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device.py
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device.py
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from evdev import ecodes, InputDevice
import fcntl
import logging
import os
import re
import select
import time
logging.basicConfig(level=logging.DEBUG)
class Device:
last_axis_value = {
ecodes.ABS_X: 0,
ecodes.ABS_Y: 0,
ecodes.ABS_Z: 0,
ecodes.ABS_RZ: 0,
}
def __init__(self, device_manager, data):
self.device_manager = device_manager
self.input_device = None
self.seat_id = None
self.vendor_id = None
self.product_id = None
self.usb_id = None
self.dev_path = None
self.dev_name = None
self.name = None
self.ready = True
self.set(data)
def set(self, data):
for key, value in data.items():
setattr(self, key, value)
def close(self):
if self.input_device is not None:
self.input_device.close()
self.input_device = None
def disconnect(self):
self.ready = False
self.close()
def reconnect(self):
self.ready = True
def is_ready(self):
return self.ready
def get_id(self):
return self.seat_id
def device_file(self, filename):
return os.path.join(self.dev_path, filename)
def checked_device_file(self, filename):
path = self.device_file(filename)
if not os.access(path, os.F_OK | os.R_OK | os.W_OK):
return False
return path
def check_file_permissions(self, filename):
if filename is None:
return True
path = self.device_file(filename)
if not os.access(path, os.F_OK):
return True
if os.access(path, os.R_OK | os.W_OK):
return True
return False
def get_max_range(self):
return self.max_range
def list_modes(self):
path = self.checked_device_file("alternate_modes")
if not path:
return None
with open(path, "r") as file:
data = file.read()
lines = data.splitlines()
reg = re.compile("([^:]+): (.*)")
alternate_modes = []
for line in lines:
matches = reg.match(line)
mode_id = matches.group(1)
if mode_id == "native":
continue
name = matches.group(2)
if name.endswith("*"):
name = name[:-2]
selected = True
else:
selected = False
alternate_modes.append([mode_id, name, selected])
return alternate_modes
def get_mode(self):
path = self.checked_device_file("alternate_modes")
if not path:
return None
with open(path, "r") as file:
data = file.read()
lines = data.splitlines()
reg = re.compile("([^:]+): (.*)")
for line in lines:
matches = reg.match(line)
mode_id = matches.group(1)
if mode_id == "native":
continue
name = matches.group(2)
if name.endswith("*"):
return mode_id
return mode_id
def set_mode(self, emulation_mode):
path = self.checked_device_file("alternate_modes")
if not path:
return False
old_mode = self.get_mode()
if old_mode == emulation_mode:
return True
self.disconnect()
logging.debug("Setting mode: %s", str(emulation_mode))
with open(path, "w") as file:
file.write(emulation_mode)
# Wait for device ready
while not self.is_ready():
time.sleep(1)
# Wait a bit more
time.sleep(5)
return True
def get_range(self):
path = self.checked_device_file("range")
if not path:
return None
with open(path, "r") as file:
data = file.read()
wrange = data.strip()
return int(wrange)
def set_range(self, wrange):
path = self.checked_device_file("range")
if not path:
return False
wrange = str(wrange)
logging.debug("Setting range: %s", wrange)
with open(path, "w") as file:
file.write(wrange)
return True
def get_combine_pedals(self):
path = self.checked_device_file("combine_pedals")
if not path:
return None
with open(path, "r") as file:
data = file.read()
combine_pedals = data.strip()
return int(combine_pedals)
def set_combine_pedals(self, combine_pedals):
path = self.checked_device_file("combine_pedals")
if not path:
return False
combine_pedals = str(combine_pedals)
logging.debug("Setting combined pedals: %s", combine_pedals)
with open(path, "w") as file:
file.write(combine_pedals)
return True
def get_autocenter(self):
path = self.checked_device_file("autocenter")
if not path:
return 0
with open(path, "r") as file:
data = file.read()
autocenter = data.strip()
return int(round((int(autocenter) * 100) / 65535))
def set_autocenter(self, autocenter):
autocenter = str(int(autocenter))
logging.debug("Setting autocenter strength: %s", autocenter)
path = self.checked_device_file("autocenter")
if path:
with open(path, "w") as file:
file.write(autocenter)
else:
input_device = self.get_input_device()
input_device.write(ecodes.EV_FF, ecodes.FF_AUTOCENTER, int(autocenter))
return True
def get_ff_gain(self):
path = self.checked_device_file("gain")
if not path:
return 65535
with open(path, "r") as file:
data = file.read()
gain = int(data.strip())
return int(gain)
def set_ff_gain(self, gain):
gain = str(int(gain))
logging.debug("Setting FF gain: %s", gain)
path = self.checked_device_file("gain")
if path:
with open(path, "w") as file:
file.write(gain)
else:
input_device = self.get_input_device()
input_device.write(ecodes.EV_FF, ecodes.FF_GAIN, int(gain))
