SERIAL_SetControlLines
                                                Modifies the control lines (DTR/RTS).
                                                Synopsis
#include <serial.h> 
int SERIAL_SetControlLines( int port, 
			   unsigned char bitmap, 
			   int op);
                                                Parameters
                                                
                                                    
                                                    
                                                    
                                                        
                                                            | port | 
                                                            Serial port number (0 based). Specify port 0 to redirect the output to the HSM trace log | 
                                                        
                                                        
                                                            | bitmap | 
                                                            Bitmap of control lines to be modified . Input control lines are silently ignored | 
                                                        
                                                        
                                                            | op | 
                                                            One of MCL_OP_SET/MCL_OP_CLEAR  control lines specified in the bitmap parameter | 
                                                        
                                                    
                                                
                                                Return Code:
                                                
                                                    
                                                    
                                                    
                                                        
                                                    
                                                    
                                                        
                                                            | 0 | 
                                                            The function was successful. | 
                                                        
                                                        
                                                            | -1 | 
                                                            The function failed. | 
                                                        
                                                    
                                                
                                                Comments
#define MCL_DSR 0x01
#define MCL_DTR 0x02
#define MCL_RTS 0x04
#define MCL_CTS 0x08
#define MCL_DCD 0x10
#define MCL_RI  0x20
#define MCL_OP_SET 1
#define MCL_OP_CLEAR 2