add sniffer

2016-07-07 16:47:43 +02:00
parent e9d3b718c9
commit 314ea0769d
10 changed files with 862 additions and 0 deletions
@@ -0,0 +1,86 @@
+#include <QVariant>
+#include <QDebug>
+#include "snifferitem.h"
+
+
+SnifferItem::SnifferItem(const CANFrame& pFrame):
+    mNotch(0)
+{
+    mID = pFrame.ID;
+    mMarker = {0,0};
+    mLastMarker = {0,0};
+    /* that's dirty */
+    update(pFrame);
+    update(pFrame);
+}
+
+
+SnifferItem::~SnifferItem()
+{
+
+}
+
+quint64 SnifferItem::getId() const
+{
+    return mID;
+}
+
+float SnifferItem::getDelta() const
+{
+    return ((float)(mCurrentTime-mLastTime))/1000000;
+}
+
+int SnifferItem::getData(uchar i) const
+{
+    return (i>=mCurrent.len) ? -1 : ((uchar*) &mCurrent.data)[i];
+}
+
+dc SnifferItem::dataChange(uchar i) const
+{
+    if(     i<mCurrent.len &&
+            ((uchar*) &mLastMarker.data)[i] &&
+            !((uchar*) &mNotch)[i] )
+    {
+        return ((uchar*) &mCurrent.data)[i] >= ((uchar*) &mLast.data)[i] ? dc::INC : dc::DEC;
+    }
+
+    return dc::NO;
+}
+
+int SnifferItem::elapsed() const
+{
+    return mTime.elapsed();
+}
+
+void SnifferItem::update(const CANFrame& pFrame)
+{
+    /* copy current to last */
+    mLast = mCurrent;
+    mLastTime = mCurrentTime;
+
+    /* copy new value */
+    memcpy(&mCurrent.data, pFrame.data, 8);
+    mCurrent.len = pFrame.len;
+    mCurrentTime = pFrame.timestamp;
+
+    /* update marker */
+    mMarker.data |= mLast.data ^ mCurrent.data;
+    mMarker.len  |= mLast.len ^ mCurrent.data;
+
+    /* restart timeout */
+    mTime.restart();
+}
+
+void SnifferItem::updateMarker()
+{
+    mLastMarker = mMarker;
+    mMarker = {0, 0};
+}
+
+void SnifferItem::notch(bool pNotch)
+{
+    if(pNotch)
+        mNotch |= mLastMarker.data;
+    else
+        mNotch = 0;
+}