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libgpiod 2.x api

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This commit is contained in:
Maxim Devaev
2024-01-14 22:25:09 +02:00
parent e1c6d1a990
commit e28dec4e33
8 changed files with 141 additions and 136 deletions
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27
kvmd/plugins/hid/spi.py
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@@ -121,7 +121,7 @@ class _SpiPhy(BasePhy): # pylint: disable=too-many-instance-attributes
@contextlib.contextmanager
def connected(self) -> Generator[_SpiPhyConnection, None, None]: # type: ignore
with self.__sw_cs_connected() as sw_cs_line:
with self.__sw_cs_connected() as switch_cs:
with contextlib.closing(spidev.SpiDev(self.__bus, self.__chip)) as spi:
spi.mode = 0
spi.no_cs = (not self.__hw_cs)
@@ -129,12 +129,12 @@ class _SpiPhy(BasePhy): # pylint: disable=too-many-instance-attributes
def inner_xfer(data: bytes) -> bytes:
try:
if sw_cs_line is not None:
sw_cs_line.set_value(0)
if switch_cs is not None:
switch_cs(False)
return spi.xfer(data, self.__max_freq, self.__block_usec)
finally:
if sw_cs_line is not None:
sw_cs_line.set_value(1)
if switch_cs is not None:
switch_cs(True)
if self.__sw_cs_per_byte:
# Режим для Pico, когда CS должен взводиться для отдельных байтов
@@ -153,12 +153,19 @@ class _SpiPhy(BasePhy): # pylint: disable=too-many-instance-attributes
)
@contextlib.contextmanager
def __sw_cs_connected(self) -> Generator[(gpiod.Line | None), None, None]:
def __sw_cs_connected(self) -> Generator[(Callable[[bool], bool] | None), None, None]:
if self.__sw_cs_pin > 0:
with contextlib.closing(gpiod.Chip(self.__gpio_device_path)) as chip:
line = chip.get_line(self.__sw_cs_pin)
line.request("kvmd::hid::sw_cs", gpiod.LINE_REQ_DIR_OUT, default_vals=[1])
yield line
with gpiod.request_lines(
self.__gpio_device_path,
consumer="kvmd::hid",
config={
self.__sw_cs_pin: gpiod.LineSettings(
direction=gpiod.line.Direction.OUTPUT,
output_value=gpiod.line.Value(True),
),
},
) as line_request:
yield (lambda state: line_request.set_value(self.__sw_cs_pin, gpiod.line.Value(state)))
else:
yield None