SYNOPSIS
audio.buzz([freq, length])
DESCRIPTION
Generates a beep signal to the piezo buzzer output. freq specifies the frequency and length the time in ms. If frequency is zero, a pause is inserted.
Without arguments, the function generates a default beep.
All buzz requests are buffered and processed concurrently. The Lua program continues while beeps and pauses are processed.
Please note that a piezo buzzer is not part of the default hardware configuration.
EXAMPLE
>
audio.buzz(4000, 100)