HP E1429A manual Local Bus Data Transfers

Local Bus Data Transfers

The following programs demonstrate:

∙how readings are transferred over the Local bus from a single digitizer to the HP E1488 memory card (LOCAL_AD.C)

∙how readings in digitizer memory are transferred over the Local bus from two digitizers to the HP E1488 memory card (LBUS2PST.C)

∙how readings from two digitizer A/Ds are transferred over the Local bus to the HP E1488 memory card (LBUSAUTO.C)

For completeness, the entire C language versions of these programs are listed. The programs are also contained on the example programs disk (HP p/n E1429-10302).

LOCAL_AD.C This program transfers readings from both digitizer channels to the HP E1488 memory card. The readings are tranferred directly from the digitizer A/Ds.

/* LOCAL_AD.C - This program demonstrates a Local bus data transfer */

/* directly (real time) from the HP E1429B digitizer A/Ds to the E1488A memory */ /* card. */

/* 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 ADDR_MEM 70903L /* I/O path from the PC to the memory card */

/* Function Prototypes */

void rst_clr(long address); void configure(void); void initiate(void);

void check_error(char *array, long address);

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Chapter 2 Using the Digitizer 83