mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 09:10:30 +08:00
e4903c5184
1. Add to /boot/config.txt
```
dtoverlay=pwm
```
2. Create /etc/udev/rules.d/99-kvmd-pwm.rules
```
SUBSYSTEM=="pwm*", ACTION=="add", RUN+="/bin/chgrp -R kvmd /sys%p", RUN+="/bin/chmod -R g=u /sys%p"
SUBSYSTEM=="pwm*", ACTION=="change", ENV{TRIGGER}!="none", RUN+="/bin/chgrp -R kvmd /sys%p", RUN+="/bin/chmod -R g=u /sys%p"
```
3. Connect Servo motor like SG90 PWM connection to RPi GPIO18, +5V and GND to a 5V and GND pin on header
4. Add to /etc/kvmd/override.yaml
```
kvmd:
gpio:
drivers:
servo1:
type: pwm
pwm_chip: 0 # PWM Chip Number
pwm_period: 20000000 # Servo Motor SG90 Period in nano-seconds
duty_cycle_push: 1500000 # Servo Motor SG90 duty_cycle for pushing button
duty_cycle_release: 1000000 # Servo Motor SG90 duty_cycle for releasing button
scheme:
short_press:
driver: servo1
pin: 0 # Pin number is the PWM channel number on the PWM Chip
mode: output
switch: false
pulse:
delay: 0.5
max_delay: 2
long_press:
driver: servo1
pin: 0 # Pin number is the PWM channel number on the PWM Chip
mode: output
switch: false
pulse:
delay: 2
max_delay: 2
extra_long_press:
driver: servo1
pin: 0 # Pin number is the PWM channel number on the PWM Chip
mode: output
switch: false
pulse:
delay: 10
max_delay: 20
view:
header:
title: Controls
table:
- ["#Servo - Short Press", "short_press|Press"]
- ["#Servo - Long Press", "long_press|Press"]
- ["#Servo - Extra Long Press", "extra_long_press|Press"]
```
127 lines
4.8 KiB
Python
127 lines
4.8 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main Pi-KVM daemon. #
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# #
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# Copyright (C) 2018-2021 Maxim Devaev <mdevaev@gmail.com> #
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# Shantur Rathore <i@shantur.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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from periphery import PWM
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from typing import Dict
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from typing import Optional
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from typing import Set
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from ...logging import get_logger
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from ... import tools
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from ... import aiotools
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from ...yamlconf import Option
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from ...validators.basic import valid_int_f0
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from . import GpioDriverOfflineError
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from . import UserGpioModes
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from . import BaseUserGpioDriver
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# =====
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class Plugin(BaseUserGpioDriver):
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def __init__( # pylint: disable=super-init-not-called
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self,
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instance_name: str,
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notifier: aiotools.AioNotifier,
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pwm_chip: int,
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pwm_period: int,
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duty_cycle_push: int,
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duty_cycle_release: int,
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) -> None:
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super().__init__(instance_name, notifier)
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self.__pwm_chip = pwm_chip
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self.__pwm_period = pwm_period
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self.__duty_cycle_push = duty_cycle_push
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self.__duty_cycle_release = duty_cycle_release
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self.__channels: Dict[int, Optional[bool]] = {}
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self.__channel_pwm: Dict[int, PWM] = {}
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@classmethod
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def get_plugin_options(cls) -> Dict:
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return {
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"pwm_chip": Option(0, type=valid_int_f0),
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"pwm_period": Option(20000000, type=valid_int_f0),
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"duty_cycle_push": Option(1500000, type=valid_int_f0),
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"duty_cycle_release": Option(1000000, type=valid_int_f0),
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}
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@classmethod
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def get_modes(cls) -> Set[str]:
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return set([UserGpioModes.OUTPUT])
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def register_input(self, pin: int, debounce: float) -> None:
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raise RuntimeError(f"Unsupported mode 'input' for pin={pin} on {self}")
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def register_output(self, pin: int, initial: Optional[bool]) -> None:
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self.__channels[pin] = initial
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def prepare(self) -> None:
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logger = get_logger(0)
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for (pin, initial) in self.__channels.items():
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try:
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logger.info("Probing pwm chip %d channel %d ...", self.__pwm_chip, pin)
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pwm = PWM(self.__pwm_chip, pin)
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self.__channel_pwm[pin] = pwm
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pwm.period_ns = self.__pwm_period
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pwm.duty_cycle_ns = self.__duty_cycle_push if initial else self.__duty_cycle_release
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pwm.enable()
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except Exception as err:
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logger.error("Can't get pwm chip %d channel %d: %s",
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self.__pwm_chip, pin, tools.efmt(err))
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async def run(self) -> None:
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await aiotools.wait_infinite()
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async def cleanup(self) -> None:
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for (pin, _) in self.__channels.items():
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self.__channel_pwm[pin].disable()
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self.__channel_pwm[pin].close()
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async def read(self, pin: int) -> bool:
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try:
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return self.__channel_pwm[pin].duty_cycle_ns == self.__duty_cycle_push
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except Exception:
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raise GpioDriverOfflineError(self)
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async def write(self, pin: int, state: bool) -> None:
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try:
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self.__channel_pwm[pin].duty_cycle_ns = self.__duty_cycle_push if state else self.__duty_cycle_release
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except Exception:
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raise GpioDriverOfflineError(self)
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def __str__(self) -> str:
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return f"PWM({self._instance_name})"
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__repr__ = __str__
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