diff --git a/mainwindow.cpp b/mainwindow.cpp
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -26,6 +26,7 @@
 #include <QTextStream>
 #include <QtDebug>
 #include <QtEndian>
+#include <QTextCursor>
 #include <qwt_plot.h>
 #include <limits.h>
 #include <cmath>
@@ -533,6 +534,15 @@ template<typename T> double MainWindow::
     T data;
     this->serialPort.read((char*) &data, sizeof(data));
 
+    // print data in hex format
+    if (ui->cbEnableTextView->isChecked())
+    {
+        QTextCursor cursor(ui->ptTextView->document());
+        cursor.movePosition(QTextCursor::End);
+        QByteArray ba((char*) &data, sizeof(data));
+        cursor.insertText(ba.toHex() + " ");
+    }
+
     if (ui->rbLittleE->isChecked())
     {
         data = qFromLittleEndian(data);