Add collected changes from T.Sax

src/prot.cpp

@@ -97,14 +97,22 @@ void T_prot::setRecLen(uint16_t ReadCmd)
 
 void T_prot::setUserWriteData(uint16_t WriteCmd, uint16_t WrAddr, uint8_t  WrDatLen, uint8_t *data)
 {
+    int nn;
     WriteCommand=WriteCmd;
     WriteAddr=WrAddr;
     WrDataLength=WrDatLen;
     if (WrDataLength>FRAME_DATALEN)
         WrDataLength=FRAME_DATALEN;
 
-    for (int nn=0; nn<WrDataLength; nn++)
+    // ui8BLsendData[BL_DATA_LEN];
+
+    for (nn=0; nn<WrDataLength; nn++)
         ui8OutputData[nn]=data[nn];
+
+    // clear the rest. added at 26.6.2024TS. important for printer text
+    for (nn=WrDataLength; nn<FRAME_DATALEN; nn++)
+        ui8OutputData[nn]=0;
+
     SendDataValid=1;    // always set WR first
     kindOfData=0;    // 0: binaries, 1:text
     this->setRecLen(100);   // default: short response