save for christmas

DownloadDCFirmware/DownloadDCFirmware.pro

@@ -80,7 +80,6 @@ SOURCES += \
         mainwindow.cpp \
         ../common/src/message_handler.cpp \
         ../UpdatePTUDevCtrl/commandline_parser.cpp \
-        ../UpdatePTUDevCtrl/process/command.cpp \
         update.cpp \
         dc_download.cpp \
         ../common/src/System.cpp
@@ -90,7 +89,6 @@ HEADERS += \
         mainwindow.h \
         ../common/include/message_handler.h \
         ../UpdatePTUDevCtrl/commandline_parser.h \
-        ../UpdatePTUDevCtrl/process/command.h \
         update.h \
         dc_download.h \
         ../common/include/System.h

DownloadDCFirmware/main.cpp

@@ -52,7 +52,7 @@ int main(int argc, char **argv) {
     }
     // qputenv("XDG_RUNTIME_DIR", "/var/run/user/0");
 
-    openlog("ATB-UPDATE-DC-FIRMWARE", LOG_PERROR | LOG_PID | LOG_CONS, LOG_USER);
+    openlog("DC", LOG_PERROR | LOG_CONS, LOG_USER);
 
     QApplication a(argc, argv);
     QApplication::setApplicationName("ATBDownloadDCFirmware");
@@ -73,7 +73,7 @@ int main(int argc, char **argv) {
     QString workingDir = parser.workingDir();
     QString psaConfigDir = parser.psaConfigDir();
     QString psaTariffDir = parser.psaTariffDir();
-    QString dcDir = parser.dcDir();
+    QString psaDcDir = parser.dcDir();
     QString iniFileName = parser.iniFileName();
     bool const dryRun = parser.dryRun();
     bool const noUpdatePsaHardware = parser.noUpdatePsaHardware();
@@ -112,13 +112,12 @@ int main(int argc, char **argv) {
     qInfo() << "customerNr ..............." << customerNr;
     qInfo() << "zoneNr ..................." << zoneNr;
     qInfo() << "readDCVersion ............" << readDCVersion;
-    qInfo() << "dcDir ...................." << dcDir;
+    qInfo() << "dcDir ...................." << psaDcDir;
 
-    if (readDCVersion) {
+    if (!QDir(plugInDir).exists()) {
-        qInfo() << "dc-version ..............." << Update::dcVersion(
+        qCritical() << plugInDir
-                    QDir::cleanPath(rtPath + QDir::separator()
+                    << "does not exists, but has to contain dc-library";
-                                  + QString("customer_%1").arg(customerNr) + QDir::separator()
+        exit(-1);
-                                  + dcDir + QDir::separator() + "dc2c.bin"));
     }
 
     if (showExtendedVersion) {
@@ -126,12 +125,47 @@ int main(int argc, char **argv) {
         return 0;
     }
 
+    QString const &customerRepo
+        = QDir::cleanPath(workingDir + QDir::separator() + QString("customer_%1").arg(customerNr));
 
-    // QString const &customerRepo = QDir::cleanPath(workingDir + QDir::separator() + QString("customer_%1").arg(customerNr));
+    // etc/dc: located under mount-path
-    // QStringList filesToUpdate;
+    std::optional<QString> mountPath = System::checkForUSBStick(psaDcDir);
+    QFileInfo fi;
+    if (mountPath.has_value()) {
+        fi.setFile(mountPath.value(), System::getDCFileOnUsbStick(mountPath.value()));
+    } else
+    if ((mountPath = System::checkForSDCard(psaDcDir)).has_value()) {
+        fi.setFile(mountPath.value(), System::getDCFileOnSDCard(mountPath.value()));
+    } else {
+        qInfo() << "using customer repository" << customerRepo;
+
+        QDir dir(QDir::cleanPath(customerRepo + QDir::separator() + "etc/dc"));
+        if (dir.exists()) {
+            fi.setFile(dir, dir.absoluteFilePath("dc2c.bin"));
+        } else {
+            qCritical() << "DIRECTORY" << dir << "DOES NOT EXIST";
+            return -1;
+        }
+    }
+
+    qInfo() << "downloading dc-firmware .." << fi.absoluteFilePath();
+    qInfo() << "dc-firmware size (bytes) ." << fi.size();
+    if (readDCVersion) {
+        qInfo() << "dc-version ..............." << Update::dcVersion(fi.absoluteFilePath());
+    }
 
     QThread::currentThread()->setObjectName("main thread");
-    qInfo() << "Main thread" << QThread::currentThreadId();
+    // qInfo() << "Main thread" << QThread::currentThreadId();
+
+    Update update(customerRepo,
+                  QString::number(customerNr),
+                  branchName,
+                  plugInDir,
+                  plugInName,
+                  workingDir,
+                  psaDcDir);
+
+    update.doUpdate(fi.absoluteFilePath());
 
     // MainWindow mw;
 
@@ -142,6 +176,8 @@ int main(int argc, char **argv) {
 
     // mw.show();
 
+    qInfo() << "<DC-UPDATE-FINISH>";
+
     return 0;
     // return a.exec();
 }

DownloadDCFirmware/update.cpp

@@ -96,17 +96,14 @@ bool Update::unloadDCPlugin() {
 }
 
 QString Update::dcVersion(QString const &dcBinFile) {
-    Command c("bash");
+    QProcess p;
-    QStringList param;
+    QStringList params;
 
-    param << "-c" << QString(R"(strings %1 | grep DC2c.\[0-9\] | uniq)").arg(dcBinFile);
+    params << "-c" << QString(R"(strings %1 | grep DC2c.\[0-9\] | uniq)").arg(dcBinFile);
 
-    if (c.execute("/tmp", param)) {
+    p.start("bash", params);
-        return c.getCommandResult().trimmed().split(QRegularExpression("\\s")).first();
+    p.waitForFinished();
-        // qInfo() << "(" << __func__ << ":" << __LINE__ << ")" << v;
+    return QString(p.readAllStandardOutput()).trimmed().split(QRegularExpression("\\s")).first();
-    }
-
-    return "";
 }
 
 class hwapi;
@@ -116,11 +113,14 @@ Update::Update(QString customerRepository,
                QString plugInDir,
                QString pluginName,
                QString workingDir,
+               QString psaDcDir,
                bool dryRun,
                QObject *parent,
                char const *serialInterface,
                char const *baudrate)
-    : QObject(parent)
+    : QObject(parent) {
+#if 0
+
     , m_hw(loadDCPlugin(QDir(plugInDir), pluginName))
     , m_serialInterface(serialInterface)
     , m_baudrate(baudrate)
@@ -129,6 +129,7 @@ Update::Update(QString customerRepository,
     , m_branchName(branchName)
     , m_pluginName(pluginName)
     , m_workingDir(workingDir)
+    , m_psaDcDir(psaDcDir)
     , m_dryRun(dryRun)
     , m_sys_areDCdataValid(false) {
 
