Buzzer
set_state
Parameters: state
Should be an integer value of 1 or 0.
Sets the state of the buzzer on or off.
is_on
Returns true if the buzzer is on, false if the buzzer is off.
turn_on
Turns the buzzer on.
turn_off
Turns the buzzer off.
toggle
Toggles the state of the buzzer. (If the buzzer is on, then it will be turned off, if it is off, then it will be turned on.)