REPROGRAMMING MODE


       The SuperStar OEM has an integrated reprogramming facility.
       The OEM circuit card assembly is forced to enter reprogramming mode
       when the voltage at the input pin DISC_IP_1 is HI.
       More information on this mode is available on  request.

1. PROGRAMMING MODE PROCEDURE
       
       The SuperStar OEM can be set to programming mode by hardware 
       or by software.


1.1   Programming mode setting by hardware

       a. At the 20 pin header connector (J1), tie pin 6 to the 5V supply

       b. Apply  either 5V  supply voltage to the SuperStar or a master
          reset pulse to the power control input pin (J1-5)
       
             Notes:

                1.  If an SuperStar Development Kit is used, set S1-5 to ON
                    then press the RESET button momentarely. 

                2.  The baud rate for programming mode setting by
                    hardware is 9600.  

             
1.2   Programming mode setting by software

       To set the programming mode by software, enter message 
       $PMCAG,006  when  in NMEA mode or message #112  when  in Binary
       mode. In either case the ALLSTAR will be forced  to enter  the
       programming mode at a specific baud rate.         

       The commands are sent at the operating baud rate.  Once
       these commands are decoded, the SuperStar will enter 
       programming mode at the specified baud rate, independently of the
       operating baud rate.
          
          Examples
             NMEA       :  $PMCAG,006,19.2*7A<CR><LF>
                                        
             CMC Binary :  0x01,0x70,0x8F,0x01,0x40,0x41,0x01


       The programming utility will send one of these commands
       to force the programming mode avoiding the need to tie the DISC_IP_1
       pin to 5 volts.  It is useful when the system does not provide
       external access to the DISC_IP_1 pin.

1.2.1  HOW TO VERIFY IF IN PROGRAMMING MODE OR NOT

       Once in programming mode, the SuperStar sends the following
       information to both communication ports :

       Ready !!! 
       wwwww

       Character "w" means waiting for data exchange and will be
       repeated until the programming utility starts to send data.

       The baud rate will be 9600 if the programming mode setting
       is done by hardware  and any other baud rate  if done  through 
       operational software command.


1.2.2  WHICH PORT TO USE

       The MAIN port or the AUXILIARY port can be used to program
       the SuperStar.  It is recommended to stop any communication on the
       unused  port for proper operation in programming mode.

1.3    ROGRAMMING UTILITY

       The programming utility "PROG.EXE" is used to :

         a.   Set the SuperStar to programming mode (if not  already done)
         b.   Erase the Operational S/W
         c.   Transfer the new operational S/W data to the SuperStar
         d.   Verify if the operation has been done successfully
	 e.   Only PROG.EXE can program the SuperStar and must used on a 32 bits platform.
              This is the default executable used by the GpsMon software.  

       Type "PROG" at the DOS prompt to get help information  on the
       utility :
       
             
       Example:

       C:\>PROG

       PROGRAMMING UTILITY VERSION : 2.207

       NOTE : this utility uses the serial port interrupt and is a 32BIT Application

         PROG FILENAME 1 0 2 0 <ENTER>
         parameter 1 : Operational binary file
         parameter 2 : PC Serial Port (1-10)
         parameter 3 : 0:CMC Binary 1:NMEA protocol
         parameter 4 : Synchronisation baud rate (300 to 19200)
         parameter 5 : Data transfer baud rate   (300 to 115200)

         Baud Rate Code :
                         0:38400 1:19200 2:9600 3:4800 4:2400
                         5: 1200 6:  600 7: 300 8: 56700 9:115200

         Parameters 3,4 and 5 are optional and their default values
            ALLSTAR    0 1 0  -> CMC BIN,  19200,   38400
            SUPERSTAR  0 2 9  -> CMC BIN,  9600,    115200


1.3.1  Programming Utility Algorithm

       The Programming utility  performs the following tasks :

          1.    Verify the parameter values
          2.    Verify the SuperStar binary file validity
          3.    Send the input message $PMCAG,006 (MODE = 1)   or
                message #112 (MODE =0) at the specified synchronisation
                baud rate
          4.    Wait for "w" character (@ SYNC_B_R)
          5.    Start & Verify Erase process
          6.    Change communication speed to the transfer baud rate
          7.    Start and Verify Programming process


1.4    Examples


   1.  If the SuperStar is forced into programming mode via the    
       DISC_IP_1 input pin, only the following command is necessary :

          PROG FILENAME  1 (if COMM 1 in use)
          (see Default Value for other parameters)

   2.  If the SuperStar is in NMEA mode @ 9600 :

          PROG FILENAME  1  1  2  0

       This forces the utility to send NMEA message $PMCAG,006
       on COMM 1 @ 9600 and to transfer the binary data @ 38400. 

   3.  If the SuperStar is in CMC Binary mode @ 19200 and want to 
       set the transfer baud rate @ 19200 :

          PROG FILENAME  1  0  1  1


  4.   If the SuperStar sends "w" character @ 4800 :

          PROG FILENAME 1 0 3 0

       In programming mode, the parameter 3 (Mode) is no more important
       and can be set to "0" or "1". But the synchronisation baud rate parameter 4 has to
       be set to the programming mode baud rate in use by the SuperStar
       ( sending "w" character) .