System.Hardware.Arduino.Parts.Piezo

Abstractions for piezo speakers.

Declaring a piezo speaker

data Piezo

A piezo speaker. Note that this type is abstract, use speaker to create an instance.

speaker

Arguments

:: Int

Tempo. Higher numbers mean faster melodies; in general.

-> Pin

Pin controlling the piezo. Should be a pin that supports PWM mode.

-> Arduino Piezo

Create a piezo speaker instance.

Notes you can play, and durations

data Note

Musical notes, notes around middle-C

Constructors

A

B

C

D

E

F

G

R

Instances

Eq Note

Show Note

data Duration

Beat counts

Constructors

Whole

Half

Quarter

Eight

Instances

Eq Duration

Show Duration

Playing a note, rest, or silencing

playNote :: Piezo -> (Note, Duration) -> Arduino ()

Play the given note for the duration

rest :: Piezo -> Duration -> Arduino ()

Rest for a given duration:

silence :: Piezo -> Arduino ()

Turn the speaker off

Play a sequence of notes:

playNotes :: Piezo -> [(Note, Duration)] -> Arduino ()

Play a sequence of notes with given durations: