NeoTheFox/huion-keys
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Automatically find /dev/hidrawX device

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This commit is contained in:
Eric Jiang 2020-10-29 15:00:58 -07:00
parent 3ce4b767ae
commit f5a6941b01
1 changed files with 19 additions and 3 deletions
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22
huion_keys.py
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@ -1,3 +1,5 @@
import os
from _xdo_cffi import ffi, lib
BUTTON_BINDINGS = [
@ -32,7 +34,10 @@ BUTTON_BINDINGS = [
def main():
xdo = lib.xdo_new(ffi.NULL)
hidraw_path = get_tablet_hidraw()
hidraw_path = get_tablet_hidraw('256c', '006e')
if hidraw_path is None:
print("Could not find tablet hidraw device")
print("Found tablet at " + hidraw_path)
hidraw = open(hidraw_path, 'rb')
while True:
btn = get_button_press(hidraw)
@ -42,8 +47,19 @@ def main():
xdo, lib.CURRENTWINDOW, BUTTON_BINDINGS[btn], 10)
def get_tablet_hidraw():
return '/dev/hidraw3'
def get_tablet_hidraw(vendor_id, product_id):
"""Finds the /dev/hidrawX file that belongs to the given vendor and product ID."""
# TODO: is this too fragile?
hidraws = os.listdir('/sys/class/hidraw')
for h in hidraws:
device_path = os.readlink(os.path.join('/sys/class/hidraw', h, 'device'))
if ("%s:%s" % (vendor_id.upper(), product_id.upper())) in device_path:
# need to confirm that there's "input" because there are two hidraw
# files listed for the tablet, but only one of them carries the
# mouse/keyboard input
if os.path.exists(os.path.join('/sys/class/hidraw', h, 'device/input')):
return os.path.join('/dev', os.path.basename(h))
return None
BUTTON_BITS = {