diff --git a/include/tslib.h b/include/tslib.h
index 7d2733e..bc38ade 100644
--- a/include/tslib.h
+++ b/include/tslib.h
@@ -13,6 +13,9 @@ uint32_t uchar2ulong(uint8_t Highbyte, uint8_t MHbyte, uint8_t MLbyte, uint8_t L
 
 uint8_t  uint2uchar(uint16_t uival, bool getHighB);
 
+uint8_t ulong2uchar(uint32_t ulval, uint8_t getBytNr);
+    // getBytNr: 0=LSB  3=MSB
+
 
 void delay(uint16_t MilliSec);
 
diff --git a/src/tslib.cpp b/src/tslib.cpp
index 4afd7e9..a257256 100644
--- a/src/tslib.cpp
+++ b/src/tslib.cpp
@@ -76,6 +76,23 @@ uint8_t uint2uchar(uint16_t uival, bool getHighB)
 }
 
 
+uint8_t ulong2uchar(uint32_t ulval, uint8_t getBytNr)
+{
+    // getBytNr: 0=LSB  3=MSB
+    uint32_t ultmp=ulval;
+    if (getBytNr==0)
+        return uint8_t(ultmp);
+    ultmp>>=8;
+    if (getBytNr==1)
+        return uint8_t(ultmp);
+    ultmp>>=8;
+    if (getBytNr==2)
+        return uint8_t(ultmp);
+    ultmp>>=8;
+    return uint8_t(ultmp);
+
+}
+
 void delay(uint16_t MilliSec)
 {
     QThread::msleep(uint32_t(MilliSec));