29 lines
666 B
Python
29 lines
666 B
Python
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# See original soft_pwm.py for detailed comments.
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import uasyncio
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from hwconfig import LED
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async def pwm_cycle(led, duty, cycles):
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duty_off = 20 - duty
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for i in range(cycles):
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if duty:
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led.value(1)
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await uasyncio.sleep_ms(duty)
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if duty_off:
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led.value(0)
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await uasyncio.sleep_ms(duty_off)
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async def fade_in_out(LED):
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while True:
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# Fade in
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for i in range(1, 21):
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await pwm_cycle(LED, i, 2)
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# Fade out
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for i in range(20, 0, -1):
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await pwm_cycle(LED, i, 2)
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loop = uasyncio.get_event_loop()
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loop.run_until_complete(fade_in_out(LED))
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