Code snippet to control Raspberry Pi from Scala (sbt console)

build.sbt

scalaVersion := "2.13.1"
name := "pi4r"
version := "0.0.1-SNAPSHOT"
libraryDependencies ++= Seq(
  "com.pi4j" % "pi4j-core" % "1.2",
  "com.pi4j" % "pi4j-device" % "1.2",
  "com.pi4j" % "pi4j-gpio-extension" % "1.2",
  "com.pi4j" % "pi4j-service" % "1.1",
  "com.pi4j" % "pi4j-native" % "1.2" pomOnly()
)

initialCommands in console += {
  Iterator(
    "com.pi4j.io.gpio._",
    "com.pi4j.wiringpi._"
  ).map("import "+).mkString("\n") + "\n" +
  "Gpio.wiringPiSetupGpio()\n"
}