#!/usr/bin/python3 import argparse import atexit import dbus import dbus.mainloop.glib import gi.repository.GLib import pprint import sys import time import usb.core #import traceback # Redragon K621 Horus vendor=0x258a product=0x0049 screensaver_list = [ 'org.gnome.ScreenSaver', 'org.cinnamon.ScreenSaver', 'org.kde.screensaver', 'org.freedesktop.ScreenSaver' ] def main(): parser = argparse.ArgumentParser( description='Adjust backlight for Redgradon Horus K621', add_help=True, ) parser.add_argument('--on', '-1', dest='switch', action='store_true', default=None, help='Turn keyboard backlight on') parser.add_argument('--off', '-0', dest='switch', action='store_false', default=None, help='Turn keyboard backlight off') parser.add_argument('--screensaver', '-s', dest='screensaver', action='store_true', default=None, help='Turn keyboard backlight off') args = parser.parse_args() if args.switch is None and args.screensaver is None: parser.print_help() sys.exit(1) if args.screensaver: dbus_loop = dbus.mainloop.glib.DBusGMainLoop(set_as_default=True) session = dbus.SessionBus(mainloop=dbus_loop) for screensaver in screensaver_list: session.add_match_string_non_blocking("interface='{}'".format(screensaver)) #session.add_match_string_non_blocking("interface='org.gnome.Mutter.IdleMonitor'") session.add_message_filter(message_callback) loop = gi.repository.GLib.MainLoop() loop.run() else: kbd = setup_usb() send_packets(kbd, args.switch) def message_callback(session, message): for screensaver in screensaver_list: if message.get_interface() == screensaver: pprint.pprint(message) # not supported in org.freedesktop.ScreenSaver: # Error org.freedesktop.DBus.Error.NotSupported: This method is not part of the idle inhibition specification: https://specifications.freedesktop.org/idle-inhibit-spec/latest/ if message.get_member() == "ActiveChanged" or message.get_member() == "WakeUpScreen": try: screensaver_changed = bool(message.get_args_list()[0]) print("Screen saver {} changed: ActiveChanged is {}".format(screensaver, screensaver_changed)) except: pass # Capture the GetActive method call in a try/except, or the screensavers that # don't support GetActive will block those that do try: screensaver_path = '/{0}'.format(screensaver.replace('.', '/')) screensaver_obj = session.get_object(screensaver, screensaver_path) screensaver_iface = dbus.Interface(screensaver_obj, screensaver) # Delay to allow for a more accurate reading of GetActive() time.sleep(0.25) status = bool(screensaver_iface.GetActive()) print("Screen saver {} changed. GetActive: {}".format(screensaver, status)) # Screensaver is now active; turning the screen back on is handled here with WakeUpScreen if status: kbd = setup_usb() send_packets(kbd, not status) except: continue # Always wake keyboard when screen is woken if message.get_member() == "WakeUpScreen": try: # Delay slightly to avoid conflicting with ActiveChanged's GetActive() above time.sleep(0.25) print("Screen saver {} changed: WakeUpScreen".format(screensaver)) kbd = setup_usb() send_packets(kbd, True) except: continue # Set up USB def setup_usb(): kbd = usb.core.find(idVendor=vendor, idProduct=product) if kbd is None: raise ValueError('Keyboard not found; perhaps switch to USB mode?') print("Product: ", kbd.product) print("Manufacturer: ", kbd.manufacturer) return kbd # Send packet/s def send_packets(kbd, switch): if kbd is None: setup_usb() if switch is True: #pattern = 0x01 # solid white #pattern = 0x02 # #pattern = 0x03 # #pattern = 0x04 # #pattern = 0x05 # #pattern = 0x06 # #pattern = 0x07 # #pattern = 0x08 # pattern = 0x09 # shadow_disappear #pattern = 0x10 # #pattern = 0x11 # #pattern = 0x12 # #pattern = 0x13 # #pattern = 0x14 # #pattern = 0x20 # custom pattern else: pattern = 0x00 # off print("Sending pattern {} command".format(pattern)) # This message tweaks the pattern between OFF (0x0) and the white shadow_disappear pattern (0x9) # with brightness 1/4 and speed 3/4 (I think) # # To modify the "on" pattern, capture the packets from the K621-RGB app with wireshark and usbpcap, # and find the last SET_REPORT request of a set of 4 with size 1068 bytes (1031 data bytes); # the first 20 bytes are identical in all four packets. # # You may need the preceeding three packets as well, and possibly the preceeding SET_REPORT request #(of size 42; I think this is a request for current settings) and GET_REPORT response (of size 290 bytes). # msg = [ 0x06, 0x03, 0xc6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5a, 0xa5, 0x03, 0x03, 0x00, 0x00, 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