Re: atModem exception thrown is divisor is changed

From the previous stack trace is was clear that two calls were being 
made to
setSerial.  The first setSerial( int, int, int ) as shown in my sample 
code used to make
the call and then a call from within TINIOS.java to the 'real' 
setSerial( .... )
member.

The code hangs after printing - setSerial - before SERIAL_EX_SET_DIVISOR 
native

 System.out.println("setSerial - before SERIAL_EX_SET_DIVISOR native");

 return (tinios_DispatchNative( DISPATCH_EXTERNAL_SET_SERIAL_DIVISOR, 
dispatchBuffer) );

So, the problem seems obvious that the tinios_DispatchNative( 
DISPATCH_EXTERNAL_SET_SERIAL_DIVISOR, dispatchBuffer) is the cause of 
the exception. No?

Two days and zero headway on this issue.


Peter Bauer
ICT Computing, Inc.



public static synchronized int setSerial(int cmd, int port, byte [] 
arr) throws javax.comm.UnsupportedCommOperationException
  {
     System.out.println("setSerial - A");

     switch(cmd)
     {
     case SERIAL_SET_ENABLE:
        switch (port)
        {
        case 1:
      enableSerialPort1(arr[0]==1);
      break;
    case 2:
    case 3:
          setExternalSerialPortEnable(port,arr[0]==1);
      break;
    default:
      throw new javax.comm.UnsupportedCommOperationException("Operation 
not supported");
    }
    return 0;

     case SERIAL_GET_ENABLE:
        return (getExternalSerialPortEnable(port))?1:0;

     case SERIAL_EX_SET_SEARCH_ENABLE:
        setExternalSerialPortEnable(port,arr[0] == 1);
    return 0;

     case SERIAL_EX_GET_SEARCH_ENABLE:
        return (getExternalSerialPortEnable(port))?1:0;

     case SERIAL_EX_SET_PORT_ADDRESS:
        int addy =  (arr[0] & 0xFF) |
                   ((arr[1] & 0xFF) << 8) |
                   ((arr[2] & 0xFF) << 16) |
                   ((arr[3] & 0xFF) << 24);
        setExternalSerialPortAddress(port, addy);
        return 0;

     case SERIAL_EX_GET_PORT_ADDRESS:
        return (getExternalSerialPortAddress(port));

     case SERIAL_SET_BOOT_MESSAGE_STATE:
        setSerialBootMessagesState(arr[0] == 1);
        return 0;

     case SERIAL_GET_BOOT_MESSAGE_STATE:
        {
            byte ret = sys_getDebugMessageStateNative();

        return ((ret & BITBANG_DEBUG_MESSAGE_MASK) == 0)?1:0 ;
    }


     case SERIAL_SET_DEBUG_MESSAGE_STATE:
        setDebugMessagesState(arr[0] == 1);
    return 0;
     case SERIAL_GET_DEBUG_MESSAGE_STATE:
        {
           byte ret = sys_getDebugMessageStateNative();

       return ((ret & SERIAL_DEBUG_MESSAGE_MASK) == 0)?1:0 ;
    }

     case SERIAL_SET_RTSCTS_FLOW_CONTROL:
        setRTSCTSFlowControlEnable(port, arr[0]==1);
    return 0;
     case SERIAL_GET_RTSCTS_FLOW_CONTROL:
        return (getRTSCTSFlowControlEnable(port))?1:0;

     case SERIAL_EX_GET_DIVISOR:
        {
           byte[] dispatchBuffer = new byte [4];

           dispatchBuffer [0] = ( byte ) (port & 0xFF) ;

           return (tinios_DispatchNative(
               DISPATCH_EXTERNAL_GET_SERIAL_DIVISOR, dispatchBuffer) );
        }
     case SERIAL_EX_SET_DIVISOR:
        {
           byte[] dispatchBuffer = new byte [4];

           dispatchBuffer [0] = ( byte ) (port & 0x0ff);
           dispatchBuffer [1] = arr[0];
           dispatchBuffer [2] = arr[1];

           System.out.println("setSerial - before SERIAL_EX_SET_DIVISOR 
native");

           return (tinios_DispatchNative(
               DISPATCH_EXTERNAL_SET_SERIAL_DIVISOR, dispatchBuffer) );
        }

     default:
        return -1;
     }
  }
   /** setSerial is used to set serial port options in TINIOS
     that can't be set using javax.comm. This is a helper
     version for serial commands requireing boolean
     arguments like SERIAL_SET_ENABLE.
     @param cmd The serial port command to be executed
     @param port The serial port to reference
     @param arr For boolean operations, pass true or false.
     @see com.dalsemi.system.TINIOS#setSerial(int,int,byte[])
   */

  public static synchronized int setSerial(int cmd, int port, boolean 
arr) throws javax.comm.UnsupportedCommOperationException
  {
     System.out.println("setSerial - B");

     setSerArgs[0] = (byte)((arr)?1:0);
     return setSerial(cmd,port,setSerArgs);
  }

   /** setSerial is used to set serial port options in TINIOS
     that can't be set using javax.comm. This is a helper
     version for serial commands requireing integer
     arguments like SERIAL_EX_SET_DIVISOR.
     @param cmd The serial port command to be executed
     @param port The serial port to reference
     @param arr Integer argument to the command.
     @see com.dalsemi.system.TINIOS#setSerial(int,int,byte[])
   */

  public static synchronized int setSerial(int cmd, int port, int arr) 
throws javax.comm.UnsupportedCommOperationException
  {
     System.out.println("setSerial - C");

     setSerArgs[0] = (byte)(arr & 0xFF);
     setSerArgs[1] = (byte)((arr >> 8) & 0xFF);
     setSerArgs[2] = (byte)((arr >> 16) & 0xFF);
     setSerArgs[3] = (byte)((arr >> 24) & 0xFF);

     return setSerial(cmd,port,setSerArgs);
  }

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