[examples] Add snippets for Digital Input article (#7949)

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/snippets/analogtrigger/Main.java

@@ -0,0 +1,25 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.wpilibj.snippets.analogtrigger;
+
+import edu.wpi.first.wpilibj.RobotBase;
+
+/**
+ * Do NOT add any static variables to this class, or any initialization at all. Unless you know what
+ * you are doing, do not modify this file except to change the parameter class to the startRobot
+ * call.
+ */
+public final class Main {
+  private Main() {}
+
+  /**
+   * Main initialization function. Do not perform any initialization here.
+   *
+   * <p>If you change your main robot class, change the parameter type.
+   */
+  public static void main(String... args) {
+    RobotBase.startRobot(Robot::new);
+  }
+}

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/snippets/analogtrigger/Robot.java

@@ -0,0 +1,35 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.wpilibj.snippets.analogtrigger;
+
+import edu.wpi.first.wpilibj.AnalogInput;
+import edu.wpi.first.wpilibj.AnalogTrigger;
+import edu.wpi.first.wpilibj.TimedRobot;
+
+/**
+ * DigitalInput snippets for frc-docs.
+ * https://docs.wpilib.org/en/stable/docs/software/hardware-apis/sensors/digital-inputs-software.html
+ */
+public class Robot extends TimedRobot {
+  // Initializes an AnalogTrigger on port 0
+  AnalogTrigger m_trigger0 = new AnalogTrigger(0);
+  // Initializes an AnalogInput on port 1 and enables 2-bit oversampling
+  AnalogInput m_input = new AnalogInput(1);
+
+  // Initializes an AnalogTrigger using the above input
+  AnalogTrigger m_trigger1 = new AnalogTrigger(m_input);
+
+  /** Called once at the beginning of the robot program. */
+  public Robot() {
+    // Enables 2-bit oversampling
+    m_input.setAverageBits(2);
+    // Sets the trigger to enable at a raw value of 3500, and disable at a value of 1000
+    m_trigger0.setLimitsRaw(1000, 3500);
+    // Sets the trigger to enable at a voltage of 4 volts, and disable at a value of 1.5 volts
+    m_trigger0.setLimitsVoltage(1.5, 4);
+
+    m_trigger1.getTriggerState();
+  }
+}

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/snippets/digitalinput/Main.java

@@ -0,0 +1,25 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.wpilibj.snippets.digitalinput;
+
+import edu.wpi.first.wpilibj.RobotBase;
+
+/**
+ * Do NOT add any static variables to this class, or any initialization at all. Unless you know what
+ * you are doing, do not modify this file except to change the parameter class to the startRobot
+ * call.
+ */
+public final class Main {
+  private Main() {}
+
+  /**
+   * Main initialization function. Do not perform any initialization here.
+   *
+   * <p>If you change your main robot class, change the parameter type.
+   */
+  public static void main(String... args) {
+    RobotBase.startRobot(Robot::new);
+  }
+}

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/snippets/digitalinput/Robot.java

@@ -0,0 +1,23 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.wpilibj.snippets.digitalinput;
+
+import edu.wpi.first.wpilibj.DigitalInput;
+import edu.wpi.first.wpilibj.TimedRobot;
+
+/**
+ * DigitalInput snippets for frc-docs.
+ * https://docs.wpilib.org/en/stable/docs/software/hardware-apis/sensors/digital-inputs-software.html
+ */
+public class Robot extends TimedRobot {
+  // Initializes a DigitalInput on DIO 0
+  DigitalInput m_input = new DigitalInput(0);
+
+  @Override
+  public void teleopPeriodic() {
+    // Gets the value of the digital input.  Returns true if the circuit is open.
+    m_input.get();
+  }
+}

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/snippets/snippets.json

@@ -68,5 +68,28 @@
     "foldername": "limitswitch",
     "gradlebase": "java",
     "mainclass": "Main"
+  },
+  {
+    "name": "DigitalInput",
+    "description": "Snippets of Digital Input for frc-docs.",
+    "tags": [
+      "Hardware",
+      "Digital Input"
+    ],
+    "foldername": "digitalinput",
+    "gradlebase": "java",
+    "mainclass": "Main"
+  },
+  {
+    "name": "AnalogTrigger",
+    "description": "Snippets of Analog Trigger for frc-docs.",
+    "tags": [
+      "Hardware",
+      "Analog",
+      "Digital Input"
+    ],
+    "foldername": "analogtrigger",
+    "gradlebase": "java",
+    "mainclass": "Main"
   }
 ]