Controls and code for using a J1939 database.

dbc/dbchandler.cpp

@@ -85,9 +85,34 @@ DBC_MESSAGE* DBCMessageHandler::findMsgByID(uint32_t id)
     if (messages.count() == 0) return NULL;
     for (int i = 0; i < messages.count(); i++)
     {
-        if (messages[i].ID == id)
+        if (isJ1939Handler)
         {
-            return &messages[i];
+            // include data page and extended data page in the pgn
+            uint32_t pgn = (id & 0x3FFFF00) >> 8;
+            if ( (pgn & 0xFF00) <= 0xEF00 )
+            {
+                // PDU1 format
+                pgn &= 0x3FF00;
+                if ((messages[i].ID & 0x3FF0000) == (pgn << 8))
+                {
+                    return &messages[i];
+                }
+            }
+            else
+            {
+                // PDU2 format
+                if ((messages[i].ID & 0x3FFFF00) == (pgn << 8))
+                {
+                    return &messages[i];
+                }
+            }
+        }
+        else
+        {
+            if ( messages[i].ID == id )
+            {
+                return &messages[i];
+            }
         }
     }
     return NULL;
@@ -176,6 +201,16 @@ int DBCMessageHandler::getCount()
     return messages.count();
 }
 
+bool DBCMessageHandler::isJ1939()
+{
+    return isJ1939Handler;
+}
+
+void DBCMessageHandler::setJ1939(bool j1939)
+{
+    isJ1939Handler = j1939;
+}
+
 DBCFile::DBCFile()
 {
     messageHandler = new DBCMessageHandler;
@@ -187,6 +222,7 @@ DBCFile::DBCFile(const DBCFile& cpy)
     for (int i = 0 ; i < cpy.messageHandler->getCount() ; i++)
         messageHandler->addMessage(*cpy.messageHandler->findMsgByIdx(i));
 
+    messageHandler->setJ1939(cpy.messageHandler->isJ1939());
     fileName = cpy.fileName;
     filePath = cpy.filePath;
     assocBuses = cpy.assocBuses;
@@ -764,12 +800,24 @@ void DBCFile::loadFile(QString fileName)
         fgAttr = findAttributeByName("GenMsgForegroundColor");
     }
 
+    DBC_ATTRIBUTE *j1939attr = findAttributeByName("isj1939dbc");
+    if (j1939attr)
+    {
+        messageHandler->setJ1939(j1939attr->defaultValue > 0);
+    }
+    else
+    {
+        messageHandler->setJ1939(false);
+    }
+
     QColor DefaultBG = QColor(bgAttr->defaultValue.toString());
     QColor DefaultFG = QColor(fgAttr->defaultValue.toString());
 
     DBC_ATTRIBUTE_VALUE *thisBG;
     DBC_ATTRIBUTE_VALUE *thisFG;
 
+
+
     for (int x = 0; x < messageHandler->getCount(); x++)
     {
         DBC_MESSAGE *msg = messageHandler->findMsgByIdx(x);
@@ -1237,6 +1285,15 @@ int DBCHandler::createBlankFile()
     attr.valType = QSTRING;
     newFile.dbc_attributes.append(attr);
 
+    attr.attrType = MESSAGE;
+    attr.defaultValue = 0;
+    attr.enumVals.clear();
+    attr.lower = 0;
+    attr.upper = 0;
+    attr.name = "isj1939dbc";
+    attr.valType = QINT;
+    newFile.dbc_attributes.append(attr);
+
     loadedFiles.append(newFile);
     return loadedFiles.count();
 }

dbc/dbchandler.h

@@ -40,8 +40,11 @@ public:
     bool removeMessage(QString name);
     void removeAllMessages();
     int getCount();
+    bool isJ1939();
+    void setJ1939(bool j1939);
 private:
     QList<DBC_MESSAGE> messages;
+    bool isJ1939Handler;
 };
 
 //technically there should be a node handler too but I'm sort of treating nodes as second class

dbc/dbcloadsavewindow.cpp

@@ -1,5 +1,6 @@
 #include "dbcloadsavewindow.h"
 #include "ui_dbcloadsavewindow.h"
+#include <QCheckBox>
 
 DBCLoadSaveWindow::DBCLoadSaveWindow(const QVector<CANFrame> *frames, QWidget *parent) :
     QDialog(parent),
@@ -12,11 +13,13 @@ DBCLoadSaveWindow::DBCLoadSaveWindow(const QVector<CANFrame> *frames, QWidget *p
     ui->setupUi(this);
 
