22 lines
662 B
Python
22 lines
662 B
Python
# SPDX-FileCopyrightText: 2018 Kattni Rembor for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""CircuitPython Essentials: PWM with Fixed Frequency example."""
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import time
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import board
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import pwmio
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# LED setup for most CircuitPython boards:
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led = pwmio.PWMOut(board.LED, frequency=5000, duty_cycle=0)
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# LED setup for QT Py M0:
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# led = pwmio.PWMOut(board.SCK, frequency=5000, duty_cycle=0)
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while True:
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for i in range(100):
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# PWM LED up and down
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if i < 50:
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led.duty_cycle = int(i * 2 * 65535 / 100) # Up
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else:
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led.duty_cycle = 65535 - int((i - 50) * 2 * 65535 / 100) # Down
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time.sleep(0.01)
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