/*	**************************************************************  */
/*
 *	Module DAQCARD516
 *	This module contains I/O functions for the National Instruments
 *	DaqCard 516.                 
 *
 *	Zachary Wolf
 *	3/23/99
 */ 

/*	**************************************************************  */

/*	INCLUDES  */
#include <easyio.h>
#include <utility.h>
#include <gpib.h>
#include <formatio.h>
#include <ansi_c.h>
#include "daqcard516.h"

/*	**************************************************************  */

/*  PRIVATE FUNCTIONS  */
void daqcard516_message(char* msg);
void daqcard516_error(char* msg);

/*	**************************************************************  */

/*  PRIVATE GLOBAL VARIABLES  */
static char cmd[DAQCARD516_MAX_CMD + 1];
static char msg[DAQCARD516_MAX_CMD + 1];

/*	**************************************************************  */

/*	PUBLIC FUNCTIONS  */

/*	**************************************************************  */
/*
 *  daqcard516_init
 *  This function opens the device, queries for ID, and
 *  initializes the device to a known state.
 *
 *	Output:
 *	ID, identifier for future references to the device
 *
 *	Zachary Wolf
 *	3/23/99
 */

void daqcard516_init(int* ID)
{
    /* Declare variables */
    int dev_ID;
    int err;
    
    /* Message */
    //daqcard516_message("");
    //daqcard516_message("Initializing the DaqCard 516...");
    
    /* Initialize the card */
    
    /* Done */
    return;
}

/*	**************************************************************  */
/*
 *  daqcard516_get_chan_v
 *  This function gets a voltage from the specified analog input
 *	channel of the daqcard.
 *
 *	Input:
 *	chan, channel number (0 to 7)
 *
 *	Output:
 *	v, channel voltage (V)
 *
 *	Zachary Wolf
 *	3/29/99
 */

void daqcard516_get_chan_v(int chan, double* v)
{
    /* Declare variables */
    char chan_str[2];
    
    /* Check the channel number */
    if (chan < 0 || chan > 7)
    {
    	daqcard516_error("Improper channel number");
    	*v = 0.;
    	return;
    }
    
    /* Exit here if testing without hardware */
    #ifdef DUMMY_DEVICES
    	*v = 1.;
    	return;
    #endif
    
    /* Format the channel specification */
    Fmt(chan_str, "%s<%i", chan);
    
    /* Get the voltage */
	AISampleChannel (1, chan_str, DAQCARD516_ABS_VAL_MAX_VOLTAGE, -DAQCARD516_ABS_VAL_MAX_VOLTAGE, v);
    
    /* Done */
    return;
}

/*	**************************************************************  */
/*
 *  daqcard516_scan_v
 *  This function gets the voltages from a range of analog input
 *	channels of the daqcard.
 *
 *	Input:
 *	hi_chan, channel number to start the scan from, scans from hi_chan to 0 (0 to 7)
 *
 *	Output:
 *	v[hi_chan + 1], channel voltages (V)
 *
 *	Zachary Wolf
 *	3/29/99
 */

void daqcard516_scan_v(int hi_chan, double v[])
{
    /* Declare variables */
    char chan_str[20];
    int i;
    
    /* Check the channel number */
    if (hi_chan < 0 || hi_chan > 7)
    {
    	daqcard516_error("Improper channel number");
    	return;
    }
    
    /* Exit here if testing without hardware */
    #ifdef DUMMY_DEVICES
    	for (i = 0; i <= hi_chan; i++) v[i] = -1. - 0.01 * (double)rand() / RAND_MAX;
    	return;
    #endif
    
    /* Format the channel specification */
    Fmt(chan_str, "%s<%i:0", hi_chan);
    
    /* Get the voltage */
	AISampleChannels (1, chan_str, DAQCARD516_ABS_VAL_MAX_VOLTAGE, -DAQCARD516_ABS_VAL_MAX_VOLTAGE, v);
    
    /* Done */
    return;
}

/*	**************************************************************  */

/*	PRIVATE FUNCTIONS  */

/*	**************************************************************  */
/*
 *	daqcard516_message
 *  This function handles messages about the DaqCard516.
 *
 *	Input:
 *	message, string to display in standard I/O
 *
 *	Zachary Wolf
 *	3/23/99
 */

void daqcard516_message(char* message)
{
	/* Print the message */
	printf("%s\n", message);
	
	/* Done */
	return;
}

/*	**************************************************************  */
/*
 *	daqcard516_error
 *  This function handles error messages for the DaqCard 516.
 *
 *	Input:
 *	message, string to display in standard I/O
 *
 *	Zachary Wolf
 *	3/23/99
 */

void daqcard516_error(char* message)
{
	/* Declare variables */
	char buf[80];
	
	/* Notify the operator of the error */
	printf("\nDAQCARD516 ERROR: %s\n", message);
	Beep();
	Delay(.5);
	Beep();
	
	/* Terminate the program if the operator desires */
	printf("Press 0 ENTER to continue, anything else to terminate program: ");
	scanf("%s", buf);
	if (buf[0] == '0') return;
	else exit(0);
}