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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 Usin
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