diff --git a/DSView/main.cpp b/DSView/main.cpp
index 9cf213cf..6c13cf2b 100755
--- a/DSView/main.cpp
+++ b/DSView/main.cpp
@@ -29,7 +29,7 @@
 #include <QDir>
 #include <QTranslator>
 #include <QDesktopServices>
-#include <QStyle>
+#include <QStyle> 
 
 #include "dsapplication.h"
 #include "mystyle.h" 
@@ -111,7 +111,7 @@ int main(int argc, char *argv[])
     QApplication::setOrganizationName("DreamSourceLab");
     QApplication::setOrganizationDomain("www.DreamSourceLab.com");
 
-	printf("\n-----------------version: %s-----------------\n\n", DS_VERSION_STRING);
+	qDebug()<<"\n----------------- version:"<<DS_VERSION_STRING<<"-----------------\n\n";
 
 #ifdef Q_OS_LINUX
 	// Use low version qt plugins, for able to debug
diff --git a/DSView/pv/data/decoderstack.h b/DSView/pv/data/decoderstack.h
index bb77ac73..fab50833 100755
--- a/DSView/pv/data/decoderstack.h
+++ b/DSView/pv/data/decoderstack.h
@@ -136,7 +136,7 @@ public:
     }
  
 	void begin_decode_work();
-    void do_decode_work();
+    
     void stop_decode_work();  
     int list_rows_size();
     bool options_changed();
@@ -153,7 +153,7 @@ private:
     void decode_data(const uint64_t decode_start, const uint64_t decode_end, srd_session *const session);
 	void decode_proc();
 	static void annotation_callback(srd_proto_data *pdata, void *decoder);
-
+    void do_decode_work();
   
 signals:
 	void new_decode_data();
diff --git a/libsigrokdecode4DSL/decoders/common/srdhelper/mod.py b/libsigrokdecode4DSL/decoders/common/srdhelper/mod.py
old mode 100644
new mode 100755
index 6c45af98..b56cce6d
--- a/libsigrokdecode4DSL/decoders/common/srdhelper/mod.py
+++ b/libsigrokdecode4DSL/decoders/common/srdhelper/mod.py
@@ -31,6 +31,20 @@ def bin2int(s: str):
 def bitpack(bits):
     return sum([b << i for i, b in enumerate(bits)])
 
+def bitpack_lsb(bits, idx=None):
+    '''Conversion from LSB first bit sequence to integer.'''
+    if idx is not None:
+        bits = [b[idx] for b in bits]
+    return bitpack(bits)
+
+def bitpack_msb(bits, idx=None):
+    '''Conversion from MSB first bit sequence to integer.'''
+    bits = bits[:]
+    if idx is not None:
+        bits = [b[idx] for b in bits]
+    bits.reverse()
+    return bitpack(bits)
+
 def bitunpack(num, minbits=0):
     res = []
     while num or minbits > 0: