2019-02-15 07:20:26 +03:00

80 lines
2.3 KiB
Python

import asyncio
from typing import Dict
from typing import AsyncGenerator
from ...logging import get_logger
from ... import aioregion
from ... import gpio
# =====
class AtxIsBusy(aioregion.RegionIsBusyError):
pass
class Atx: # pylint: disable=too-many-instance-attributes
def __init__(
self,
power_led_pin: int,
hdd_led_pin: int,
power_switch_pin: int,
reset_switch_pin: int,
click_delay: float,
long_click_delay: float,
state_poll: float,
) -> None:
self.__power_led_pin = gpio.set_input(power_led_pin)
self.__hdd_led_pin = gpio.set_input(hdd_led_pin)
self.__power_switch_pin = gpio.set_output(power_switch_pin)
self.__reset_switch_pin = gpio.set_output(reset_switch_pin)
self.__click_delay = click_delay
self.__long_click_delay = long_click_delay
self.__state_poll = state_poll
self.__region = aioregion.AioExclusiveRegion(AtxIsBusy)
def get_state(self) -> Dict:
return {
"busy": self.__region.is_busy(),
"leds": {
"power": (not gpio.read(self.__power_led_pin)),
"hdd": (not gpio.read(self.__hdd_led_pin)),
},
}
async def poll_state(self) -> AsyncGenerator[Dict, None]:
while True:
yield self.get_state()
await asyncio.sleep(self.__state_poll)
async def click_power(self) -> None:
get_logger().info("Clicking power ...")
await self.__click(self.__power_switch_pin, self.__click_delay)
async def click_power_long(self) -> None:
get_logger().info("Clicking power (long press) ...")
await self.__click(self.__power_switch_pin, self.__long_click_delay)
async def click_reset(self) -> None:
get_logger().info("Clicking reset")
await self.__click(self.__reset_switch_pin, self.__click_delay)
async def __click(self, pin: int, delay: float) -> None:
self.__region.enter()
asyncio.ensure_future(self.__inner_click(pin, delay))
async def __inner_click(self, pin: int, delay: float) -> None:
try:
for flag in (True, False):
gpio.write(pin, flag)
await asyncio.sleep(delay)
finally:
self.__region.exit()