# SPDX-FileCopyrightText: 2017 Scott Shawcroft for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""
`adafruit_waveform.square`
====================================================
This library generates squard waveforms that can be used to generate
squard audio signals.
* Author(s): Scott Shawcroft, BrentRu
"""
import array
__version__ = "0.0.0+auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_Waveform.git"
[docs]
def square_wave(sample_length: int = 2):
"""Generate a single square wave of sample_length size"""
square = array.array("H", [0] * sample_length)
for i in range(sample_length // 2):
square[i] = 0xFFFF
return square