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Micropython Asyncio example
import uasyncio as asyncio
from machine import Pin, PWM
from encoder import Encoder
from time import sleep_us, sleep_ms
button = Pin(14, Pin.IN, Pin.PULL_UP)
class LedStripController:
def __init__(self, enc, pwm):
self.encoder = enc
self.led_pwm = pwm
self.to_brightness = 0 # Percentage brightness. 0 = off
self.on = False # State of the LED strip
self.pressed = False # Has the button been pressed?
async def switch_loop(self):
while True:
if self.pressed:
self.to_brightness = 0 if self.on else 100
await asyncio.sleep_ms(50) # Debounce
self.pressed = False
self.on = not self.on
print('Button pushed, {}'.format(self.on))
await asyncio.sleep_ms(100)
async def encoder_loop(self):
while True:
val = self.encoder.value
self.encoder.cur_accel = max(0, self.encoder.cur_accel - self.encoder.accel)
if self.to_brightness != val:
self.to_brightness = val
await asyncio.sleep_ms(100)
def press_button(self, _):
self.pressed = True
def main(enc):
global button
pwm = PWM(Pin(15))
controller = LedStripController(enc, pwm)
button.irq(trigger=Pin.IRQ_FALLING, handler=controller.press_button)
loop = asyncio.get_event_loop()
# enc.close()
enc = Encoder(pin_clk=13, pin_dt=12, pin_mode=Pin.PULL_UP,
min_val=4, max_val=100, clicks=1, accel=2)
enc._value = 100
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