def get_spring_level(self):
path = self.checked_device_file("spring_level")
if not path:
return None
with open(path, "r") as file:
data = file.read()
spring_level = data.strip()
return int(spring_level)
def set_spring_level(self, level):
path = self.checked_device_file("spring_level")
if not path:
return False
level = str(level)
logging.debug("Setting spring level: %s", level)
with open(path, "w") as file:
file.write(level)
return True
def get_damper_level(self):
path = self.checked_device_file("damper_level")
if not path:
return None
with open(path, "r") as file:
data = file.read()
damper_level = data.strip()
return int(damper_level)
def set_damper_level(self, level):
path = self.checked_device_file("damper_level")
if not path:
return False
level = str(level)
logging.debug("Setting damper level: %s", level)
with open(path, "w") as file:
file.write(level)
return True
def get_friction_level(self):
path = self.checked_device_file("friction_level")
if not path:
return None
with open(path, "r") as file:
data = file.read()
friction_level = data.strip()
return int(friction_level)
def set_friction_level(self, level):
path = self.checked_device_file("friction_level")
if not path:
return False
level = str(level)
logging.debug("Setting friction level: %s", level)
with open(path, "w") as file:
file.write(level)
return True
def get_ffb_leds(self):
path = self.checked_device_file("ffb_leds")
if not path:
return None
with open(path, "r") as file:
data = file.read()
ffb_leds = data.strip()
return int(ffb_leds)
def set_ffb_leds(self, ffb_leds):
path = self.checked_device_file("ffb_leds")
if not path:
return False
ffb_leds = str(ffb_leds)
logging.debug("Setting FF leds: %s", ffb_leds)
with open(path, "w") as file:
file.write(ffb_leds)
return True
def get_peak_ffb_level(self):
path = self.checked_device_file("peak_ffb_level")
if not path:
return None
with open(path, "r") as file:
data = file.read()
peak_ffb_level = data.strip()
return int(peak_ffb_level)
def set_peak_ffb_level(self, peak_ffb_level):
path = self.checked_device_file("peak_ffb_level")
if not path:
return False
peak_ffb_level = str(peak_ffb_level)
logging.debug("Setting peak FF level: %s", peak_ffb_level)
with open(path, "w") as file:
file.write(peak_ffb_level)
return True
def center_wheel(self):
self.set_autocenter(65535)
time.sleep(1)
self.set_autocenter(0)
def check_permissions(self):
if not os.access(self.dev_path, os.F_OK | os.R_OK | os.X_OK):
return False
if not self.check_file_permissions('alternate_modes'):
return False
if not self.check_file_permissions('range'):
return False
if not self.check_file_permissions('combine_pedals'):
return False
if not self.check_file_permissions('gain'):
return False
if not self.check_file_permissions('autocenter'):
return False
if not self.check_file_permissions('spring_level'):
return False
if not self.check_file_permissions('damper_level'):
return False
if not self.check_file_permissions('friction_level'):
return False
if not self.check_file_permissions('ffb_leds'):
return False
if not self.check_file_permissions('peak_ffb_level'):
return False
return True
def get_last_axis_value(self, axis):
return self.last_axis_value[axis]
def get_input_device(self):
if self.input_device is None or self.input_device.fd == -1:
if os.access(self.dev_name, os.R_OK):
self.input_device = InputDevice(self.dev_name)
return self.input_device
def read_events(self, timeout):
input_device = self.get_input_device()
if input_device is not None and input_device.fd != -1:
r, _, _ = select.select({input_device.fd: input_device}, [], [], timeout)
if input_device.fd in r:
for event in input_device.read():
event = self.normalize_event(event)
if event.type == ecodes.EV_ABS:
self.last_axis_value[ecodes.ABS_X] = event.value
yield event
def normalize_event(self, event):
if event.type == ecodes.EV_ABS:
if event.code == ecodes.ABS_X:
if self.usb_id in [self.device_manager.LG_WFG, self.device_manager.LG_WFFG]:
event.value = event.value * 64
elif self.usb_id not in [self.device_manager.LG_G29, self.device_manager.TM_T300RS] and self.vendor_id != self.device_manager.VENDOR_FANATEC:
event.value = event.value * 4
elif self.usb_id in [self.device_manager.LG_G25, self.device_manager.LG_G27, self.device_manager.LG_G29, self.device_manager.TM_T300RS]:
if event.code == ecodes.ABS_Y:
event.code = ecodes.ABS_RZ
elif event.code == ecodes.ABS_Z:
event.code = ecodes.ABS_Y
elif event.code == ecodes.ABS_RZ:
event.code = ecodes.ABS_Z
elif self.vendor_id == self.device_manager.VENDOR_FANATEC:
if event.code in [ecodes.ABS_Y, ecodes.ABS_Z, ecodes.ABS_RZ]:
event.value = int(event.value / 257)
if event.code == ecodes.ABS_RZ:
event.code = ecodes.ABS_Z
elif event.code == ecodes.ABS_Y:
event.code = ecodes.ABS_RZ
elif event.code == ecodes.ABS_Z:
event.code = ecodes.ABS_Y
return event