I can not use functions for NI device

I found I can not use some functions when I tried to acquire data with ni product usb-6008.

for example,

s = daq.createSession('ni'),daq.getDevices,addAnalogInputChannel.

I can not use them, the error is: Undefined variable "daq" or class "daq.createSession". Undefined function or variable 'daq'.and so on. what's the matter?

Answer 1

[Walter Roberson]

You do not have the DAT installed, or not licensed, or you are using a version of MATLAB that does not support session based acquisition.

Which MATLAB release are you using?

Does

which -all daq

show any result?

[Walter Roberson]

The first support for session-based interfaces was R2010b, the release after the one you had. With your software you will need to use the legacy interface.

Note: not all NI devices were supported in R2010b; more devices were added with each release from R2010b.

[mado]

my version have daq toolbox however the functions are not existed when calling in command window , how could that be ?till now i didn't use any interface ( legacy or session) i just couldn't recall " daq " .

Answer 2

[mado]

it shows 'daq' not found. and i am using

    % MATLAB Version 7.10.0.499 (R2010a)
%MATLAB License Number: ••••••
%Operating System: Microsoft Windows 7 Version 6.1 (Build 7600)
%Java VM Version: Java 1.6.0_12-b04 with Sun Microsystems Inc. Java %HotSpot(TM) Client VM mixed mode
------------------------------------------------------------------------------
MATLAB                                                Version 7.10       (R2010a)
Simulink                                              Version 7.5        (R2010a)
Aerospace Blockset                                    Version 3.5        (R2010a)
Aerospace Toolbox                                     Version 2.5        (R2010a)
Control System Toolbox                                Version 8.5        (R2010a)
Curve Fitting Toolbox                                 Version 2.2        (R2010a)
DO Qualification Kit                                  Version 1.2        (R2010a)
Data Acquisition Toolbox                              Version 2.16       (R2010a)
Database Toolbox                                      Version 3.7        (R2010a)
Datafeed Toolbox                                      Version 3.5        (R2010a)
EDA Simulator Link                                    Version 3.1        (R2010a)
Embedded IDE Link                                     Version 4.1        (R2010a)
Filter Design HDL Coder                               Version 2.6        (R2010a)
Filter Design Toolbox                                 Version 4.7        (R2010a)
Financial Derivatives Toolbox                         Version 5.5.1      (R2010a)
Financial Toolbox                                     Version 3.7.1      (R2010a)
Fixed-Income Toolbox                                  Version 1.9        (R2010a)
Fixed-Point Toolbox                                   Version 3.1        (R2010a)
Fuzzy Logic Toolbox                                   Version 2.2.11     (R2010a)
Gauges Blockset                                       Version 2.0.5      (R2010a)
Global Optimization Toolbox                           Version 3.0        (R2010a)
IEC Certification Kit                                 Version 1.2        (R2010a)
Image Acquisition Toolbox                             Version 3.5        (R2010a)
Instrument Control Toolbox                            Version 2.10       (R2010a)
MATLAB Builder EX                                     Version 1.2.15     (R2010a)
MATLAB Builder JA                                     Version 2.1        (R2010a)
MATLAB Builder NE                                     Version 3.1        (R2010a)
MATLAB Compiler                                       Version 4.13       (R2010a)
MATLAB Distributed Computing Server                   Version 4.3        (R2010a)
MATLAB Report Generator                               Version 3.8        (R2010a)
Mapping Toolbox                                       Version 3.1        (R2010a)
Mixed-Signal Library                                  Version 2.0        (R2012a)
Model Predictive Control Toolbox                      Version 3.2        (R2010a)
Model-Based Calibration Toolbox                       Version 4.0        (R2010a)
Neural Network Toolbox                                Version 6.0.4      (R2010a)
OPC Toolbox                                           Version 2.1.5      (R2010a)
Optimization Toolbox                                  Version 5.0        (R2010a)
Parallel Computing Toolbox                            Version 4.3        (R2010a)
Partial Differential Equation Toolbox                 Version 1.0.16     (R2010a)
RF Blockset                                           Version 2.5.1      (R2010a)
RF Toolbox                                            Version 2.7        (R2010a)
Real-Time Windows Target                              Version 3.5        (R2010a)
Real-Time Workshop                                    Version 7.5        (R2010a)
Real-Time Workshop Embedded Coder                     Version 5.5        (R2010a)
Robust Control Toolbox                                Version 3.4.1      (R2010a)
Signal Processing Blockset                            Version 7.0        (R2010a)
Signal Processing Toolbox                             Version 6.13       (R2010a)
SimBiology                                            Version 3.2        (R2010a)
SimDriveline                                          Version 1.5.4      (R2010a)
SimElectronics                                        Version 1.4        (R2010a)
SimEvents                                             Version 3.1        (R2010a)
SimHydraulics                                         Version 1.7        (R2010a)
SimMechanics                                          Version 3.2        (R2010a)
SimPowerSystems                                       Version 5.2.1      (R2010a)
Simscape                                              Version 3.3        (R2010a)
Simulink 3D Animation                                 Version 5.1.1      (R2010a)
Simulink Control Design                               Version 3.1        (R2010a)
Simulink Design Optimization                          Version 1.1.1      (R2010a)
Simulink Design Verifier                              Version 1.6        (R2010a)
Simulink Fixed Point                                  Version 6.3        (R2010a)
Simulink HDL Coder                                    Version 1.7        (R2010a)
Simulink PLC Coder                                    Version 1.0        (R2010a)
Simulink Report Generator                             Version 3.8        (R2010a)
Simulink Verification and Validation                  Version 2.7        (R2010a)
Spline Toolbox                                        Version 3.3.8      (R2010a)
Spreadsheet Link EX                                   Version 3.1.1      (R2010a)
Stateflow                                             Version 7.5        (R2010a)
Stateflow Coder                                       Version 7.5        (R2010a)
Statistics Toolbox                                    Version 7.3        (R2010a)
Symbolic Math Toolbox                                 Version 5.4        (R2010a)
System Identification Toolbox                         Version 7.4        (R2010a)
SystemTest                                            Version 2.5        (R2010a)
Target Support Package                                Version 4.1        (R2010a)
xPC Target                                            Version 4.3        (R2010a)
xPC Target Embedded Option                            Version 4.3        (R2010a)
>>

[mado]

any help?

[Walter Roberson]

I already responded above. Your version does not support session-based interface at all.

Answer 3

[Eric Keller]

if you have a 32 bit system and can't upgrade matlab, use the legacy interface.