@@ -138,6 +139,8 @@ Update::Update(QString customerRepository,
 
         // carun stoppen
     }
+#endif
+    m_start = QDateTime::currentDateTime();
 }
 
 Update::~Update() {
@@ -163,9 +166,16 @@ Update::sendNextAddress(int bNum) const {
     if ( bNum==0 || bNum==1024 || bNum==2048 || bNum==3072 || bNum==4096 ) {
         // qDebug() << "addr-block" << bNum << "...";
         while (noAnswerCount <= 250) {
-            m_hw->bl_sendAddress(bNum);
+            // TODO
+            // m_hw->bl_sendAddress(bNum);
+
             QThread::msleep(100);
-            DownloadResult const res = sendStatus(m_hw->bl_wasSendingAddOK());
+
+            // TODO
+            // DownloadResult const res = sendStatus(m_hw->bl_wasSendingAddOK());
+
+            DownloadResult const res = DownloadResult::OK;
+
             if (res != DownloadResult::NOP) {
                 if (res == DownloadResult::ERROR) {
                     if (++errorCount >= 10) {
@@ -173,7 +183,7 @@ Update::sendNextAddress(int bNum) const {
                         return res;
                     }
                 } else { // res == DownloadResult::OK
-                    qCritical() << "addr-block" << bNum << "...OK";
+                    qInfo() << nextTimePoint().toUtf8().constData() << "addr-block" << bNum << "...done";
                     return res;
                 }
             } else {
@@ -197,13 +207,28 @@ Update::sendNextDataBlock(QByteArray const &binary, int bNum) const {
     memcpy(local, binary.constData() + bAddr, 64);
     local[64] = local[65] = 0x00;
 
+    QString s = nextTimePoint();
+    s += " sending block ";
+    s += QString("%1/%2 ...done <PROGRESS>").arg(bNum).arg(m_totalBlocks);
+    s += QString::number(ceil(((bNum * 100.0) / (double)m_totalBlocks)));
+
+    qInfo() << s.toUtf8().constData();
+
+    QThread::msleep(200);
+    return DownloadResult::OK;
+
     // QByteArray b((const char *)(&local[0]), 64);
     // qCritical() << "SNDB" << bNum << b.size() << b.toHex();
 
     while (noAnswerCount <= 250) {
-        m_hw->bl_sendDataBlock(64, local);
+        // TODO
-        QThread::msleep(10);
+        // m_hw->bl_sendDataBlock(64, local);
-        DownloadResult const res = sendStatus(m_hw->bl_wasSendingDataOK());
+
+        // TODO
+        // DownloadResult const res = sendStatus(m_hw->bl_wasSendingDataOK());
+
+        DownloadResult const res = DownloadResult::OK;
+
         if (res != DownloadResult::NOP) {
             if (res == DownloadResult::ERROR) {
                 if (++errorCount >= 10) {
@@ -211,7 +236,8 @@ Update::sendNextDataBlock(QByteArray const &binary, int bNum) const {
                     return res;
                 }
             } else {
-                qCritical() << "data for block" << bNum << "OK";
+                qInfo() << nextTimePoint().toUtf8().constData() << "data for block"
+                        << QString("%1/%2").arg(bNum).arg(m_totalBlocks) << "done";
                 return res;
             }
         } else {
@@ -223,7 +249,11 @@ Update::sendNextDataBlock(QByteArray const &binary, int bNum) const {
 }
 
 bool Update::startBootloader() const {
-    qDebug() << "starting bootloader...";
+    QThread::msleep(1000);
+    qInfo() << nextTimePoint().toUtf8().constData() << "starting bootloader ...done";
+    return true;
+
+#if 0
     int nTry = 5;
     while (--nTry >= 0) {
         m_hw->bl_startBL();
@@ -239,9 +269,15 @@ bool Update::startBootloader() const {
     }
     qCritical() << "starting bootloader...FAILED";
     return false;
+#endif
 }
 
 bool Update::stopBootloader() const {
+    QThread::msleep(1000);
+    qInfo() << nextTimePoint().toUtf8().constData() << "stopping bootloader ...done";
+    return true;
+
+#if 0
     qDebug() << "stopping bootloader...";
     int nTry = 5;
     while (--nTry >= 0) {
@@ -254,21 +290,24 @@ bool Update::stopBootloader() const {
     }
     qCritical() << "stopping bootloader...FAILED";
     return false;
+#endif
 }
 
 bool Update::resetDeviceController() const {
-    qDebug() << "resetting device controller...";
+    // TODO
-    m_hw->bl_rebootDC();
+    // m_hw->bl_rebootDC();
+
     // wait maximally 3 seconds, before starting bootloader
     QThread::sleep(1);
-    qInfo() << "resetting device controller...OK";
+
+    qInfo() << nextTimePoint().toUtf8().constData()
+            << "resetting device controller ...done";
+
     return true;
 }
 
 
 QByteArray Update::loadBinaryDCFile(QString const &filename) const {
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ")"
-                << "loading dc binary" << filename << "...";
 
     QFile file(filename); // closed in destructor call
     if (!file.exists()) {
@@ -281,8 +320,9 @@ QByteArray Update::loadBinaryDCFile(QString const &filename) const {
                     << "cannot open file" << file.fileName();
         return QByteArray();
     }
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ")"
+
-                << "loading dc binary" << filename << "...OK";
+    qInfo() << nextTimePoint().toUtf8().constData()
+            << "loading dc binary to memory" << Update::dcVersion(filename) << "...done";
 
     return file.readAll();
 }
@@ -368,42 +408,46 @@ QByteArray Update::loadBinaryDCFile(QString const &filename) const {
                         // There is no problem to repeat this command until the
                         // bootloader is really not running anymore.
  */
-bool Update::doUpdate() {
+bool Update::doUpdate(QString const &dcFileName) {
+    qInfo() << "<DC-VERSION>" << Update::dcVersion(dcFileName);
+
+    m_dcFileName = dcFileName;
+
     //QString const &fToWorkOn = usbStickDetected ? QDir::cleanPath(it->trimmed())
     //: QDir::cleanPath(m_customerRepository + QDir::separator() + it->trimmed());
 
