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1 changed files with 18 additions and 22 deletions
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src/nenuscanner/leds.py
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@ -1,8 +1,7 @@
from gpiozero import PWMLED import gpiod
from . import config from . import config
GPIO_LED_MAX_PWM_VALUE = 0.8
class Leds: class Leds:
def __enter__(self): def __enter__(self):
@ -17,41 +16,38 @@ class Leds:
def off(self): def off(self):
pass pass
class GpioLed: class GpioLed:
def __init__(self, gpio_pin: int): def __init__(self, gpio_pin: int):
self.gpio_pin = gpio_pin self.gpio_pin = gpio_pin
self.led = None self.led = None
def enter(self): def enter(self, chip: gpiod.Chip):
self.led = PWMLED( self.led = chip.get_line(self.gpio_pin)
self.gpio_pin, self.led.request(consumer=str(self), type=gpiod.LINE_REQ_DIR_OUT)
initial_value=1.0,
frequency=200,
)
self.off() self.off()
def exit(self): def exit(self):
self.off() self.off()
self.led.close() self.led.release()
self.led = None self.led = None
def set_value(self, value: float):
value = min(1.0, max(0.0, value))
self.led.set_value(1.0 - GPIO_LED_MAX_PWM_VALUE * value)
def on(self): def on(self):
self.set_value(0) self.led.set_value(0)
def off(self): def off(self):
self.set_value(1) self.led.set_value(1)
def __str__(self): def __str__(self):
return f'LED{self.gpio_pin:02}' return f'LED{self.gpio_pin:02}'
class GpioLeds(Leds): class GpioLeds(Leds):
def __init__(self, gpio_pins: list[int]): def __init__(self, chip: str, gpio_pins: list[int]):
self._entered = False self._entered = False
self.chip = gpiod.Chip(chip)
self.leds = [] self.leds = []
for pin in gpio_pins: for pin in gpio_pins:
@ -61,7 +57,7 @@ class GpioLeds(Leds):
if not self._entered: if not self._entered:
self._entered = True self._entered = True
for led in self.leds: for led in self.leds:
led.enter() led.enter(self.chip)
return self return self
def __exit__(self, *args): def __exit__(self, *args):
@ -147,7 +143,7 @@ class DummyLeds(Leds):
raise ValueError(f"No LED with UUID {uuid}") raise ValueError(f"No LED with UUID {uuid}")
_leds = GpioLeds(config.LEDS_UUIDS) if config.GPIO_CHIP is not None else DummyLeds(config.LEDS_UUIDS) _leds = GpioLeds(config.GPIO_CHIP, config.LEDS_UUIDS) if config.GPIO_CHIP is not None else DummyLeds(config.LEDS_UUIDS)
def get() -> Leds: def get() -> Leds: