#include <stdio.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "merlin_low.h"

Functions
int	mpxSet (const char command, const char value)
	Set a value for the specified command. More...

int	mpxGet (const char command, char value)
	Get a value for the specified command. More...

int	mpxCmd (const char *command)
	Send a cmd command. More...

int	mpxConnect (const char *host, int commandPort, int dataPort)
	Connect to the Labview program. More...

int	mpxIsConnected (int *conn)
	Test the connection status. More...

int	mpxDisconnect (void)
	Disconnect from the Labview program. More...

char *	mpxError (int error, char *errMsg)
	Return the error string for this error code. More...

int	mpxData (unsigned int *data)
	Read the latest data frame. More...

Function Documentation

◆ mpxCmd()

int mpxCmd ( const char * command )

Send a cmd command.

command - command name
Returns
int - error code

◆ mpxConnect()

int mpxConnect	(	const char *	host,
		int	commandPort,
		int	dataPort
	)

Connect to the Labview program.

This opens two TCP/IP sockets.

host - IP address
commandPort - port number to send commands
dataPort - port number to read data from
Returns
int - error code

◆ mpxData()

int mpxData ( unsigned int * data )

Read the latest data frame.

This blocks until either a frame is read or the socket is closed (either using mpxDisconnect or another mechanism).

The data buffer must be assigned by the user, and it won't be overwritten until this function is called again.

◆ mpxDisconnect()

int mpxDisconnect ( void )

Disconnect from the Labview program.

This closes the sockets opened using mpxConnect.

Returns: int - error code

◆ mpxError()

char* mpxError	(	int	error,
		char *	errMsg
	)

Return the error string for this error code.

int - error number
char pointer - pointer to char array. Must be at least MPX_MAXLINE bytes.

◆ mpxGet()

int mpxGet	(	const char *	command,
		char *	value
	)

Get a value for the specified command.

command - command name
value - returned value
Returns
int - error code

◆ mpxIsConnected()

int mpxIsConnected ( int * conn )

Test the connection status.

int pointer - 1=connected 0=not connected
Returns
error code.

◆ mpxSet()

int mpxSet	(	const char *	command,
		const char *	value
	)

Set a value for the specified command.

Interface library to merlin Labview system.

command - command name
value - value to set
Returns
int - error code

Functions