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# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT
"""
'tone_demo.py'.
=================================================
a short piezo song using tone()
"""
import time
import board
import simpleio
while True:
for f in (262, 294, 330, 349, 392, 440, 494, 523):
simpleio.tone(board.A0, f, 0.25)
time.sleep(1)
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