modbus communication problem with msp430f169??

[skarthikshines]

hi all.

i tried to interface my controller with PC by means of MOBDUS communication.. for that i googled and got the demo code from net .now the problem is my demo code containing some header files so i include the header file by project-->properties-->"C/C++ Buildi-->Include options......however now am getting the following error..


errors encountered during linking; "modbus.out" not built modbus line 0 1336988317355 1113
unresolved symbol cTISetDCO, first referenced in ./modbus.obj modbus line 0 1336988317355 1109
unresolved symbol eMBEnable, first referenced in ./modbus.obj modbus line 0 1336988317355 1110
unresolved symbol eMBInit, first referenced in ./modbus.obj modbus line 0 1336988317355 1111
unresolved symbol eMBPoll, first referenced in ./modbus.obj modbus line 0 1336988317355 1112

and mu code is


/* ----------------------- Platform includes --------------------------------*/
#include "port.h"
#include "dco.h"

/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"

/* ----------------------- Defines ------------------------------------------*/
#define REG_INPUT_START 1000
#define REG_INPUT_NREGS 4
#define REG_HOLDING_START 1000
#define REG_HOLDING_NREGS 130

/* ----------------------- Static variables ---------------------------------*/
static USHORT usRegInputStart = REG_INPUT_START;
static USHORT usRegInputBuf[REG_INPUT_NREGS];
static USHORT usRegHoldingStart = REG_HOLDING_START;
static USHORT usRegHoldingBuf[REG_HOLDING_NREGS];

/* ----------------------- Start implementation -----------------------------*/
int
main( void )
{
eMBErrorCode eStatus;
volatile USHORT usACLKCnt;

/* Stop Watchdog Timer. */
WDTCTL = WDTPW + WDTHOLD;

/* Delay for ACLK startup. */
for( usACLKCnt = 0xFFFF; usACLKCnt != 0; usACLKCnt-- );
if( cTISetDCO( TI_DCO_4MHZ ) == TI_DCO_NO_ERROR )
{
_EINT( );

/* Initialize Protocol Stack. */
if( ( eStatus = eMBInit( MB_RTU, 0x0A, 0, 38400, MB_PAR_EVEN ) ) != MB_ENOERR )
{
}
/* Enable the Modbus Protocol Stack. */
else if( ( eStatus = eMBEnable( ) ) != MB_ENOERR )
{
}
else
{
for( ;; )
{
( void )eMBPoll( );

/* Here we simply count the number of poll cycles. */
usRegInputBuf[0]++;
}
}
}
for( ;; );
}

eMBErrorCode
eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs )
{
eMBErrorCode eStatus = MB_ENOERR;
int iRegIndex;

if( ( usAddress >= REG_INPUT_START )
&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
{
iRegIndex = ( int )( usAddress - usRegInputStart );
while( usNRegs > 0 )
{
*pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
*pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
iRegIndex++;
usNRegs--;
}
}
else
{
eStatus = MB_ENOREG;
}

return eStatus;
}

eMBErrorCode
eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode )
{
eMBErrorCode eStatus = MB_ENOERR;
int iRegIndex;

if( ( usAddress >= REG_HOLDING_START ) &&
( usAddress + usNRegs <= REG_HOLDING_START + REG_HOLDING_NREGS ) )
{
iRegIndex = ( int )( usAddress - usRegHoldingStart );
switch ( eMode )
{
/* Pass current register values to the protocol stack. */
case MB_REG_READ:
while( usNRegs > 0 )
{
*pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] >> 8 );
*pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] & 0xFF );
iRegIndex++;
usNRegs--;
}
break;

/* Update current register values with new values from the
* protocol stack. */
case MB_REG_WRITE:
while( usNRegs > 0 )
{
usRegHoldingBuf[iRegIndex] = *pucRegBuffer++ << 8;
usRegHoldingBuf[iRegIndex] |= *pucRegBuffer++;
iRegIndex++;
usNRegs--;
}
}
}
else
{
eStatus = MB_ENOREG;
}
return eStatus;
}

eMBErrorCode
eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils, eMBRegisterMode eMode )
{
return MB_ENOREG;
}

eMBErrorCode
eMBRegDiscreteCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNDiscrete )
{
return MB_ENOREG;
}

kindly help me anyone to solve this problem...