     QStringList header;
-    header << "Filename" << "Associated Bus";
-    ui->tableFiles->setColumnCount(2);
+    header << "Filename" << "Associated Bus" << "J1939";
+    ui->tableFiles->setColumnCount(3);
     ui->tableFiles->setHorizontalHeaderLabels(header);
-    ui->tableFiles->setColumnWidth(0, 355);
+    ui->tableFiles->setColumnWidth(0, 265);
     ui->tableFiles->setColumnWidth(1, 125);
+    ui->tableFiles->setColumnWidth(2, 80);
+    ui->tableFiles->horizontalHeader()->setStretchLastSection(true);
 
     connect(ui->btnEdit, &QAbstractButton::clicked, this, &DBCLoadSaveWindow::editFile);
     connect(ui->btnLoad, &QAbstractButton::clicked, this, &DBCLoadSaveWindow::loadFile);
@@ -27,6 +30,7 @@ DBCLoadSaveWindow::DBCLoadSaveWindow(const QVector<CANFrame> *frames, QWidget *p
     connect(ui->btnNewDBC, &QAbstractButton::clicked, this, &DBCLoadSaveWindow::newFile);
     connect(ui->tableFiles, &QTableWidget::cellChanged, this, &DBCLoadSaveWindow::cellChanged);
     connect(ui->tableFiles, &QTableWidget::cellDoubleClicked, this, &DBCLoadSaveWindow::cellDoubleClicked);
+    //connect(ui->tableFiles, &QTableWidget::cellActivated, this, &DBCLoadSaveWindow::cellChanged);
 
     editorWindow = new DBCMainEditor(frames);
 }
@@ -43,6 +47,10 @@ void DBCLoadSaveWindow::newFile()
     ui->tableFiles->insertRow(ui->tableFiles->rowCount());
     ui->tableFiles->setItem(idx, 0, new QTableWidgetItem("UNNAMEDFILE"));
     ui->tableFiles->setItem(idx, 1, new QTableWidgetItem("-1"));
+
+    QTableWidgetItem *item = new QTableWidgetItem("");
+    item->setCheckState(Qt::Unchecked);
+    ui->tableFiles->setItem(idx, 2, item);
 }
 
 void DBCLoadSaveWindow::loadFile()
@@ -53,6 +61,17 @@ void DBCLoadSaveWindow::loadFile()
         ui->tableFiles->insertRow(ui->tableFiles->rowCount());
         ui->tableFiles->setItem(idx, 0, new QTableWidgetItem(file->getFullFilename()));
         ui->tableFiles->setItem(idx, 1, new QTableWidgetItem("-1"));
+        DBC_ATTRIBUTE *attr = file->findAttributeByName("isj1939dbc");
+        QTableWidgetItem *item = new QTableWidgetItem("");
+        ui->tableFiles->setItem(idx, 2, item);
+        if (attr && attr->defaultValue > 0)
+        {
+            item->setCheckState(Qt::Checked);
+        }
+        else
+        {
+            item->setCheckState(Qt::Unchecked);
+        }
     }
 }
 
@@ -110,6 +129,35 @@ void DBCLoadSaveWindow::cellChanged(int row, int col)
             file->setAssocBus(bus);
         }
     }
+    else if (col == 2)
+    {
+        DBCFile *file = dbcHandler->getFileByIdx(row);
+        if (file)
+        {
+            //int isj1939dbc = ui->tableFiles->item(row, col)->text().toInt();
+            bool isj1939dbc = ui->tableFiles->item(row, col)->checkState() == Qt::Checked;
+            DBC_ATTRIBUTE *attr = file->findAttributeByName("isj1939dbc");
+            if (attr)
+            {
+                attr->defaultValue = isj1939dbc ? 1 : 0;
+                file->messageHandler->setJ1939(isj1939dbc);
+            }
+            else
+            {
+                DBC_ATTRIBUTE attr;
+
+                attr.attrType = MESSAGE;
+                attr.defaultValue = isj1939dbc ? 1 : 0;
+                attr.enumVals.clear();
+                attr.lower = 0;
+                attr.upper = 0;
+                attr.name = "isj1939dbc";
+                attr.valType = QINT;
+                file->dbc_attributes.append(attr);
+                file->messageHandler->setJ1939(isj1939dbc);
+            }
+        }
+    }
 }
 
 void DBCLoadSaveWindow::cellDoubleClicked(int row, int col)