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3** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com>
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50
51#include "dialog.h"
52
53#include <QComboBox>
54#include <QGridLayout>
55#include <QLabel>
56#include <QLineEdit>
57#include <QPushButton>
58#include <QSerialPortInfo>
59#include <QSpinBox>
60
61Dialog::Dialog(QWidget *parent) :
62 QDialog(parent),
63 m_serialPortLabel(new QLabel(tr(s: "Serial port:"))),
64 m_serialPortComboBox(new QComboBox),
65 m_waitRequestLabel(new QLabel(tr(s: "Wait request, msec:"))),
66 m_waitRequestSpinBox(new QSpinBox),
67 m_responseLabel(new QLabel(tr(s: "Response:"))),
68 m_responseLineEdit(new QLineEdit(tr(s: "Hello, I'm Slave."))),
69 m_trafficLabel(new QLabel(tr(s: "No traffic."))),
70 m_statusLabel(new QLabel(tr(s: "Status: Not running."))),
71 m_runButton(new QPushButton(tr(s: "Start")))
72{
73 m_waitRequestSpinBox->setRange(min: 0, max: 10000);
74 m_waitRequestSpinBox->setValue(20);
75
76 const auto infos = QSerialPortInfo::availablePorts();
77 for (const QSerialPortInfo &info : infos)
78 m_serialPortComboBox->addItem(atext: info.portName());
79
80 auto mainLayout = new QGridLayout;
81 mainLayout->addWidget(m_serialPortLabel, row: 0, column: 0);
82 mainLayout->addWidget(m_serialPortComboBox, row: 0, column: 1);
83 mainLayout->addWidget(m_waitRequestLabel, row: 1, column: 0);
84 mainLayout->addWidget(m_waitRequestSpinBox, row: 1, column: 1);
85 mainLayout->addWidget(m_runButton, row: 0, column: 2, rowSpan: 2, columnSpan: 1);
86 mainLayout->addWidget(m_responseLabel, row: 2, column: 0);
87 mainLayout->addWidget(m_responseLineEdit, row: 2, column: 1, rowSpan: 1, columnSpan: 3);
88 mainLayout->addWidget(m_trafficLabel, row: 3, column: 0, rowSpan: 1, columnSpan: 4);
89 mainLayout->addWidget(m_statusLabel, row: 4, column: 0, rowSpan: 1, columnSpan: 5);
90 setLayout(mainLayout);
91
92 setWindowTitle(tr(s: "Slave"));
93 m_serialPortComboBox->setFocus();
94
95 m_timer.setSingleShot(true);
96
97 connect(sender: m_runButton, signal: &QPushButton::clicked, receiver: this, slot: &Dialog::startSlave);
98 connect(sender: &m_serial, signal: &QSerialPort::readyRead, receiver: this, slot: &Dialog::readRequest);
99 connect(sender: &m_timer, signal: &QTimer::timeout, receiver: this, slot: &Dialog::processTimeout);
100
101 connect(sender: m_serialPortComboBox, signal: QOverload<int>::of(ptr: &QComboBox::currentIndexChanged),
102 receiver: this, slot: &Dialog::activateRunButton);
103 connect(sender: m_waitRequestSpinBox, signal: QOverload<int>::of(ptr: &QSpinBox::valueChanged),
104 receiver: this, slot: &Dialog::activateRunButton);
105 connect(sender: m_responseLineEdit, signal: &QLineEdit::textChanged, receiver: this, slot: &Dialog::activateRunButton);
106}
107
108void Dialog::startSlave()
109{
110 if (m_serial.portName() != m_serialPortComboBox->currentText()) {
111 m_serial.close();
112 m_serial.setPortName(m_serialPortComboBox->currentText());
113
114 if (!m_serial.open(mode: QIODevice::ReadWrite)) {
115 processError(s: tr(s: "Can't open %1, error code %2")
116 .arg(a: m_serial.portName()).arg(a: m_serial.error()));
117 return;
118 }
119 }
120
121 m_runButton->setEnabled(false);
122 m_statusLabel->setText(tr(s: "Status: Running, connected to port %1.")
123 .arg(a: m_serialPortComboBox->currentText()));
124}
125
126void Dialog::readRequest()
127{
128 if (!m_timer.isActive())
129 m_timer.start(msec: m_waitRequestSpinBox->value());
130 m_request.append(a: m_serial.readAll());
131}
132
133void Dialog::processTimeout()
134{
135 m_serial.write(data: m_responseLineEdit->text().toUtf8());
136
137 m_trafficLabel->setText(tr(s: "Traffic, transaction #%1:"
138 "\n\r-request: %2"
139 "\n\r-response: %3")
140 .arg(a: ++m_transactionCount).arg(a: QString::fromUtf8(str: m_request))
141 .arg(a: m_responseLineEdit->text()));
142 m_request.clear();
143}
144
145void Dialog::activateRunButton()
146{
147 m_runButton->setEnabled(true);
148}
149
150void Dialog::processError(const QString &s)
151{
152 activateRunButton();
153 m_statusLabel->setText(tr(s: "Status: Not running, %1.").arg(a: s));
154 m_trafficLabel->setText(tr(s: "No traffic."));
155}
156

source code of qtserialport/examples/serialport/slave/dialog.cpp