-    if (!m_hw) {
+    //if (!m_hw) {
-        qCritical() << "(" << __func__ << ":" << __LINE__ << "):"
+    //    qCritical() << "(" << __func__ << ":" << __LINE__ << "):"
-                    << "ERROR!!! m_hw == nullptr";
+    //                << "ERROR!!! m_hw == nullptr";
-        return false;
+    //    return false;
-    }
+    //}
 
-    QByteArray ba = loadBinaryDCFile(m_hw->dcDownloadFileName());
+    QByteArray ba = loadBinaryDCFile(m_dcFileName);
     if (ba.size() > 0) {
-        uint16_t const totalBlocks = (((ba.size())%64)==0) ? (ba.size()/64) : (ba.size()/64)+1;
+        m_totalBlocks = (((ba.size())%64)==0) ? (ba.size()/64) : (ba.size()/64)+1;
-        m_hw->dcDownloadSetTotalBlockNumber(totalBlocks);
+
+        qInfo() << nextTimePoint().toUtf8().constData() << "blocks to send" << m_totalBlocks;
 
         // fill last block of data to be sent with 0xFF
-        ba = ba.leftJustified(totalBlocks*64, (char)(0xFF));
+        ba = ba.leftJustified(m_totalBlocks*64, (char)(0xFF));
 
         resetDeviceController();
         if (startBootloader()) {
-
-            qCritical() << "DownloadThread::run(): TOTAL NUMBER OF BYTES TO SEND TO DC" << ba.size();
-            qCritical() << "DownloadThread::run(): TOTAL NUMBER OF BLOCKS" << totalBlocks;
-
             int currentBlock = 0;
             DownloadResult res = DownloadResult::OK;
-            qCritical() << "64-byte block " << currentBlock;
+            qInfo() << nextTimePoint().toUtf8().constData() << "64-byte block" << currentBlock;
-            while (res != DownloadResult::ERROR &&  currentBlock < totalBlocks) {
+
+            while (res != DownloadResult::ERROR && currentBlock < m_totalBlocks) {
                 if ((res = sendNextAddress(currentBlock)) != DownloadResult::ERROR) {
                     if ((res = sendNextDataBlock(ba, currentBlock)) != DownloadResult::ERROR) {
-                        m_hw->dcDownloadSetCurrentBlockNumber(currentBlock);
+                        // TODO
+                        // m_hw->dcDownloadSetCurrentBlockNumber(currentBlock);
                         currentBlock += 1;
-                    }
+                    } else break;
                 }
             }
 
+#if 0
             qCritical() << "DownloadThread::run(): last 64-byte block %04d" << currentBlock;
 
             int const rest = ba.size() % 64;
@@ -422,10 +466,15 @@ bool Update::doUpdate() {
                 m_hw->dcDownloadSetCurrentBlockNumber(currentBlock);
             }
             qCritical() << "DownloadThread::run(): last result" << (int)sendStatus(m_hw->bl_wasSendingDataOK());
+#endif
         }
         stopBootloader();   // there is no harm in stopping the bootloader even
+                            // if starting the bootloader failed
+        qInfo() << nextTimePoint().toUtf8().constData() << "<DC-UPDATE-SUCCESS>";
+        return true;
     }
 
+    qInfo() << nextTimePoint().toUtf8().constData() << "<DC-UPDATE-FAILURE>";
     return false;
 }
 

DownloadDCFirmware/update.h

@@ -8,6 +8,8 @@
 #include <QByteArray>
 #include <QProcess>
 #include <QPluginLoader>
+#include <QDateTime>
+#include <cmath>
 
 #include <initializer_list>
 
@@ -30,12 +32,20 @@ class Update : public QObject {
     QString m_branchName;
     QString m_pluginName;
     QString m_workingDir;
+    QString m_psaDcDir;
+    QString m_dcFileName;
     bool m_maintenanceMode;
     bool m_dryRun;
     bool m_sys_areDCdataValid;
 
     static QPluginLoader pluginLoader;
 
+    QDateTime m_start;
+    QString nextTimePoint() const {
+        float const secs = m_start.msecsTo(QDateTime::currentDateTime()) / 1000.0;
+        return QStringLiteral("+%1s").arg(secs, 7, 'f', 2, QChar('0'));
+    }
+
 public:
     enum class DownloadResult {OK, ERROR, TIMEOUT, NOP};
     enum class FileTypeJson {CONFIG=1, DEVICE=2, CASH=3, SERIAL=4, TIME=5, PRINTER=6};
@@ -44,13 +54,13 @@ public:
     static bool unloadDCPlugin();
     static QStringList split(QString line, QChar sep = ',');
 
-
     explicit Update(QString customerRepository,
                     QString customerNrStr,
                     QString branchName,
                     QString plugInDir,
                     QString pluginName,
                     QString workingDir,
+                    QString psaDcDir,
                     bool dryRun = false,
                     QObject *parent = nullptr,
                     char const *serialInterface = SERIAL_PORT,
@@ -58,7 +68,7 @@ public:
 
     virtual ~Update() override;
 
-    bool doUpdate();
+    bool doUpdate(QString const &dcFileName);
     static QString dcVersion(QString const &dcBinFile);
 
 private:
@@ -72,7 +82,7 @@ private:
     DownloadResult dcDownloadBinary(QByteArray const &b) const;
 
     QString m_fileToDownload;
-
+    uint16_t m_totalBlocks = 0;
 /*
 private:
     static QString jsonType(enum FileTypeJson type);

