Basic Implementation of Radio Server/Client
Client written in QT and communicates to SDR server over TCP sockets. Currently getting and setting frequencies is supported
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86b0d07829
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73
.gitignore
vendored
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.gitignore
vendored
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# This file is used to ignore files which are generated
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# ----------------------------------------------------------------------------
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*~
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*.autosave
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*.a
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*.core
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*.moc
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*.o
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*.obj
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*.orig
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*.rej
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*.so
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*.so.*
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*_pch.h.cpp
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*_resource.rc
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*.qm
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.#*
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*.*#
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core
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!core/
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tags
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.DS_Store
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.directory
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*.debug
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Makefile*
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*.prl
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*.app
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moc_*.cpp
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ui_*.h
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qrc_*.cpp
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Thumbs.db
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*.res
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*.rc
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/.qmake.cache
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/.qmake.stash
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# qtcreator generated files
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*.pro.user*
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# xemacs temporary files
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*.flc
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# Vim temporary files
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.*.swp
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# Visual Studio generated files
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*.ib_pdb_index
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*.idb
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*.ilk
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*.pdb
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*.sln
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*.suo
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*.vcproj
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*vcproj.*.*.user
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*.ncb
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*.sdf
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*.opensdf
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*.vcxproj
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*vcxproj.*
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# MinGW generated files
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*.Debug
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*.Release
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# Python byte code
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*.pyc
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# Binaries
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# --------
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*.dll
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*.exe
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15
CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.1)
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project(RadioTuner LANGUAGES CXX)
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set(CMAKE_INCLUDE_CURRENT_DIR ON)
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set(CMAKE_AUTOMOC ON)
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set(CMAKE_AUTORCC ON)
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set(CMAKE_CXX_STANDARD 11)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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find_package(Qt5 COMPONENTS Core Quick REQUIRED)
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add_executable(${PROJECT_NAME} "main.cpp" "qml.qrc" "client.cpp")
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target_compile_definitions(${PROJECT_NAME} PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:QT_QML_DEBUG>)
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target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Core Qt5::Quick)
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42
client.cpp
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42
client.cpp
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#include "client.h"
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#include <QString>
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#include <QTcpSocket>
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#include <iostream>
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Client::Client(QObject *parent) : QObject(parent) {
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socket = new QTcpSocket(nullptr);
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socket->connectToHost("localhost", 65432);
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socket->waitForConnected();
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std::cout << "Connected" << std::endl;
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}
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Client::~Client() {
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socket->close();
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}
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void Client::send(QString data) {
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std::cout << "SENDING MESSAGE: \"" << data.toStdString() << "\"" << std::endl;
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QByteArray dataStream = data.toUtf8();
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socket->write(dataStream);
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}
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QString Client::recv(void) {
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socket->waitForReadyRead(1000);
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QByteArray data = socket->readAll();
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QString msg = QString(data);
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std::cout << "RECEIVED MESSAGE SO FAR: \"" << msg.toStdString() << "\"" << std::endl;
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return msg;
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}
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void Client::setFrequency(double freq) {
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QString msg = QString(":FREQ=");
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msg.push_back(QString::number(freq));
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msg.push_back(";");
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this->send(msg);
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}
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double Client::getFrequency(void) {
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this->send(QString("?FREQ;"));
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return this->recv().toDouble();
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}
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20
client.h
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client.h
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#ifndef CLIENT_H
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#define CLIENT_H
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#include <QObject>
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#include <QTcpSocket>
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class Client : public QObject {
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Q_OBJECT
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public:
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explicit Client(QObject *parent = nullptr);
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~Client();
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void send(QString data);
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QString recv(void);
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Q_INVOKABLE void setFrequency(double freq);
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Q_INVOKABLE double getFrequency(void);
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private:
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QTcpSocket *socket = nullptr;
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};
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#endif // CLIENT_H
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27
main.cpp
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main.cpp
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#include <QGuiApplication>
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#include <QQmlApplicationEngine>
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#include <QQmlContext>
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#include "client.h"
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int main(int argc, char *argv[])
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{
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QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QGuiApplication app(argc, argv);
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// qmlRegisterType<Client>("io.qt.client", 1, 0, "Client");
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QQmlApplicationEngine engine;
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const QUrl url(QStringLiteral("qrc:/main.qml"));
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QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
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&app, [url](QObject *obj, const QUrl &objUrl) {
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if (!obj && url == objUrl)
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QCoreApplication::exit(-1);
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}, Qt::QueuedConnection);
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Client *client = new Client();
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engine.rootContext()->setContextProperty("client", client);
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engine.load(url);
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return app.exec();
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}
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59
main.qml
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main.qml
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import QtQuick 2.12
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import QtQuick.Window 2.12
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import QtQuick.Controls 2.3
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Window {
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visible: true
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width: 640
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height: 480
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property alias freqText: freqText
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property alias dial: dial
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title: qsTr("Radio Tuner")
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property var initialFreq : {
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return client.getFrequency() / 100000;
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}
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Dial {
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id: dial
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x: 74
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y: 248
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font.pointSize: 10
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stepSize: 1
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to: 1080
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from: 875
