24 lines
552 B
Python
24 lines
552 B
Python
# SPDX-FileCopyrightText: 2021 Brent Rubell for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""
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'fading_led.py'.
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=================================================
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fades a LED using pulseio's PWM
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"""
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import time
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import pwmio
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import board
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led = pwmio.PWMOut(board.D13, frequency=500, duty_cycle=0)
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while True:
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for i in range(100):
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if i < 50: # fade up
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led.duty_cycle = int(i * 2 * 65535 / 100)
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else: # fade down
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led.duty_cycle = 65535 - int((i - 50) * 2 * 65535 / 100)
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time.sleep(0.05)
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