UpdatePTUDevCtrl/commandline_parser.cpp

@@ -324,9 +324,9 @@ bool CommandLineParser::extendedVersion() {
 bool CommandLineParser::alwaysDownloadConfig() {
     if (m_parser.isSet(m_alwaysDownloadConfigOption)) {
         m_alwaysDownloadConfig = m_parser.value(m_alwaysDownloadConfigOption);
-        qCritical() << "m_alwaysDownloadConfigOption IS SET" << m_alwaysDownloadConfig;
+        // qCritical() << "m_alwaysDownloadConfigOption IS SET" << m_alwaysDownloadConfig;
     }
-    qCritical() << "m_alwaysDownloadConfig" << m_alwaysDownloadConfig;
+    // qCritical() << "m_alwaysDownloadConfig" << m_alwaysDownloadConfig;
     return m_alwaysDownloadConfig == "false" ? false : true;
 }
 

UpdatePTUDevCtrl/git/git_client.cpp

@@ -2,6 +2,7 @@
 #include "update.h"
 #include "worker.h"
 #include "utils.h"
+#include "process/command.h"
 
 #include <QRegularExpression>
 #include <QDebug>

UpdatePTUDevCtrl/git/git_client.h

@@ -4,8 +4,8 @@
 #include <QObject>
 #include <QStringList>
 #include <optional>
+#include <QCoreApplication>
 
-#include "process/command.h"
 #include "ismas/ismas_client.h"
 
 class Worker;

UpdatePTUDevCtrl/main.cpp

@@ -31,6 +31,7 @@
 #include "worker.h"
 #include "mainwindow.h"
 #include "utils.h"
+// #include "process/command.h"
 
 #include <QThread>
 #include <QtWidgets>
@@ -199,5 +200,9 @@ int main(int argc, char *argv[]) {
     mw.setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
     mw.showFullScreen();
 
+    // test
+    worker.dcUpdate();
+    // worker.summary();
+
     return a.exec();
 }

UpdatePTUDevCtrl/mainwindow.cpp

@@ -11,6 +11,8 @@
 #include <QDebug>
 #include <QScrollBar>
 #include <QEvent>
+#include <QColor>
+#include <QColorDialog>
 
 
 MainWindow::MainWindow(Worker *worker, QWidget *parent)
@@ -21,16 +23,16 @@ MainWindow::MainWindow(Worker *worker, QWidget *parent)
     , m_progressRunning(false)
     , m_updateStep(UpdateDcEvent::UpdateStep::NONE) {
 
+    ui->setupUi(this);
+
     this->setStatusBar(new QStatusBar(this));
     QFont f;
     f.setStyleHint(QFont::Monospace);
     f.setWeight(QFont::Bold);
     f.setFamily("Misc Fixed");
-    f.setPixelSize(12);
+    f.setPointSize(11);
     this->statusBar()->setFont(f);
 
-    ui->setupUi(this);
-
     ui->updateProgress->setRange(0, 100);
     ui->updateProgress->reset();
 
@@ -45,8 +47,8 @@ MainWindow::MainWindow(Worker *worker, QWidget *parent)
     lst << QString("APISM version           : %1").arg(m_worker->apismVersion()).leftJustified(m_width-3);
     lst << QString("").leftJustified(m_width-3, '=');
 
-    ui->updateStatus->setText(lst.join('\n'));
+    ui->updateLabel->setText(lst.join('\n'));
-    ui->updateStatus->setEnabled(true);
+    ui->updateLabel->setEnabled(true);
     // ui->updateStatus->installEventFilter(this);
 
     m_startTimer = new QTimer(this);
@@ -78,11 +80,15 @@ MainWindow::MainWindow(Worker *worker, QWidget *parent)
     }
 
     connect(ui->exit, SIGNAL(clicked()),this,SLOT(onQuit()));
+    connect(m_worker, SIGNAL(showSummary(QString)),this,SLOT(onShowSummary(QString)));
     connect(m_worker, SIGNAL(disableExit()),this,SLOT(onDisableExit()));
+    connect(m_worker, SIGNAL(showDcDownload(QString)),this,SLOT(onShowDcDownload(QString)));
+    connect(m_worker, SIGNAL(setDcDownloadProgress(int)),this,SLOT(onSetDcDownloadProgress(int)));
     connect(m_worker, SIGNAL(enableExit()),this,SLOT(onEnableExit()));
     connect(m_worker, SIGNAL(stopStartTimer()),this,SLOT(onStopStartTimer()));
     connect(m_worker, SIGNAL(restartExitTimer()),this,SLOT(onRestartExitTimer()));
     connect(m_worker, SIGNAL(appendText(QString,QString)),this,SLOT(onAppendText(QString,QString)));
+    connect(m_worker, SIGNAL(insertText(QString)),this,SLOT(onInsertText(QString)), Qt::DirectConnection);
     connect(m_worker, SIGNAL(showErrorMessage(QString,QString)),this, SLOT(onShowErrorMessage(QString,QString)));
     connect(m_worker, SIGNAL(showStatusMessage(QString,QString)),this, SLOT(onShowStatusMessage(QString,QString)));
     connect(m_worker, SIGNAL(showErrorMessage(QStringList)),this, SLOT(onShowErrorMessage(QStringList)));
@@ -91,6 +97,29 @@ MainWindow::MainWindow(Worker *worker, QWidget *parent)
     connect(m_worker, SIGNAL(replaceLast(QStringList,QString)),this, SLOT(onReplaceLast(QStringList,QString)));
 }
 
+
+void MainWindow::onShowSummary(QString text) {
+    // QString s = ui->updateLabel->text();
+    QString s("\n");
+
+    ui->updateLabel->setText(s);
+    ui->updateLabel->hide();
+    ui->stepLabel->hide();
+
+    s += text;
+    ui->updateStatus->setText(s);
+}
+
+void MainWindow::onSetDcDownloadProgress(int v) {
+    ui->updateProgress->setValue(v);
+}
+
+void MainWindow::onShowDcDownload(QString version) {
+    m_targetDcVersion = version;
+    ui->exit->setEnabled(false);
+    ui->stepLabel->setText(QString("Device controller update. Target version: %1").arg(version).leftJustified(m_width-3));
+}
+
 MainWindow::~MainWindow() {
     delete m_startTimer;
     delete m_exitTimer;
@@ -199,6 +228,12 @@ void MainWindow::scrollDownTextEdit() {
     ui->updateStatus->ensureCursorVisible();
 }
 
+
+void MainWindow::onInsertText(QString text) {
+    scrollDownTextEdit();
+    ui->updateStatus->textCursor().insertText(text);
+}
+
 void MainWindow::onAppendText(QString text, QString suffix) {
     // Utils::printInfoMsg(QString("ON APPEND CALLED AT ")
     //    + QDateTime::currentDateTime().toString(Qt::ISODateWithMs));

