diff -r -u digitemp-3.3.2.orig/userial/ds9097u/ds2480ut.c digitemp-3.3.2/userial/ds9097u/ds2480ut.c
--- digitemp-3.3.2.orig/userial/ds9097u/ds2480ut.c	Mon Jan 26 01:40:11 2004
+++ digitemp-3.3.2/userial/ds9097u/ds2480ut.c	Thu Feb 17 23:55:51 2005
@@ -41,6 +41,15 @@
 //           2.10 -> 3.00 Added memory bank functionality
 //                        Added file I/O operations
 //
+//
+
+//  based on Version 3.00: 
+// 
+//  2005-02-17: DS2480_Try() modification for (pseudo) serial lines 
+//              that cannot send a break - e.g. bluetooth links 
+//              by Christian Kreiner  (kreiner at iti dot tu-graz dot ac dat at)
+//  
+// 
 
 #include "ownet.h"
 #include "ds2480.h"
@@ -121,6 +130,10 @@
    // delay to let line settle
    msDelay(4);
 
+   // just in case the 2480 did not undergo a reset - switch to command mode
+   //    [ this could happen over (pseudo) serial lines that cannot send a BREAK
+   //    like a bluetooth link ]
+   sendpacket[sendlen++] = MODE_COMMAND;
    // set the FLEX configuration parameters
    // default PDSRC = 1.37Vus
    sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_SLEW | PARMSET_Slew1p37Vus;
@@ -140,7 +153,7 @@
      int i;
            
      printf("sendpacket: ");
-     for(i=0;i<5;i++)
+     for(i=0;i<sendlen;i++)
        printf("%02X ", sendpacket[i] );
      printf("\n");
    }
@@ -152,16 +165,20 @@
    // send the packet
    if (WriteCOM(portnum,sendlen,sendpacket))
    {
+	int bytesToRead = 5 ;
       // read back the response
-      if (ReadCOM(portnum,5,readbuffer) == 5)
+      if (ReadCOM(portnum,1,readbuffer) == 1)
       {
-         // look at the baud rate and bit operation
-         // to see if the response makes sense
-         if (((readbuffer[3] & 0xF1) == 0x00) &&
-             ((readbuffer[3] & 0x0E) == UBaud[portnum]) &&
-             ((readbuffer[4] & 0xF0) == 0x90) &&
-             ((readbuffer[4] & 0x0C) == UBaud[portnum]))
-         {
+	if ( ((readbuffer[0] & 0xC0) == 0xC0 ) ) {
+		// if there is a response to the 0xC1 timing byte, 
+		// it has been understood as command  
+	} else {
+		bytesToRead--;
+	} 
+
+        // read back the response rest
+        if (ReadCOM(portnum, bytesToRead, readbuffer+ (5-bytesToRead)) == bytesToRead)
+        {
 #ifdef DEBUG_USERIAL
            int i;
            
@@ -171,21 +188,26 @@
            printf("\n");
 #endif /* DEBUG_USERIAL */
 
-            return TRUE;
-         } else {
-#ifdef DEBUG_USERIAL
-           int i;
-           printf("readbuffer: ");
-           for(i=0;i<5;i++)
-             printf("%02X ", readbuffer[i] );
-           printf("\n");
-#endif /* DEBUG_USERIAL */
+           // look at the baud rate and bit operation
+           // to see if the response makes sense
+           if (((readbuffer[3] & 0xF1) == 0x00) &&
+             ((readbuffer[3] & 0x0E) == UBaud[portnum]) &&
+             ((readbuffer[4] & 0xF0) == 0x90) &&
+             ((readbuffer[4] & 0x0C) == UBaud[portnum]))
+           {
+              return TRUE;
+           } else {
+             OWERROR(OWERROR_DS2480_BAD_RESPONSE);
+           }
+        }
+        else
+           OWERROR(OWERROR_READCOM_FAILED);
 
-           OWERROR(OWERROR_DS2480_BAD_RESPONSE);
-         }
-      }
-      else
+      } else {
          OWERROR(OWERROR_READCOM_FAILED);
+      }
+
+
    }
    else
       OWERROR(OWERROR_WRITECOM_FAILED);