/* Copyright (c) 2017 FIRST. All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted (subject to the limitations in the disclaimer below) provided that * the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, this * list of conditions and the following disclaimer in the documentation and/or * other materials provided with the distribution. * * Neither the name of FIRST nor the names of its contributors may be used to endorse or * promote products derived from this software without specific prior written permission. * * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS * LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.firstinspires.ftc.robotcontroller.external.samples; import com.qualcomm.robotcore.eventloop.opmode.Disabled; import com.qualcomm.robotcore.eventloop.opmode.LinearOpMode; import com.qualcomm.robotcore.eventloop.opmode.TeleOp; import com.qualcomm.robotcore.hardware.DcMotor; /** * This OpMode ramps a single motor speed up and down repeatedly until Stop is pressed. * The code is structured as a LinearOpMode * * This code assumes a DC motor configured with the name "left_drive" as is found on a pushbot. * * INCREMENT sets how much to increase/decrease the power each cycle * CYCLE_MS sets the update period. * * Use Android Studio to Copy this Class, and Paste it into your team's code folder with a new name. * Remove or comment out the @Disabled line to add this opmode to the Driver Station OpMode list */ @TeleOp(name = "Concept: Ramp Motor Speed", group = "Concept") @Disabled public class ConceptRampMotorSpeed extends LinearOpMode { static final double INCREMENT = 0.01; // amount to ramp motor each CYCLE_MS cycle static final int CYCLE_MS = 50; // period of each cycle static final double MAX_FWD = 1.0; // Maximum FWD power applied to motor static final double MAX_REV = -1.0; // Maximum REV power applied to motor // Define class members DcMotor motor; double power = 0; boolean rampUp = true; @Override public void runOpMode() { // Connect to motor (Assume standard left wheel) // Change the text in quotes to match any motor name on your robot. motor = hardwareMap.get(DcMotor.class, "left_drive"); // Wait for the start button telemetry.addData(">", "Press Start to run Motors." ); telemetry.update(); waitForStart(); // Ramp motor speeds till stop pressed. while(opModeIsActive()) { // Ramp the motors, according to the rampUp variable. if (rampUp) { // Keep stepping up until we hit the max value. power += INCREMENT ; if (power >= MAX_FWD ) { power = MAX_FWD; rampUp = !rampUp; // Switch ramp direction } } else { // Keep stepping down until we hit the min value. power -= INCREMENT ; if (power <= MAX_REV ) { power = MAX_REV; rampUp = !rampUp; // Switch ramp direction } } // Display the current value telemetry.addData("Motor Power", "%5.2f", power); telemetry.addData(">", "Press Stop to end test." ); telemetry.update(); // Set the motor to the new power and pause; motor.setPower(power); sleep(CYCLE_MS); idle(); } // Turn off motor and signal done; motor.setPower(0); telemetry.addData(">", "Done"); telemetry.update(); } }