[zumo-cc3200/zumo-cc3200.git] / src / Energia / libraries / ZumoCC3200 / utility / DriveLineCommand.cpp
1 /*
2 * Copyright (c) 2015, Texas Instruments Incorporated
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
33 #include <Energia.h>
35 #include "Utilities.h"
36 #include "ZumoMotors.h"
37 #include "IMUManager.h"
39 #include "DriveLineCommand.h"
41 DriveLineCommand::DriveLineCommand(float speed, float timeout)
42 {
43 _speed = speed;
44 _forward = _speed > 0;
45 steerController = PIDController(0.03, 0.0, 0.0);
46 numSeconds = timeout;
47 initialized = false;
48 }
50 void DriveLineCommand::run(Utilities::MotorInfo &info)
51 {
52 if (!timedOut) {
53 float error = Utilities::wrapAngle(
54 IMUManager::getGyroYaw() - targetAngle);
55 float power = steerController.calculate(error);
56 power = Utilities::saturate(power, _speed - (float) 1.0,
57 (float) 1.0 - _speed);
58 float lTotal = Utilities::clip((_speed + power) * 400);
59 float rTotal = Utilities::clip((_speed - power) * 400);
60 if (!_forward) {
61 float temp = lTotal;
62 lTotal = -rTotal;
63 rTotal = -temp;
64 }
65 if (!timedOut) {
66 Serial.print("lTotal: ");
67 Serial.print(lTotal);
68 Serial.print(" rTotal: ");
69 Serial.println(rTotal);
70 ZumoMotors::setLeftSpeed(lTotal);
71 ZumoMotors::setRightSpeed(rTotal);
72 }
73 else {
74 ZumoMotors::setLeftSpeed(0);
75 ZumoMotors::setRightSpeed(0);
76 }
77 timedOut = ((millis() - initTime) > ((int) (numSeconds * 1000.0)));
79 info.error = error;
80 info.leftSpeed = lTotal;
81 info.rightSpeed = rTotal;
82 info.time = (float) millis();
83 }
84 }
86 void DriveLineCommand::initialize()
87 {
88 targetAngle = IMUManager::getGyroYaw();
89 initTime = millis();
90 initialized = true;
91 timedOut = false;
92 }
94 void DriveLineCommand::end()
95 {
96 ZumoMotors::setLeftSpeed(0);
97 ZumoMotors::setRightSpeed(0);
98 timedOut = true;
99 initialized = false;
100 }
102 bool DriveLineCommand::isFinished()
103 {
104 return timedOut;
105 }
107 bool DriveLineCommand::hasBeenInitialized()
108 {
109 return initialized;
110 }
112 bool DriveLineCommand::isTimedOut()
113 {
114 return timedOut;
115 }