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Programming via GPIB and VXI 4
Agilent VISA User’s Guide 103
/*
================================================
=
Using viPeek
================================================
*/
Read instrument id register contents */
viPeek16 (vi, address, &id_reg);
/* Read device type register contents
ViAddr is defined as a (void *) so we must
cast it to something else in order to do
pointer arithmetic. */
viPeek16 (vi, (ViAddr)((ViUInt16 *)address +
0x01),&devtype_reg);
/* Print results */
printf (" viPeek16: ID Register = 0x%4X\n",
id_reg);
printf (" viPeek16: Device Type Register =
0x%4X\n",devtype_reg);
/* Use direct memory dereferencing if
supported */
viGetAttribute( vi, VI_ATTR_WIN_ACCESS,
&accessMode );
if ( accessMode == VI_DEREF_ADDR ) {
/* assign pointer to variable of correct
type */
memPtr16 = (unsigned short *)address;
/* do the actual memory reads */
id_reg = *memPtr16;
devtype_reg = *(memPtr16+1);
/* Print results */
printf ("dereference: ID Register =
0x%4X\n",id_reg);
printf ("dereference: Device Type Register
=0x%4X\n", devtype_reg);
}
- Agilent VISA 1
- User’s Guide for IO 1
- Libraries Suite 15.5 1
- Agilent VISA User’s Guide 3
- 4 Agilent VISA User’s Guide 4
- Agilent VISA User’s Guide 5 5
- 6 Agilent VISA User’s Guide 6
- Introduction 7
- What’s in This Guide? 8
- VISA Overview 9
- VISA Support 10
- VISA Documentation 10
- Introduction 1 11
- Agilent VISA User’s Guide 11 11
- Contacting Agilent 12
- Agilent Technologies 13
- Linking to VISA Libraries 14
- Sample VISA Program (C/C++) 15
- C/C++ Sample Program Contents 17
- Format Conversion Commands 19
- Numeric Arrays 19
- Steps to Running the Program 20
- Sample Program Source Code 21
- Sample Program Contents 23
- 24 Agilent VISA User’s Guide 24
- Logging Error Messages 25
- Programming with VISA 27
- VISA Resources and Attributes 28
- VISA Attributes 29
- Using Sessions 30
- Opening a Session 31
- 3 Programming with VISA 32
- Addressing a Session 33
- Programming with VISA 3 35
- Agilent VISA User’s Guide 35 35
- Closing a Session 37
- Searching for Resources 37
- Sending I/O Commands 40
- Using Formatted I/O 41
- Using Non-Formatted I/O 44
- Using Events and Handlers 46
- Events that can be Enabled 47
- Agilent VISA User’s Guide 49 49
- Agilent VISA User’s Guide 51 51
- Agilent VISA User’s Guide 53 53
- Using the Callback Method 54
- Installing Handlers 55
- Using the Queuing Method 62
- Enabling Events 63
- Trapping Errors 68
- Exception Events 69
- Using Locks 74
- VISA Lock Types 75
- General Interface Information 80
- GPIB Interfaces Overview 81
- 82350 GPIB Card #1 82
- Windows PC 82
- GPIB InstrumentsGPIB Cable 82
- 82350 GPIB Card #2 82
- Agilent VISA User’s Guide 83 83
- VXI Interfaces Overview 84
- GPIB-VXI Interfaces Overview 85
- GPIB-VXI (E1406A) Interfaces 86
- Programming the Registers 88
- Using viIn and viOut 89
- Using viMoveIn and viMoveOut 90
- Functions 91
- Mapping Memory Space 95
- Sample: Using viPeek16 96
- Using Low-Level viPeek/viPoke 100
- Using High-Level viIn/viOut 101
- Sample: Using VXI Memory I/O 102
- Memory I/O Services 106
- MEMACC Attribute Descriptions 109
- VI_ATTR_WIN_ACCESS Settings 113
- Setting the VXI Trigger Line 114
- 116 Agilent VISA User’s Guide 116
- Programming via GPIB and VXI 116
- Programming via LAN 117
- Connection 118
- Gateway Operation 119
- 5 Programming via LAN 120
- Programming via USB 127
- USB Interfaces Overview 128
- 6 Programming via USB 130
- Glossary 131
- Windows notification area 143
- 144 Agilent VISA User’s Guide 144
- Agilent VISA User’s Guide 145 145
- 146 Agilent VISA User’s Guide 146
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