verbose=True))
device.grab()
x, y = 0, 0
dev = libevdev.Device()
dev.name = "Custom Stylus"
dev.enable(libevdev.INPUT_PROP_DIRECT)
dev.enable(libevdev.EV_KEY.BTN_TOOL_PEN)
dev.enable(libevdev.EV_KEY.BTN_TOOL_RUBBER)
# Click
dev.enable(libevdev.EV_KEY.BTN_TOUCH)
# Press button 1 on pen
dev.enable(libevdev.EV_KEY.BTN_STYLUS)
# Press button 2 on pen, see great doc
dev.enable(libevdev.EV_KEY.BTN_STYLUS2)
# Send absolute X coordinate
dev.enable(libevdev.EV_ABS.ABS_X,
libevdev.InputAbsInfo(minimum=0, maximum=5760, resolution=17))
# Send absolute Y coordinate
dev.enable(libevdev.EV_ABS.ABS_Y,
libevdev.InputAbsInfo(minimum=0, maximum=3240, resolution=17))
# Send absolute pressure
dev.enable(libevdev.EV_ABS.ABS_PRESSURE,
libevdev.InputAbsInfo(minimum=0, maximum=1023))
dev.enable(libevdev.EV_SYN.SYN_REPORT)
dev.enable(libevdev.EV_SYN.SYN_DROPPED)
try:
uinput = dev.create_uinput_device()
print("New device at {} ({})".format(uinput.devnode, uinput.syspath))
# Sleep for a bit so udev, libinput, Xorg, Wayland, ...
# all have had a chance to see the device and initialize
# it. Otherwise the event will be sent by the kernel but
# nothing is ready to listen to the device yet. And it
# will never be detected in the futur ;-)
time.sleep(1)
# Reports that the PEN is close to the surface
# Important to make sure xinput can detect (and list)
# the pen. Otherwise, it won't write anything in gimp.
uinput.send_events([
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOUCH,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOOL_PEN,
value=1),
libevdev.InputEvent(libevdev.EV_SYN.SYN_REPORT,
value=0),
])
# Says that the pen it out of range of the tablet. Useful
# to make sure you can move your mouse, and to avoid
# strange things during the first draw.
uinput.send_events([
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOUCH,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOOL_PEN,
value=0),
libevdev.InputEvent(libevdev.EV_SYN.SYN_REPORT,
value=0),
])
for event in device.read_loop():
code, val = event.code, event.value
if code == ecodes.ABS_MT_POSITION_X:
uinput.send_events([
libevdev.InputEvent(libevdev.EV_ABS.ABS_X,
value=int(val)),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOUCH,
value=1),
libevdev.InputEvent(libevdev.EV_KEY.BTN_STYLUS,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_STYLUS2,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOOL_PEN,
value=1),
libevdev.InputEvent(libevdev.EV_SYN.SYN_REPORT,
value=0)])
# vpen.write(ecodes.EV_ABS, ecodes.ABS_X, int(val))
if code == ecodes.ABS_MT_POSITION_Y:
uinput.send_events([
libevdev.InputEvent(libevdev.EV_ABS.ABS_Y,
value=int(val)),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOUCH,
value=1),
libevdev.InputEvent(libevdev.EV_KEY.BTN_STYLUS,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_STYLUS2,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOOL_PEN,
value=1),
libevdev.InputEvent(libevdev.EV_SYN.SYN_REPORT,
value=0)])
if code == ecodes.ABS_MT_PRESSURE:
uinput.send_events([
libevdev.InputEvent(libevdev.EV_ABS.ABS_PRESSURE,
value=int(val)),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOUCH,
value=1),
libevdev.InputEvent(libevdev.EV_KEY.BTN_STYLUS,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_STYLUS2,
value=0),
libevdev.InputEvent(libevdev.EV_KEY.BTN_TOOL_PEN,
value=1),
libevdev.InputEvent(libevdev.EV_SYN.SYN_REPORT,
value=0)])
device.ungrab()
except KeyboardInterrupt:
pass
if __name__ == "__main__":
main(sys.argv)