diff --git a/hardwaresetup.cpp b/hardwaresetup.cpp
index 836679d..5aaf945 100644
--- a/hardwaresetup.cpp
+++ b/hardwaresetup.cpp
@@ -6,6 +6,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
+#include <termios.h>
 #include <unistd.h>
 #include <usb.h>
 
@@ -315,6 +316,21 @@ void HardwareSetup::run() {
         struct TransStruct * received;
         uint8_t uintBuf[4 * 6];
         void * voidBuf;
+
+        // flush existing data
+        struct termios config;
+        tcgetattr(fd, &config);
+        config.c_lflag = 0; // standard value is bad choosen
+
+        tcsetattr(fd, TCSANOW, &config);
+        cout << "alles io" << endl;
+        ssize_t length = read(fd, uintBuf, 24);
+        if (length < 24) {
+
+            tcflush(fd, TCIFLUSH);
+            // length = read(fd, uintBuf, 24);
+        }
+
         while (!this->stop) {
 
             // read data