Pi4K

Pi4J Kotlin bindings.

Demo

Make sure to check Examples.kt.

fun blink() = digitalOutput(GPIO_01) {
    while (true) {
        toggle()
        delay(500)
    }
}

• Pulse:

  digitalOutput(GPIO_01).pulse(600)
  

• Triggers:

  val input = digitalInput(GPIO_04)
  val output = digitalOutput(GPIO_05)
  input.trigger(output) //output is HIGH when input is HIGH.
  // input.trigger(output, whenState = PinState.LOW, targetState = PinState.HIGH) //output is HIGH when input is LOW.
  

• Pulse triggers:

  val input = digitalInput(GPIO_04)
  val output = digitalOutput(GPIO_05)
  input.triggerPulse(output, PinState.HIGH, millis = 1000) //when input is HIGH, output is HIGH for 1 second
  

• State change listeners:

  digitalInput(GPIO_06).onStateChange { event, edge, state -> println(state) }
  

• PWM

  pwm(clockDivisor = 500, mode = PWM_MODE_MS, range = 1000)
  pwmOutput(GPIO_01, 400)
  

• Software PWM

  softPwmOutput(GPIO_01, 400)
  

• Analog counterparts are also available.

• When done with gpio, housekeeping is necessary;

gpioShutdown()

Testing

Tests were simulated on my machine using the PI4J_PLATFORM=Simulated Environment variable.
However, I was not able to mock/test AnalogPins bindings. Contributions are always welcome.

Dependency

• Gradle

Add it in your root build.gradle at the end of repositories:

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

Add the dependency:

dependencies {
    implementation 'com.github.mhashim6:Pi4K:0.1'
}

• Maven xml <repositories> <repository> <id>jitpack.io</id> <url>https://jitpack.io</url> </repository> </repositories> Add the dependency: xml <dependency> <groupId>com.github.mhashim6</groupId> <artifactId>Pi4K</artifactId> <version>0.1</version> </dependency>