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auto-reset hid

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This commit is contained in:
Devaev Maxim
2020-11-23 05:01:33 +03:00
parent 31ca16a4f4
commit d58f0847d5
2 changed files with 70 additions and 47 deletions
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38
kvmd/plugins/hid/_mcu/gpio.py
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@@ -20,6 +20,10 @@
# ========================================================================== #
import types
import time
from typing import Type
from typing import Optional
import gpiod
@@ -27,8 +31,6 @@ import gpiod
from ....logging import get_logger
from .... import env
from .... import aiotools
from .... import aiogp
# =====
@@ -46,9 +48,8 @@ class Gpio:
self.__chip: Optional[gpiod.Chip] = None
self.__reset_line: Optional[gpiod.Line] = None
self.__reset_wip = False
def open(self) -> None:
def __enter__(self) -> None:
if self.__reset_pin >= 0:
assert self.__chip is None
assert self.__reset_line is None
@@ -56,23 +57,28 @@ class Gpio:
self.__reset_line = self.__chip.get_line(self.__reset_pin)
self.__reset_line.request("kvmd::hid::reset", gpiod.LINE_REQ_DIR_OUT, default_vals=[int(self.__reset_inverted)])
def close(self) -> None:
def __exit__(
self,
_exc_type: Type[BaseException],
_exc: BaseException,
_tb: types.TracebackType,
) -> None:
if self.__chip:
try:
self.__chip.close()
except Exception:
pass
self.__reset_line = None
self.__chip = None
@aiotools.atomic
async def reset(self) -> None:
def reset(self) -> None:
if self.__reset_pin >= 0:
assert self.__reset_line
if not self.__reset_wip:
self.__reset_wip = True
try:
await aiogp.pulse(self.__reset_line, self.__reset_delay, 1, self.__reset_inverted)
finally:
self.__reset_wip = False
get_logger(0).info("Reset HID performed")
else:
get_logger(0).info("Another reset HID in progress")
try:
self.__reset_line.set_value(int(not self.__reset_inverted))
time.sleep(self.__reset_delay)
finally:
self.__reset_line.set_value(int(self.__reset_inverted))
time.sleep(1)
get_logger(0).info("Reset HID performed")