UpdatePTUDevCtrl/mainwindow.h

@@ -36,8 +36,11 @@ public:
     UpdateDcEvent::UpdateStep updateStep() const { return m_updateStep; }
     void setUpdateStep(UpdateDcEvent::UpdateStep updateStep) { m_updateStep = updateStep; }
 
+    QString targetDcVersion() {return  m_targetDcVersion; }
+
 public slots:
     void onAppendText(QString, QString suffix = "");
+    void onInsertText(QString);
     void onReplaceLast(QStringList, QString suffix = "");
     void onReplaceLast(QString, QString suffix = "");
     void onShowErrorMessage(QString, QString);
@@ -48,6 +51,9 @@ public slots:
     void onRestartExitTimer();
     void onEnableExit();
     void onDisableExit();
+    void onShowDcDownload(QString);
+    void onSetDcDownloadProgress(int);
+    void onShowSummary(QString);
 #if EMERGENCY_LEAVE_BL==1
     void emergencyLeaveBL();
 #endif
@@ -74,5 +80,6 @@ private:
     //int m_progressValue;
     UpdateDcEvent::UpdateStep m_updateStep;
     QTimer *m_statusTimer;
+    QString m_targetDcVersion;
 };
 #endif // MAINWINDOW_H

UpdatePTUDevCtrl/mainwindow.ui

@@ -12,7 +12,10 @@
   </property>
   <property name="font">
    <font>
-    <family>Source Code Pro</family>
+    <family>Misc Fixed</family>
+    <pointsize>11</pointsize>
+    <weight>75</weight>
+    <bold>true</bold>
    </font>
   </property>
   <property name="windowTitle">
@@ -29,21 +32,28 @@
      </rect>
     </property>
     <layout class="QGridLayout" name="gridLayout">
-     <item row="3" column="2">
+     <item row="2" column="0" colspan="3">
-      <widget class="QPushButton" name="exit">
+      <widget class="QLabel" name="stepLabel">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>18</height>
+        </size>
+       </property>
+       <property name="font">
+        <font>
+         <family>Misc Fixed</family>
+         <pointsize>11</pointsize>
+         <weight>75</weight>
+         <bold>true</bold>
+        </font>
+       </property>
        <property name="text">
-        <string>Exit</string>
+        <string/>
        </property>
       </widget>
      </item>
-     <item row="3" column="1">
+     <item row="3" column="0" colspan="3">
-      <widget class="QProgressBar" name="updateProgress">
-       <property name="value">
-        <number>1</number>
-       </property>
-      </widget>
-     </item>
-     <item row="0" column="0" rowspan="3" colspan="3">
       <widget class="QTextEdit" name="updateStatus">
        <property name="enabled">
         <bool>true</bool>
@@ -52,9 +62,16 @@
         <font>
          <family>Misc Fixed</family>
          <pointsize>11</pointsize>
+         <weight>75</weight>
          <bold>true</bold>
         </font>
        </property>
+       <property name="focusPolicy">
+        <enum>Qt::NoFocus</enum>
+       </property>
+       <property name="frameShape">
+        <enum>QFrame::WinPanel</enum>
+       </property>
        <property name="verticalScrollBarPolicy">
         <enum>Qt::ScrollBarAsNeeded</enum>
        </property>
@@ -64,6 +81,44 @@
        <property name="sizeAdjustPolicy">
         <enum>QAbstractScrollArea::AdjustToContents</enum>
        </property>
+       <property name="undoRedoEnabled">
+        <bool>false</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0" rowspan="2" colspan="3">
+      <widget class="QLabel" name="updateLabel">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>100</height>
+        </size>
+       </property>
+       <property name="font">
+        <font>
+         <family>Misc Fixed</family>
+         <pointsize>11</pointsize>
+         <weight>75</weight>
+         <bold>true</bold>
+        </font>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item row="4" column="0" colspan="2">
+      <widget class="QProgressBar" name="updateProgress">
+       <property name="value">
+        <number>1</number>
+       </property>
+      </widget>
+     </item>
+     <item row="4" column="2">
+      <widget class="QPushButton" name="exit">
+       <property name="text">
+        <string>Exit</string>
+       </property>
       </widget>
      </item>
     </layout>

UpdatePTUDevCtrl/process/command.cpp

@@ -1,4 +1,5 @@
 #include "command.h"
+#include "worker.h"
 
 #include <QProcess>
 #include <QDebug>
@@ -7,12 +8,15 @@
 #include <QDateTime>
 #include <QMutexLocker>
 
+
 Command::Command(QString const &command, int start_timeout, int finish_timeout)
     : m_command(command.trimmed())
     , m_commandResult("")
     , m_waitForStartTimeout(start_timeout)
     , m_waitForFinishTimeout(finish_timeout)
-    , m_exitCode(-1) {
+    , m_exitCode(-1)
+    , m_p(nullptr)
+    , m_worker(nullptr) {
 }
 
 QString Command::getCommandResult(bool reset) const {
@@ -31,14 +35,53 @@ QString Command::getCommandResult(bool reset) const {
 void Command::readyReadStandardOutput() {
     QMutexLocker locker(&m_mtx);
     QProcess *p = (QProcess *)sender();
-    m_commandResult += p->readAllStandardOutput();
+    if (p) {
+        QString s = p->readAllStandardOutput();
+        if (m_worker) {
+            int i = -1;
+            if ((i = s.indexOf("<DC-VERSION>")) != -1) {
+                s = s.mid(i+12).trimmed();
+                if ((i = s.indexOf("\"")) != -1) {
+                    s = s.mid(i+1);
+                    if ((i = s.indexOf("\"")) != -1) {
+                        s = s.mid(0, i).trimmed();
+                    }
+                }
+                emit m_worker->showDcDownload(s);
+            } else
+            if ((i = s.indexOf("<PROGRESS>")) != -1) {
+                bool ok;
+                int v = s.mid(i+10).trimmed().toInt(&ok);
+                if (ok) {
+                    emit m_worker->setDcDownloadProgress(v);
+                    emit m_worker->insertText(s.mid(0,i) + "\n");
+                }
+            } else
+            if ((i = s.indexOf("<DC-UPDATE-FINISH>")) != -1) {
+                m_worker->summary();
+                // qApp->exit(0);
+            } else
+            if ((i = s.indexOf("<DC-UPDATE-SUCCESS>")) != -1) {
+                m_worker->summary();
+            } else
+            if ((i = s.indexOf("<DC-UPDATE-FAILURE>")) != -1) {
+                m_worker->summary();
+                //qApp->exit(-1);
+            } else {
+                emit m_worker->insertText(s);
+            }
+        }
+        m_commandResult += s;
+    }
 }
 
