Learn-rc-core.py
Hier das Lernskript, welches eine eigene Keytable für rc-core Fernbedienungen erstellt.
#!/usr/bin/python3 import functools import contextlib import signal import sys import time from argparse import ArgumentParser from pathlib import Path from evdev import InputDevice, ecodes BUTTONS = [ "KEY_OK", "KEY_UP", "KEY_DOWN", "KEY_MENU", "KEY_ESC", "KEY_LEFT", "KEY_RIGHT", "KEY_RED", "KEY_GREEN", "KEY_YELLOW", "KEY_BLUE", "KEY_0", "KEY_1", "KEY_2", "KEY_3", "KEY_4", "KEY_5", "KEY_6", "KEY_7", "KEY_8", "KEY_9", "KEY_INFO", "KEY_PLAY", "KEY_PAUSE", "KEY_PLAYPAUSE", "KEY_STOP", "KEY_RECORD", "KEY_FASTFORWARD", "KEY_REWIND", "KEY_NEXT", "KEY_BACK", "KEY_POWER2", "KEY_CHANNELUP", "KEY_CHANNELDOWN", "KEY_PREVIOUS", "KEY_VOLUMEUP", "KEY_VOLUMEDOWN", "KEY_MUTE", "KEY_SUBTITLE", "KEY_EPG", "KEY_CHANNEL", "KEY_FAVORITES", "KEY_MODE", "KEY_TIME", "KEY_PVR", "KEY_SETUP", "KEY_TEXT", "KEY_PROG1", "KEY_PROG2", "KEY_PROG3", "KEY_PROG4", "KEY_AUDIO", "KEY_VIDEO", "KEY_IMAGES", "KEY_FN", "KEY_SCREEN", ] RC_SYS_DEVICES = Path('/sys/class/rc/') DEVPATH = Path('/dev') debug = functools.partial(print, file=sys.stderr) def print_keymap(keytable, protocol, keys): print("[[protocols]]") print(f'name = "{keytable}"') print(f'protocol = "{protocol}"') print('[protocols.scancodes]') for keyname, scancode in keys.items(): print(f'{scancode:#06x} = "{keyname}"') def read_from_device(dev, keytable, protocol): def btn_generator(): for btn in BUTTONS: yield btn while True: yield None btn_gen = btn_generator() keymap = {} last_scancode = None last_ts = float('inf') button = next(btn_gen) first_btn = button with contextlib.closing(InputDevice(dev)) as dev: debug(f"Please press a button for {button}") for ev in dev.read_loop(): advance_button = False if ev.type == ecodes.EV_MSC: ts = ev.timestamp() if ( ev.value == keymap.get(first_btn) and last_scancode == keymap.get(first_btn) and ts - last_ts > .5 ): # skip button because user pressed KEY_OK # and it's not an unwanted repeat advance_button = True debug(f"skipped learning button {button}") elif last_scancode == ev.value: # repeated key pass elif ev.value != keymap.get(first_btn): debug(f"Got scancode {ev.value:#06x} for {button}.") advance_button = True keymap[button] = ev.value last_scancode = ev.value last_ts = ts last_scancode = ev.value if advance_button: button = next(btn_gen) if button: debug(f"Please press a button for {button} (press KEY_OK to skip)") else: break print_keymap(keytable, protocol, keymap) def list_devices(): devices = [] for rc_device in RC_SYS_DEVICES.glob('rc*'): device = {} device["path"] = rc_device device["sys"] = rc_device.name with open(next(rc_device.glob('input*/event*/uevent'))) as f: # read DEVNAME attribute (and others) for line in f: key, value = line.rstrip().split('=') device[key] = value with open(rc_device.joinpath('uevent')) as f: for line in f: key, value = line.rstrip().split('=') device[key] = value with open(rc_device.joinpath('protocols')) as f: protocols = f.read().rstrip().split() active_protocols = [p[1:-1] for p in protocols if ( p.startswith('[') and p != "[lirc]")] inactive_protocols = [p for p in protocols if not p.startswith('[')] device["protocols"] = protocols device["inactive_protocols"] = inactive_protocols device["active_protocols"] = active_protocols devices.append(device) return devices if __name__ == '__main__': parser = ArgumentParser(description="create keymaps for rc-core devices") parser.add_argument('-p', '--protocol', metavar='PROTOCOL', help='set ir-protocol') parser.add_argument('-d', '--device', metavar='DEVICE', default=None, help='ir device (e.g. rc0)') args = parser.parse_args() devices = list_devices() if not devices: sys.exit("No rc-core devices found. Exiting.") elif len(devices) == 1: print(f"Using device {devices[0]['NAME']}", file=sys.stderr) dev = devices[0]['path'] input_dev = devices[0]['DEVNAME'] keytable = devices[0]['NAME'] protocol = ",".join(devices[0]['active_protocols']) else: if args.device: for d in devices: if (d['sys'] == args.device or d['path'] == RC_SYS_DEVICES.joinpath(args.device)): dev = RC_SYS_DEVICES.joinpath(args.device) input_dev = d['DEVNAME'] keytable = d['NAME'] protocol = ",".join(d['active_protocols']) else: for i, d in enumerate(devices, start=1): if not args.protocol: print(f"{i}) {d['DEV_NAME']} ({','.join(d.get('active_protocols'))})") else: print(f"{i}) {d['DEV_NAME']}") try: dev_num = int(input("\tUse device numer: ")) if dev_num < 0 or dev_num > len(devices): raise ValueError d = devices[dev_num - 1] except (ValueError, IndexError): sys.exit("invalid device number") input_dev = d['DEVNAME'] keytable = d['NAME'] protocol = ",".join(d['active_protocols']) dev = d['path'] # set ir-protocol(s) if args.protocol: try: with open(dev.joinpath('protocols'), 'w') as f: f.write(args.protocol) except PermissionError as e: sys.exit(f"Error: insifficient permissions to change protocol - are you root?") except IOError as e: sys.exit(f"Error: could not set protocol(s) to {args.protocol}: {e}") protocol = args.protocol input_dev = DEVPATH.joinpath(input_dev) debug("using device: ", input_dev) def signal_handler(signum, frame): sys.exit() for signame in {'SIGINT', 'SIGTERM'}: signal.signal( getattr(signal, signame), signal_handler) try: read_from_device(input_dev, keytable, protocol) except PermissionError as e: sys.exit(f"Error: can't open {input_dev} - are you root?")