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.. SPDX-License-Identifier: GPL-2.0+
.. Copyright 2022, Heinrich Schuchardt <xypron.glpk@gmx.de>
sound command
=============
Synopsis
--------
::
sound init
sound play [len [freq]]
Description
-----------
The *sound* command is used to play a beep sound.
sound init
initializes the sound driver.
sound play
plays a square wave sound. It does not depend on previously calling
*sound init*.
len
duration of the sound in ms, defaults to 1000 ms
freq
frequency of the sound in Hz, defaults to 400 Hz
Configuration
-------------
The sound command is enabled by CONFIG_CMD_SOUND=y.
Return value
------------
The return value $? is 0 (true) if the command succeeds, 1 (false) otherwise.
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