 void Command::readyReadStandardError() {
     QProcess *p = (QProcess *)sender();
+    if (p) {
         QByteArray buf = p->readAllStandardError();
         qCritical() << buf;
     }
+}
 
 void Command::finished(int /*exitCode*/, QProcess::ExitStatus /*exitStatus*/) {
     QProcess *p = (QProcess *)sender();
@@ -52,6 +95,31 @@ void Command::finished(int /*exitCode*/, QProcess::ExitStatus /*exitStatus*/) {
     disconnect(p, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(readyReadStandardError()));
 }
 
+bool Command::start(QString workingDirectory, QStringList args) {
+    if (!QDir::setCurrent(workingDirectory)) {
+        qCritical() << "SET WORKING_DIRECTORY" << workingDirectory
+                    << "FAILED FOR" << m_command;
+        return false;
+    }
+    if (m_p != nullptr) {
+        delete m_p;
+    }
+    m_p = new QProcess(this);
+    m_p->setWorkingDirectory(workingDirectory);
+    m_p->setProcessChannelMode(QProcess::MergedChannels);
+
+    connect(m_p, SIGNAL(readyReadStandardOutput()), this, SLOT(readyReadStandardOutput()));
+    connect(m_p, SIGNAL(readyReadStandardError()), this, SLOT(readyReadStandardError()));
+
+    if (!args.isEmpty()) {
+        m_p->start(m_command, args);
+    } else {
+        m_p->start(m_command);
+    }
+
+    return m_p->waitForStarted(m_waitForStartTimeout);
+}
+
 bool Command::execute(QString workingDirectory, QStringList args) {
 
     if (!QDir::setCurrent(workingDirectory)) {

UpdatePTUDevCtrl/process/command.h

@@ -9,7 +9,7 @@
 #include <QProcess>
 #include <QMutex>
 
-
+class Worker;
 class Command : public QObject {
     Q_OBJECT
 
@@ -19,6 +19,8 @@ class Command : public QObject {
     int m_waitForFinishTimeout;
     int m_exitCode;
     mutable QMutex m_mtx;
+    QProcess *m_p;
+    Worker *m_worker;
 public:
     explicit Command(QString const &command,
                      int start_timeout = 100000,
@@ -28,8 +30,11 @@ public:
     QString command() const { return m_command; }
 
     bool execute(QString workingDirectory, QStringList args = QStringList());
+    bool start(QString workingDirectory, QStringList args = QStringList());
     int exitCode() const { return m_exitCode; }
 
+    void setWorker(Worker *worker) {m_worker = worker; }
+
 private slots:
     void readyReadStandardOutput();
     void readyReadStandardError();

UpdatePTUDevCtrl/utils.cpp

@@ -13,9 +13,65 @@
 #include <QDir>
 #include <QDirIterator>
 #include <QRegularExpression>
+#include <QProcess>
+#include <QJsonDocument>
+#include <QJsonValue>
+#include <QJsonObject>
+#include <QJsonArray>
 
 #include <fstream>
 
+QVector<QPair<QString, QString>> Utils::installedPackages() {
+    QVector<QPair<QString, QString>> vec;
+    if (QFile::exists("/usr/bin/ptuPackageVersions")) {
+        QProcess p;
+        QStringList params;
+        params << "-c" << R"(/usr/bin/ptuPackageVersions -i -o json)";
+
+        p.start("bash", params);
+        p.waitForFinished();
+
+        QString r = p.readAllStandardOutput();
+
+        // ptuPackageVersions returns a json-array
+        QJsonArray const &ja = QJsonDocument::fromJson(r.remove(QRegExp("\\n")).toUtf8()).array();
+        if (!ja.empty()) {
+            qCritical() << __LINE__;
+            // transform the array into an object, containing the objects
+            // of the array (christian needs it this way)
+            foreach (QJsonValue const &value, ja) {
+                if (value.isObject()) {
+                    QJsonObject obj = value.toObject();
+                    QStringList keys = obj.keys();
+                    if (!keys.isEmpty()) {
+                        QString const &k = keys.first();
+                        QJsonValue const &v = obj.value(k);
+                        if (v.isObject()) {
+                            obj = v.toObject();
+                            if (obj.keys().contains("Version")) {
+                                QJsonValue const &w = obj.value("Version");
+                                if (w.isString()) {
+                                    QString s = w.toString();
+                                    QPair<QString, QString> p(k, s);
+                                    vec.push_back(p);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        } else {
+            qCritical() << __func__ << ":" << __LINE__
+                        << "ERROR array return by ptuPackageVersions empty";
+        }
+    } else {
+        qCritical() << __func__ << ":" << __LINE__
+                    << "ERROR executing ptuPackageVersions";
+    }
+
+    return vec;
+}
+
 int Utils::read1stLineOfFile(QString fileName) {
     QFile f(fileName);
     if (f.exists()) {

UpdatePTUDevCtrl/utils.h

@@ -9,6 +9,7 @@
 #include <QDateTime>
 #include <QDir>
 #include <QDebug>
+#include <QPair>
 
 namespace Utils {
     int read1stLineOfFile(QString fileName);
@@ -33,6 +34,8 @@ namespace Utils {
 
     QString getParentName();
     bool isATBQTRunning();
+
+    QVector<QPair<QString, QString>> installedPackages();
 }
 
 #endif // UTILS_H_INCLUDED

UpdatePTUDevCtrl/worker.cpp

@@ -26,6 +26,7 @@
 #include "progress_event.h"
 #include "mainwindow.h"
 #include "utils.h"
+#include "process/command.h"
 
