-
Notifications
You must be signed in to change notification settings - Fork 1
/
RobotAutoDriveByEncoder_Linear.java
187 lines (161 loc) · 9.21 KB
/
RobotAutoDriveByEncoder_Linear.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/* 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.Autonomous;
import com.qualcomm.robotcore.eventloop.opmode.Disabled;
import com.qualcomm.robotcore.eventloop.opmode.LinearOpMode;
import com.qualcomm.robotcore.hardware.DcMotor;
import com.qualcomm.robotcore.util.ElapsedTime;
/*
* This OpMode illustrates the concept of driving a path based on encoder counts.
* The code is structured as a LinearOpMode
*
* The code REQUIRES that you DO have encoders on the wheels,
* otherwise you would use: RobotAutoDriveByTime;
*
* This code ALSO requires that the drive Motors have been configured such that a positive
* power command moves them forward, and causes the encoders to count UP.
*
* The desired path in this example is:
* - Drive forward for 48 inches
* - Spin right for 12 Inches
* - Drive Backward for 24 inches
* - Stop and close the claw.
*
* The code is written using a method called: encoderDrive(speed, leftInches, rightInches, timeoutS)
* that performs the actual movement.
* This method assumes that each movement is relative to the last stopping place.
* There are other ways to perform encoder based moves, but this method is probably the simplest.
* This code uses the RUN_TO_POSITION mode to enable the Motor controllers to generate the run profile
*
* 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
*/
@Autonomous(name="Robot: Auto Drive By Encoder", group="Robot")
@Disabled
public class RobotAutoDriveByEncoder_Linear extends LinearOpMode {
/* Declare OpMode members. */
private DcMotor leftDrive = null;
private DcMotor rightDrive = null;
private ElapsedTime runtime = new ElapsedTime();
// Calculate the COUNTS_PER_INCH for your specific drive train.
// Go to your motor vendor website to determine your motor's COUNTS_PER_MOTOR_REV
// For external drive gearing, set DRIVE_GEAR_REDUCTION as needed.
// For example, use a value of 2.0 for a 12-tooth spur gear driving a 24-tooth spur gear.
// This is gearing DOWN for less speed and more torque.
// For gearing UP, use a gear ratio less than 1.0. Note this will affect the direction of wheel rotation.
static final double COUNTS_PER_MOTOR_REV = 1440 ; // eg: TETRIX Motor Encoder
static final double DRIVE_GEAR_REDUCTION = 1.0 ; // No External Gearing.
static final double WHEEL_DIAMETER_INCHES = 4.0 ; // For figuring circumference
static final double COUNTS_PER_INCH = (COUNTS_PER_MOTOR_REV * DRIVE_GEAR_REDUCTION) /
(WHEEL_DIAMETER_INCHES * 3.1415);
static final double DRIVE_SPEED = 0.6;
static final double TURN_SPEED = 0.5;
@Override
public void runOpMode() {
// Initialize the drive system variables.
leftDrive = hardwareMap.get(DcMotor.class, "left_drive");
rightDrive = hardwareMap.get(DcMotor.class, "right_drive");
// To drive forward, most robots need the motor on one side to be reversed, because the axles point in opposite directions.
// When run, this OpMode should start both motors driving forward. So adjust these two lines based on your first test drive.
// Note: The settings here assume direct drive on left and right wheels. Gear Reduction or 90 Deg drives may require direction flips
leftDrive.setDirection(DcMotor.Direction.REVERSE);
rightDrive.setDirection(DcMotor.Direction.FORWARD);
leftDrive.setMode(DcMotor.RunMode.STOP_AND_RESET_ENCODER);
rightDrive.setMode(DcMotor.RunMode.STOP_AND_RESET_ENCODER);
leftDrive.setMode(DcMotor.RunMode.RUN_USING_ENCODER);
rightDrive.setMode(DcMotor.RunMode.RUN_USING_ENCODER);
// Send telemetry message to indicate successful Encoder reset
telemetry.addData("Starting at", "%7d :%7d",
leftDrive.getCurrentPosition(),
rightDrive.getCurrentPosition());
telemetry.update();
// Wait for the game to start (driver presses PLAY)
waitForStart();
// Step through each leg of the path,
// Note: Reverse movement is obtained by setting a negative distance (not speed)
encoderDrive(DRIVE_SPEED, 48, 48, 5.0); // S1: Forward 47 Inches with 5 Sec timeout
encoderDrive(TURN_SPEED, 12, -12, 4.0); // S2: Turn Right 12 Inches with 4 Sec timeout
encoderDrive(DRIVE_SPEED, -24, -24, 4.0); // S3: Reverse 24 Inches with 4 Sec timeout
telemetry.addData("Path", "Complete");
telemetry.update();
sleep(1000); // pause to display final telemetry message.
}
/*
* Method to perform a relative move, based on encoder counts.
* Encoders are not reset as the move is based on the current position.
* Move will stop if any of three conditions occur:
* 1) Move gets to the desired position
* 2) Move runs out of time
* 3) Driver stops the OpMode running.
*/
public void encoderDrive(double speed,
double leftInches, double rightInches,
double timeoutS) {
int newLeftTarget;
int newRightTarget;
// Ensure that the OpMode is still active
if (opModeIsActive()) {
// Determine new target position, and pass to motor controller
newLeftTarget = leftDrive.getCurrentPosition() + (int)(leftInches * COUNTS_PER_INCH);
newRightTarget = rightDrive.getCurrentPosition() + (int)(rightInches * COUNTS_PER_INCH);
leftDrive.setTargetPosition(newLeftTarget);
rightDrive.setTargetPosition(newRightTarget);
// Turn On RUN_TO_POSITION
leftDrive.setMode(DcMotor.RunMode.RUN_TO_POSITION);
rightDrive.setMode(DcMotor.RunMode.RUN_TO_POSITION);
// reset the timeout time and start motion.
runtime.reset();
leftDrive.setPower(Math.abs(speed));
rightDrive.setPower(Math.abs(speed));
// keep looping while we are still active, and there is time left, and both motors are running.
// Note: We use (isBusy() && isBusy()) in the loop test, which means that when EITHER motor hits
// its target position, the motion will stop. This is "safer" in the event that the robot will
// always end the motion as soon as possible.
// However, if you require that BOTH motors have finished their moves before the robot continues
// onto the next step, use (isBusy() || isBusy()) in the loop test.
while (opModeIsActive() &&
(runtime.seconds() < timeoutS) &&
(leftDrive.isBusy() && rightDrive.isBusy())) {
// Display it for the driver.
telemetry.addData("Running to", " %7d :%7d", newLeftTarget, newRightTarget);
telemetry.addData("Currently at", " at %7d :%7d",
leftDrive.getCurrentPosition(), rightDrive.getCurrentPosition());
telemetry.update();
}
// Stop all motion;
leftDrive.setPower(0);
rightDrive.setPower(0);
// Turn off RUN_TO_POSITION
leftDrive.setMode(DcMotor.RunMode.RUN_USING_ENCODER);
rightDrive.setMode(DcMotor.RunMode.RUN_USING_ENCODER);
sleep(250); // optional pause after each move.
}
}
}