take over some code from mainwindow

DownloadDCFirmware/update.cpp

@@ -24,6 +24,8 @@
 #include <QMap>
 #include <QStringList>
 #include <QString>
+#include <QSerialPort>
+#include <QSerialPortInfo>
 
 #define UPDATE_OPKG                 (1)
 #define UPDATE_DC                   (0)
@@ -147,6 +149,35 @@ Update::~Update() {
     unloadDCPlugin();
 }
 
+bool Update::openSerialPort() {
+   // const SettingsDialog::Settings p = m_settings->settings();
+   m_serial->setPortName(SERIAL_PORT);
+   m_serial->setBaudRate(QSerialPort::Baud115200);
+   m_serial->setDataBits(QSerialPort::DataBits::Data8);
+   m_serial->setParity(QSerialPort::Parity::NoParity);
+   m_serial->setStopBits(QSerialPort::StopBits::OneStop);
+   m_serial->setFlowControl(QSerialPort::FlowControl::NoFlowControl);
+   if (m_serial->open(QIODevice::ReadWrite)) {
+       //showStatusMessage(tr("Connected to %1 : %2, %3, %4, %5, %6")
+       //                  .arg(p.name, p.stringBaudRate, p.stringDataBits,
+       //                       p.stringParity, p.stringStopBits, p.stringFlowControl));
+       return true;
+   } else {
+       //QMessageBox::critical(this, tr("Error"), m_serial->errorString());
+       //showStatusMessage(tr("Open error"));
+   }
+   return false;
+}
+
+bool Update::closeSerialPort() {
+    if (m_serial->isOpen()) {
+        m_serial->close();
+        return true;
+    }
+    return false;
+    //showStatusMessage(tr("Disconnected"));
+}
+
 Update::DownloadResult Update::sendStatus(int ret) const {
     switch (ret) {                  // return values of dc are:
     case 0:                         // 0: no answer by now

DownloadDCFirmware/update.h

@@ -21,6 +21,7 @@
 #define SERIAL_PORT "ttyUSB0"
 #endif
 
+class QSerialPort;
 class Update : public QObject {
     Q_OBJECT
 
@@ -46,6 +47,12 @@ class Update : public QObject {
         return QStringLiteral("+%1s").arg(secs, 7, 'f', 2, QChar('0'));
     }
 
+
+    bool openSerialPort();
+    bool closeSerialPort();
+
+    QSerialPort *m_serial;
+
 public:
     enum class DownloadResult {OK, ERROR, TIMEOUT, NOP};
     enum class FileTypeJson {CONFIG=1, DEVICE=2, CASH=3, SERIAL=4, TIME=5, PRINTER=6};