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sdrangel/devices/metis/devicemetisscan.cpp
2020-11-14 22:08:06 +01:00

147 lines
5.1 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2020 Edouard Griffiths, F4EXB //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QEventLoop>
#include <QTimer>
#include "devicemetisscan.h"
void DeviceMetisScan::scan()
{
m_scans.clear();
if (m_udpSocket.bind(QHostAddress::AnyIPv4, 10001, QUdpSocket::ShareAddress))
{
connect(&m_udpSocket, SIGNAL(readyRead()), this, SLOT(readyRead()));
}
else
{
qDebug() << "DeviceMetisScan::scan: cannot bind socket";
return;
}
unsigned char buffer[63];
buffer[0] = (unsigned char) 0xEF;
buffer[1] = (unsigned char) 0XFE;
buffer[2] = (unsigned char) 0x02;
std::fill(&buffer[3], &buffer[63], 0);
if (m_udpSocket.writeDatagram((const char*) buffer, sizeof(buffer), QHostAddress::Broadcast, 1024) < 0)
{
qDebug() << "DeviceMetisScan::scan: discovery writeDatagram failed " << m_udpSocket.errorString();
return;
}
else
{
qDebug() << "DeviceMetisScan::scan: discovery writeDatagram sent";
}
// wait for 1 second before returning
QEventLoop loop;
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), &loop, SLOT(quit()));
timer->start(500);
qDebug() << "DeviceMetisScan::scan: start 0.5 second timeout loop";
// Execute the event loop here and wait for the timeout to trigger
// which in turn will trigger event loop quit.
loop.exec();
disconnect(&m_udpSocket, SIGNAL(readyRead()), this, SLOT(readyRead()));
m_udpSocket.close();
}
void DeviceMetisScan::enumOriginDevices(const QString& hardwareId, PluginInterface::OriginDevices& originDevices)
{
scan();
for (int i = 0; i < m_scans.size(); i++)
{
const DeviceScan& deviceInfo = m_scans.at(i);
QString serial = QString("%1:%2_%3").arg(deviceInfo.m_address.toString()).arg(deviceInfo.m_port).arg(deviceInfo.m_serial);
QString displayableName(QString("Metis[%1] %2").arg(i).arg(serial));
originDevices.append(PluginInterface::OriginDevice(
displayableName,
hardwareId,
serial,
i, // sequence
8, // Nb Rx
1 // Nb Tx
));
}
}
const DeviceMetisScan::DeviceScan* DeviceMetisScan::getDeviceAt(int index) const
{
if (index < m_scans.size()) {
return &m_scans.at(index);
} else {
return nullptr;
}
}
void DeviceMetisScan::getSerials(QList<QString>& serials) const
{
for (int i = 0; i < m_scans.size(); i++) {
serials.append(m_scans.at(i).m_serial);
}
}
void DeviceMetisScan::readyRead()
{
QHostAddress metisAddress;
quint16 metisPort;
unsigned char buffer[1024];
if (m_udpSocket.readDatagram((char*) &buffer, (qint64) sizeof(buffer), &metisAddress, &metisPort) < 0)
{
qDebug() << "DeviceMetisScan::readyRead: readDatagram failed " << m_udpSocket.errorString();
return;
}
QString metisIP = QString("%1:%2").arg(metisAddress.toString()).arg(metisPort);
if (buffer[0] == 0xEF && buffer[1] == 0xFE)
{
switch(buffer[2])
{
case 3: // reply
// should not happen on this port
break;
case 2: // response to a discovery packet
{
QByteArray array((char *) &buffer[3], 6);
QString serial = QString(array.toHex());
m_scans.append(DeviceScan(
serial,
metisAddress,
metisPort
));
m_serialMap.insert(serial, &m_scans.back());
qDebug() << "DeviceMetisScan::readyRead: found Metis at:" << metisIP << "MAC:" << serial;
}
break;
case 1: // a data packet
break;
}
}
else
{
qDebug() << "DeviceMetisScan::readyRead: received invalid response to discovery";
}
}