ROME2 - TI / Mbed 2 deprecated ROME2 - Praktikum

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed

IRSensor.cpp@1:08ca9b208045, 2017-03-31 (annotated)

Committer:
solcager
Date:
Fri Mar 31 11:00:19 2017 +0000
Revision:
1:08ca9b208045
Parent:
0:646b6cf24af2 
P3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
solcager 1:08ca9b208045 1 /*
solcager 1:08ca9b208045 2 * IRSensor.cpp
solcager 1:08ca9b208045 3 * Copyright (c) 2017, ZHAW
solcager 1:08ca9b208045 4 * All rights reserved.
solcager 1:08ca9b208045 5 */
favereli 0:646b6cf24af2 6
favereli 0:646b6cf24af2 7 #include <cmath>
solcager 1:08ca9b208045 8 #include "IRSensor.h"
favereli 0:646b6cf24af2 9
favereli 0:646b6cf24af2 10 using namespace std;
favereli 0:646b6cf24af2 11
solcager 1:08ca9b208045 12 /**
solcager 1:08ca9b208045 13 * Creates an IRSensor object.
solcager 1:08ca9b208045 14 * @param distance an analog input object to read the voltage of the sensor.
solcager 1:08ca9b208045 15 * @param bit0 a digital output to set the first bit of the multiplexer.
solcager 1:08ca9b208045 16 * @param bit1 a digital output to set the second bit of the multiplexer.
solcager 1:08ca9b208045 17 * @param bit2 a digital output to set the third bit of the multiplexer.
solcager 1:08ca9b208045 18 * @param number the number of the sensor, either 0, 1, 2, 3, 4 or 5.
solcager 1:08ca9b208045 19 */
solcager 1:08ca9b208045 20 IRSensor::IRSensor(AnalogIn& distance, DigitalOut& bit0, DigitalOut& bit1, DigitalOut& bit2, int number) : distance(distance), bit0(bit0), bit1(bit1), bit2(bit2) {
solcager 1:08ca9b208045 21
solcager 1:08ca9b208045 22 // set local references to objects
solcager 1:08ca9b208045 23
favereli 0:646b6cf24af2 24 this->number = number;
favereli 0:646b6cf24af2 25 }
favereli 0:646b6cf24af2 26
solcager 1:08ca9b208045 27 /**
solcager 1:08ca9b208045 28 * Deletes the IRSensor object.
solcager 1:08ca9b208045 29 */
favereli 0:646b6cf24af2 30 IRSensor::~IRSensor() {}
favereli 0:646b6cf24af2 31
solcager 1:08ca9b208045 32 /**
solcager 1:08ca9b208045 33 * Gets the distance measured with the IR sensor in [m].
solcager 1:08ca9b208045 34 * @return the distance, given in [m].
solcager 1:08ca9b208045 35 */
favereli 0:646b6cf24af2 36 float IRSensor::read() {
solcager 1:08ca9b208045 37
solcager 1:08ca9b208045 38 bit0 = (number >> 0) & 1;
solcager 1:08ca9b208045 39 bit1 = (number >> 1) & 1;
solcager 1:08ca9b208045 40 bit2 = (number >> 2) & 1;
solcager 1:08ca9b208045 41
solcager 1:08ca9b208045 42 float d = -0.58f*sqrt(distance)+0.58f; // calculate the distance in [m]
favereli 0:646b6cf24af2 43
favereli 0:646b6cf24af2 44 return d;
solcager 1:08ca9b208045 45 }
solcager 1:08ca9b208045 46
solcager 1:08ca9b208045 47 /**
solcager 1:08ca9b208045 48 * The empty operator is a shorthand notation of the <code>read()</code> method.
solcager 1:08ca9b208045 49 */
solcager 1:08ca9b208045 50 IRSensor::operator float() {
solcager 1:08ca9b208045 51
solcager 1:08ca9b208045 52 return read();
solcager 1:08ca9b208045 53 }
solcager 1:08ca9b208045 54