 QString const Worker::UPDATE_STEP_OK     (   " [  ok]");
 QString const Worker::UPDATE_STEP_DONE   (   " [done]");
@@ -176,9 +177,14 @@ Worker::Worker(int customerNr,
   , m_filesToUpdate()
   , m_updateProcessRunning(true)
   , m_mainWindow(nullptr) /* contains plugin */
+  , m_dcDownloadFirmware(new Command("/opt/app/tools/atbupdate/ATBDownloadDCFirmware --read-dc-version true"))
   //, m_withoutIsmasDirectPort(true) /* useful for testing */ {
   , m_withoutIsmasDirectPort(false) /* useful for testing */ {
 
+
+    m_start = QDateTime::currentDateTime();
+    m_dcDownloadFirmware->setWorker(this);
+
     // TODO: turn object into singleton
     instance = this;
     m_lastFailedUpdateStep = UPDATE_STEP::NONE;
@@ -284,6 +290,8 @@ void Worker::privateUpdate() {
         return;
     }
 
+    return;
+
     QString func(__PRETTY_FUNCTION__);
 
     GUI() << (ISMAS() << (CONSOLE() << UPDATE_STEP::STARTED));
@@ -1267,6 +1275,7 @@ QString Worker::getPluginVersion(QString const &pluginFileName) const {
 
 QStringList Worker::getDCVersion() const {
     QStringList lst = (QStringList() << "N/A" << "N/A");
+#if 0
     Update const *up = update();
     if (up) {
         hwinf const *caPlugin = up->hw();
@@ -1288,6 +1297,7 @@ QStringList Worker::getDCVersion() const {
             }
         }
     }
+#endif
     return lst;
 }
 
@@ -1500,3 +1510,78 @@ PSAInstalled Worker::getPSAInstalled() {
 
     return psaInstalled;
 }
+
+bool Worker::dcUpdate() {
+    return m_dcDownloadFirmware->start("/opt/app/tools/atbupdate");
+}
+
+void Worker::summary() {
+
+    QString summary, first, second, line, tmp;
+    QVector<QPair<QString, QString>> vec = Utils::installedPackages();
+
+    int max_first = 0, max_second = 0;
+    for (int i = 0; i < vec.size(); ++i) {
+        max_first = std::max(max_first, vec[i].first.length());
+        max_second = std::max(max_second, vec[i].second.length());
+    }
+
+    max_first += 5;
+
+    summary = "UPDATE SUMMARY\n\n";
+
+    first = QString("%1").arg("start", max_first, QChar(' '));
+    tmp = QString("%1").arg(start().toString(Qt::ISODate));
+    second = QString("%1").arg(tmp, -max_second, QChar(' '));
+    line = first + ": " + second;
+    summary += line + "\n";
+
+    first = QString("%1").arg("update tool version", max_first, QChar(' '));
+    tmp = QString("%1 - %2 %3").arg(APP_VERSION).arg(APP_BUILD_DATE).arg(APP_BUILD_TIME);
+    second = QString("%1").arg(tmp, -max_second, QChar(' '));
+    line = first + ": " + second;
+    summary += line + "\n";
+
+    first = QString("%1").arg("machine number", max_first, QChar(' '));
+    tmp = QString("%1").arg(machineNr());
+    second = QString("%1").arg(tmp, -max_second, QChar(' '));
+    line = first + ": " + second;
+    summary += line + "\n";
+
+    first = QString("%1").arg("customer number", max_first, QChar(' '));
+    tmp = QString("%1").arg(customerNr());
+    second = QString("%1").arg(tmp, -max_second, QChar(' '));
+    line = first + ": " + second;
+    summary += line + "\n";
+
+    first = QString("%1").arg("zone number", max_first, QChar(' '));
+    tmp = QString("%1").arg(zoneNr());
+    second = QString("%1").arg(tmp, -max_second, QChar(' '));
+    line = first + ": " + second;
+    summary += line + "\n";
+
+    if (m_mainWindow) {
+        tmp = m_mainWindow->targetDcVersion();
+        if (!tmp.isEmpty()) {
+            first = QString("%1").arg("target device controller", max_first, QChar(' '));
+            second = QString("%1").arg(tmp, -max_second, QChar(' '));
+            line = first + ": " + second;
+            summary += line + "\n";
+        }
+    }
+
+    first = QString("%1").arg("apism", max_first, QChar(' '));
+    tmp = QString("%1").arg(apismVersion());
+    second = QString("%1").arg(tmp, -max_second, QChar(' '));
+    line = first + ": " + second;
+    summary += line + "\n";
+
+    for (int i = 0; i < vec.size(); ++i) {
+        first = QString("%1").arg(vec[i].first, max_first, QChar(' '));
+        second = QString("%1").arg(vec[i].second, -max_second, QChar(' '));
+        line = first + ": " + second;
+        summary += line + "\n";
+    }
+
+    emit showSummary(summary);
+}

UpdatePTUDevCtrl/worker.h

@@ -15,7 +15,6 @@
 #include <optional>
 #include <initializer_list>
 
-#include "update.h"
 #include "git/git_client.h"
 #include "ismas/ismas_client.h"
 #include "utils.h"
@@ -135,6 +134,8 @@
 #define ISMAS_UPDATE_REQUESTS                       (10)
 #define CHECK_UPDATE_TRIGGER_SET                    "Check update trigger ..."
 
+class Command;
+class Update;
 class MainWindow;
 class hwinf;
 class Worker : public QThread{
@@ -189,6 +190,7 @@ class Worker : public QThread{
     QStringList m_ismasTriggerStatusMessage;
 
     MainWindow *m_mainWindow;
+    Command *m_dcDownloadFirmware;
     bool m_withoutIsmasDirectPort;
     QString m_apismVersion;
 
@@ -458,8 +460,13 @@ public:
     Update *update() { return m_update; }
     Update const *update() const { return m_update; }
 
+    bool dcUpdate();
+    void summary();
+    QDateTime start() { return m_start; }
+
 signals:
     void appendText(QString, QString suffix = "");
+    void insertText(QString);
     void replaceLast(QString, QString);
     void replaceLast(QStringList, QString);
     void showErrorMessage(QString title, QString description);
@@ -470,6 +477,9 @@ signals:
     void restartExitTimer();
     void enableExit();
     void disableExit();
+    void showDcDownload(QString);
+    void showSummary(QString);
+    void setDcDownloadProgress(int);
 
 private slots:
     bool updateTriggerSet();
@@ -487,6 +497,8 @@ private:
     bool computeFilesToDownload();
     bool execOpkgCommands();
 
