HP E1429A manual VMESEG1.C

4.System Configuration. The system configuration on which the program VME_REAL.C was developed is listed on page 1-10.

VME_SEG1.C

/* VME_SEG1.C - This program demonstrates how to transfer segmented readings */ /* over the VME bus. The program sets up 2 bursts (segments) of 10 pre-arm */

/* and 10 post-arm readings. A reading is taken each time the digitizer’s */

/* data register is accessed, and is transferred real time, over the VME bus. */ /* Before the next burst is taken, bit 1 of (offset) register 43h is */

/* monitored to determine when the next segment of readings can be taken. */

/* Include the following header files */

#include	<stdio.h>
#include	<stdlib.h>
#include	<string.h>
#include	<malloc.h>
#include	<cfunc.h>	/* This file is from the HP-IB Command Library Disk */
#define	ADDR 70905L	/* I/O path from the PC to the digitizer */

#define CMD_MOD 70900L /* Path from the PC to the Command Module */

/* Function Prototypes */

long get_base_addr(void); void rst_clr(void);

void ad_conf(void);

void ad_read(long base_addr); void check_error(char *func_tion);

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

void main(void)/* run the program */

{

long base_addr;	/* variable for digitizer A24 base address */
clrscr();
rst_clr();	/* reset the digitizer */
base_addr = get_base_addr();	/* function call to get digitizer */
	/* A24 base address */
ad_conf();	/* function call which configures the digitizer */
ad_read(base_addr);	/* function call which reads the digitizer */
	/* data register */

}

Chapter 2 Using the Digitizer 67