hi guys......;


i written c program for modbus tcpàip for reading and writing registers ubuntu. there is a compilation problem. please help. it showing no input files i included the library files of modbus . even then there is error. see the code below.


#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <modbus.h>
/* compiling : gcc master-program.c -o master-program.c -lmodbus */
main ()
modbus_t=modbus_connect;
stuct timeval old respose_timeout;
stuct timeval response_time out;
modbus*ctx;
set_slave;
rc;
wr;
int i;
uint16_t*tab_reg;
const uint16_t*ut_reg
modbus_error_recoverymode* error recovery_link
modbus_connect("128.2.2.1",302);
void modbus_set_socket("128.2.2.1",302);
server_socket=modbus_tcp_listen(ctx;nb_connection);
int modbus_set_slave(ctx,0*FF);
modbus_set_response_timeout(ctx,timeout);
/* Save original timeout */
modbus_get_response_timeout(ctx, &old_response_timeout);

/* Define a new and too short timeout! */
response_timeout.tv_sec = 0;
response_timeout.tv_usec = 0;
modbus_set_error_recovery(ctx,modbus_error_recover_link);
if (rc!== -1) {
printf("sterror recovery_failed%s/n"modbus_set_error recovery)(error);
rc_waiting for reply=0;
}
modbus_read_registers(ctx,ut_reg_adress,ut_reg_nb,tab_reg);
rc=ut_reg_nb;
if(rc=-1) {
fprintf(stderr,"%s/n");
modbus_sterror(errno);
return -1
}
for(i=0 i<rc;i++) {
printf("reg[%d]=%d (0x%X)\n", i, tab_reg[i], tab_reg[i]);
}
modbus_write_registers(ctx,ut_reg_adress,ut_reg_nb,ut_reg);
wr=modbus_write_registers;
if (wr=1) {
printf("modebus_write succesful%s/n");
("src[%d]=%d (0x%X)\n");
}
void modbus_close(ctx);

}