+    QDateTime m_start;
+
     static const QMap<UPDATE_STEP, const char*> smap;
 
     // CONSOLE()

common/include/System.h

@@ -25,7 +25,9 @@ public:
     static bool umountSDCard();
 
     static std::optional<QString> checkForUSBStick(QString const &dirPathUnderMountPath = ".");
+    static std::optional<QString> checkForSDCard(QString const &dirPathUnderMountPath = ".");
     static QString getUSBMountPath(QString const &dirPathUnderMountPath = ".");
+    static QString getSDMountPath(QString const &dirPathUnderMountPath = ".");
 
     //static QString getUSBDeviceName();
     static bool umountUSBStick();
@@ -54,7 +56,8 @@ public:
     static QString getPTU4MACAddress();
 
     static QStringList getJsonFilesOnUsbStick(QString const &mountPath);
-
+    static QString getDCFileOnUsbStick(QString const &mountPath);
+    static QString getDCFileOnSDCard(QString const &mountPath);
 };
 
 #endif // SYSTEM_H

common/src/System.cpp

@@ -265,6 +265,20 @@ std::optional<QString> System::checkForUSBStick(QString const &dirPathUnderMount
     return mountPath.isEmpty() ? std::nullopt : std::optional<QString>(mountPath);
 }
 
+std::optional<QString> System::checkForSDCard(QString const &dirPathUnderMountPath) {
+#if defined (ARCH_DesktopLinux)
+    // DEBUG / TEST:
+    if (QFileInfo(getSDMountPath()).isDir())
+        return true;
+    else
+        return false;
+#endif
+
+    QString const &mountPath = getSDMountPath(dirPathUnderMountPath);
+    // qCritical() << "MOUNT-PATH" << mountPath;
+    return mountPath.isEmpty() ? std::nullopt : std::optional<QString>(mountPath);
+}
+
 
 
 /**
@@ -315,7 +329,7 @@ QString System::getUSBMountPath(QString const &dirPathUnderMountPath) {
 
                 mountLine = line.split(' ');
                 if (mountLine.size() > 3) {
-                    qCritical() << "System::getUSBMountPath(): " << mountLine.at(0) << " is mounted on " << mountLine.at(2);
+                    // qCritical() << "System::getUSBMountPath(): " << mountLine.at(0) << " is mounted on " << mountLine.at(2);
                     QDir d(QDir::cleanPath(mountLine.at(2) + QDir::separator() + dirPathUnderMountPath));
                     if (d.exists()) {
                         return mountLine.at(2);
@@ -332,6 +346,64 @@ QString System::getUSBMountPath(QString const &dirPathUnderMountPath) {
     return "";
 }
 
+QString System::getSDMountPath(QString const &dirPathUnderMountPath) {
+
+#if defined (ARCH_DesktopLinux)
+    // DEBUG / TEST:
+    return QDir::homePath().append("/APconfigTest/USB");
+#endif
+
+    QProcess process;
+    process.setProcessChannelMode(QProcess::MergedChannels);
+
+    QStringList mountLine;
+
+    qDebug() << "System::getSDMountPath()";
+
+    QRegExp devRegExp   = QRegExp("dev/mmc*",   Qt::CaseSensitive, QRegExp::WildcardUnix);
+    QRegExp mountRegExp = QRegExp("media/mmc*", Qt::CaseSensitive, QRegExp::WildcardUnix);
+
+    QString commandString = "mount";
+
+    process.start(commandString);
+    if (!process.waitForStarted()) {
+        errorMsg = "System::getSDMountPath(): ERROR: waitForStarted()";
+        return "";
+    }
+    if (!process.waitForFinished(600000)) {
+        errorMsg = "System::getSDMountPath(): ERROR: " + process.errorString();
+        qDebug() << errorMsg;
+        return "";
+    }
+    else {
+        QByteArray bytes = process.readAll();
+        QStringList lines = QString(bytes).split("\n");
+        foreach (QString line, lines) {
+            qDebug() << "System::getSDMountPath() line:    " << line;
+
+            if (line.contains(devRegExp) && line.contains(mountRegExp)) {
+
+                qDebug() << "  -> this line is a usb storage device mount" << line;
+
+                mountLine = line.split(' ');
+                if (mountLine.size() > 3) {
+                    // qCritical() << "System::getSDMountPath(): " << mountLine.at(0) << " is mounted on " << mountLine.at(2);
+                    QDir d(QDir::cleanPath(mountLine.at(2) + QDir::separator() + dirPathUnderMountPath));
+                    if (d.exists()) {
+                        return mountLine.at(2);
+                    } else {
+                        qCritical() << "directory" << d.absolutePath() << "does not exist";
+                    }
+                }
+            }
+        }
+    }
+
+    qDebug() << "System::getSDMountPath() no mounted usb device found!";
+
+    return "";
+}
+
 QStringList System::getJsonFilesOnUsbStick(QString const &mountPath) {
     QStringList jsonFiles;
 
@@ -354,6 +426,38 @@ QStringList System::getJsonFilesOnUsbStick(QString const &mountPath) {
     return jsonFiles;
 }
 
+QString System::getDCFileOnUsbStick(QString const &mountPath) {
+    QString dcFile;
+
+    // /media/sda2/etc/dc
+    QString const &dirPath = QDir::cleanPath(mountPath + QDir::separator() + "etc" + QDir::separator() + "dc");
+    QDir d(dirPath);
+    if (d.exists()) {
+        QFileInfo fi(dirPath + QDir::separator() + "dc2c.bin");
+        if (fi.exists()) {
+            dcFile = fi.absoluteFilePath();
+        }
+    }
+
+    return dcFile;
+}
+
+QString System::getDCFileOnSDCard(QString const &mountPath) {
+    QString dcFile;
+
+    // /media/sda2/etc/dc
+    QString const &dirPath = QDir::cleanPath(mountPath + QDir::separator() + "etc" + QDir::separator() + "dc");
+    QDir d(dirPath);
+    if (d.exists()) {
+        QFileInfo fi(dirPath + QDir::separator() + "dc2c.bin");
+        if (fi.exists()) {
+            dcFile = fi.absoluteFilePath();
+        }
+    }
+
+    return dcFile;
+}
+
 /********************************************************************************
  * static function to check if a mounted sd-card is writable.
  *