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value: initialFreq
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}
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Text {
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id: title
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x: 38
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y: 37
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text: qsTr("Radio Tuner")
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font.pixelSize: 32
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}
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Text {
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id: freqText
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x: 108
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y: 197
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text: {
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var dialNumber = initialFreq / 10;
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var dialString = (dialNumber < 100) ? dialNumber.toString().substring(0, 4) : dialNumber.toString().substring(0, 5)
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return "Tuned To: " + dialString
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}
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font.pixelSize: 24
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}
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Connections {
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target: dial
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onMoved: {
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var dialNumber = (dial.value / 10)
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var dialString = (dialNumber < 100) ? dialNumber.toString().substring(0, 4) : dialNumber.toString().substring(0, 5)
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freqText.text = qsTr("Tuned To: " + dialString)
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dialNumber = parseFloat(dialString)
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console.log("The radio then dials to: " + dialNumber + "MHz")
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client.setFrequency((dialNumber * 1000000))
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}
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}
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}
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5
qml.qrc
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qml.qrc
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<RCC>
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<qresource prefix="/">
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<file>main.qml</file>
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</qresource>
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</RCC>
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139
tuner.py
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139
tuner.py
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#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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##################################################
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# GNU Radio Python Flow Graph
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# Title: Top Block
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# Generated: Sun May 12 22:10:45 2019
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##################################################
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from gnuradio import analog
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from gnuradio import audio
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from gnuradio import blocks
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from gnuradio import eng_notation
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from gnuradio import filter
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from gnuradio import gr
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from gnuradio.eng_option import eng_option
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from gnuradio.filter import firdes
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from optparse import OptionParser
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import osmosdr
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import time
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import socket
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import re
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class top_block(gr.top_block):
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def __init__(self):
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gr.top_block.__init__(self, "Top Block")
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##################################################
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# Variables
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##################################################
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self.samp_rate = samp_rate = 1536000
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self.frequency = frequency = 96900000
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##################################################
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# Blocks
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##################################################
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self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + '' )
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self.rtlsdr_source_0.set_sample_rate(samp_rate)
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self.rtlsdr_source_0.set_center_freq(frequency, 0)
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self.rtlsdr_source_0.set_freq_corr(0, 0)
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self.rtlsdr_source_0.set_dc_offset_mode(2, 0)
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self.rtlsdr_source_0.set_iq_balance_mode(2, 0)
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self.rtlsdr_source_0.set_gain_mode(True, 0)
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self.rtlsdr_source_0.set_gain(0, 0)
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self.rtlsdr_source_0.set_if_gain(0, 0)
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self.rtlsdr_source_0.set_bb_gain(0, 0)
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self.rtlsdr_source_0.set_antenna('', 0)
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self.rtlsdr_source_0.set_bandwidth(0, 0)
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self.low_pass_filter_0 = filter.fir_filter_ccf(4, firdes.low_pass(
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1, samp_rate, 500000, 60000, firdes.WIN_KAISER, 6.76))
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self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
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self.audio_sink_0 = audio.sink(48000, 'pulse', True)
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self.analog_wfm_rcv_0 = analog.wfm_rcv(
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quad_rate=384000,
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audio_decimation=8,
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)
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##################################################
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# Connections
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##################################################
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self.connect((self.analog_wfm_rcv_0, 0), (self.audio_sink_0, 0))
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self.connect((self.blocks_throttle_0, 0), (self.low_pass_filter_0, 0))
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self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
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self.connect((self.rtlsdr_source_0, 0), (self.blocks_throttle_0, 0))
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def get_samp_rate(self):
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return self.samp_rate
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def set_samp_rate(self, samp_rate):
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self.samp_rate = samp_rate
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self.rtlsdr_source_0.set_sample_rate(self.samp_rate)
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self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, 500000, 60000, firdes.WIN_KAISER, 6.76))
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self.blocks_throttle_0.set_sample_rate(self.samp_rate)
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def get_frequency(self):
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return self.frequency
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def set_frequency(self, frequency):
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self.frequency = frequency
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self.rtlsdr_source_0.set_center_freq(self.frequency, 0)
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def main(top_block_cls=top_block, options=None):
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tb = top_block_cls()
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tb.start()
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HOST = '127.0.0.1' # Loopback Address (Localhost)
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PORT = 65432 # Semi-Random Port that is non-priviledged (> 1023)
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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# Avoid bind() exception: OSError: [Errno 48] Address already in use
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind((HOST, PORT))
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quit = False
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while not quit:
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s.listen(1) # Number of unaccepted connections before it rejects new ones
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conn, addr = s.accept()
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print("Connected by ", addr)
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while not quit:
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data = conn.recv(1024) # Not sure about the bytes argument...
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data = data.strip() # Removes \r\n
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print("DATA: ", data)
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commands = re.split(";", data)
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if data == "":
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break
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for command in commands:
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if command == "":
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continue
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elif command[0] == '?':
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# Query Section
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if command[1:] == "VER":
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conn.sendall("Version 0.1\n")
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elif command[1:] == "FREQ":
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conn.sendall(str(tb.get_frequency()) + '\n')
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else:
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print("UNKNOWN COMMAND: ", command)
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elif command[0] == ':':
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# Setter Section
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if command[1:5] == "FREQ":
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print("FREQUENCY SET")
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frequency = float(command[6:])
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if frequency >= 87500000 and frequency <= 108000000:
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tb.set_frequency(frequency)
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else:
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print("ERROR: Invalid Frequency ", frequency)
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elif command[1:] == "QUIT":
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print("QUITTING")
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quit = True
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else:
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print("UNKNOWN COMMAND: ", command)
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else:
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print("UNKNOWN COMMAND", command)
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conn.close()
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s.close()
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if __name__ == '__main__':
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main()
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