Diamond Systems DS-MPE-DAQ0804 User manual

Brand: Diamond Systems

Model: DS-MPE-DAQ0804

Type: User manual

Universal Driver Software User Manual

DS-MPE-DAQ0804

PCIe Minicard Data Acquisition Module

For Version 7.0.0 and later

Revision A.0 May 2015

Revision

Date

Comment

A.0

5/13/2015

Initial release

FOR TECHNICAL SUPPORT Diamond Systems Corporation

PLEASE CONTACT: 555 Ellis Street

Mountain View, CA 94043 USA

support@diamondsystems.com Tel 1-650-810-2500

Fax 1-650-810-2525

www.diamondsystems.com

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 2

CONTENTS

1. Introduction ...................................................................................................................................................... 4

2. Hardware Overview .......................................................................................................................................... 5

2.1 Description .................................................................................................................................................... 5

2.2 Specifications ................................................................................................................................................ 5

3. General programming guidelines ................................................................................................................... 6

3.1 Initialization and Exit Function Calls ............................................................................................................. 6

3.2 Error Handling ............................................................................................................................................... 7

4. Universal Driver API Description .................................................................................................................... 8

4.1 DAQ0804ADSetSettings ............................................................................................................................... 8

4.2 DAQ0804ADSetTiming ................................................................................................................................. 9

4.3 DAQ0804ADSetChannelRange .................................................................................................................. 10

4.4 DAQ0804ADSetChannel............................................................................................................................. 11

4.5 DAQ0804ADTrigger .................................................................................................................................... 12

4.6 DAQ0804ADConvert ................................................................................................................................... 13

4.7 DAQ0804ADInt ........................................................................................................................................... 14

4.8 DAQ0804ADIntStatus ................................................................................................................................. 15

4.9 DAQ0804ADIntPause ................................................................................................................................. 16

4.10 DAQ0804ADIntResume .............................................................................................................................. 16

4.11 DAQ0804ADIntCancel ................................................................................................................................ 17

4.12 DAQ0804DASetSettings ............................................................................................................................. 17

4.13 DAQ0804DAConvert ................................................................................................................................... 18

4.14 DAQ0804DAConvertScan .......................................................................................................................... 19

4.15 DAQ0804DAFunction .................................................................................................................................. 20

4.16 DAQ0804DAUpdate .................................................................................................................................... 21

4.17 DAQ0804WaveformBufferLoad .................................................................................................................. 22

4.18 DAQ0804WaveformConfig ......................................................................................................................... 23

4.19 DAQ0804WaveformStart ............................................................................................................................ 24

4.20 DAQ0804WaveformPause .......................................................................................................................... 24

4.21 DAQ0804WaveformReset........................................................................................................................... 25

4.22 DAQ0804WaveformInc ............................................................................................................................... 26

4.23 DAQ0804DIOConfig .................................................................................................................................... 26

4.24 DAQ0804DIOConfigAll................................................................................................................................ 27

4.25 DAQ0804DIOOutputByte ............................................................................................................................ 27

4.26 DAQ0804DIOInputByte ............................................................................................................................... 28

4.27 DAQ0804DIOOutputBit ............................................................................................................................... 28

4.28 DAQ0804DIOInputBit .................................................................................................................................. 29

4.29 DAQ0804CounterSetRate .......................................................................................................................... 30

4.30 DAQ0804CounterConfig ............................................................................................................................. 31

4.31 DAQ0804CounterRead ............................................................................................................................... 32

4.32 DAQ0804CounterFunction .......................................................................................................................... 33

4.33 DAQ0804PWMConfig ................................................................................................................................. 34

4.34 DAQ0804PWMStart .................................................................................................................................... 35

4.35 DAQ0804PWMStop .................................................................................................................................... 35

4.36 DAQ0804PWMCommand ........................................................................................................................... 36

4.37 DAQ0804UserInterruptConfig ..................................................................................................................... 37

4.38 DAQ0804UserInterruptRun ......................................................................................................................... 38

4.39 DAQ0804UserInterruptCancel .................................................................................................................... 38

4.40 DAQ0804InitBoard ...................................................................................................................................... 39

4.41 DAQ0804FreeBoard ................................................................................................................................... 39

4.42 DAQ0804LED ............................................................................................................................................. 40

4.43 DAQ0804FIFOStatus .................................................................................................................................. 41

5. Universal Driver Application Description .................................................................................................... 42

5.1 DA Convert .................................................................................................................................................. 42

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 3

5.2 DA Convert Scan ........................................................................................................................................ 42

5.3 DA Waveform .............................................................................................................................................. 42

5.4 DIO .............................................................................................................................................................. 42

5.5 Counter Function ......................................................................................................................................... 42

5.6 Counter Set Rate ........................................................................................................................................ 43

5.7 PWM............................................................................................................................................................ 43

5.8 User Interrupt .............................................................................................................................................. 43

5.9 AD Sample .................................................................................................................................................. 43

5.10 AD Sample Scan ......................................................................................................................................... 43

5.11 AD Trigger ................................................................................................................................................... 43

5.12 AD Interrupt ................................................................................................................................................. 43

5.13 LED ............................................................................................................................................................. 44

6. Universal Driver Application Usage Instructions ....................................................................................... 45

6.1 DA Convert .................................................................................................................................................. 45

6.2 DA Concert Scan ........................................................................................................................................ 46

6.3 DA Waveform .............................................................................................................................................. 47

6.4 DIO .............................................................................................................................................................. 48

6.5 Counter Function ......................................................................................................................................... 49

6.6 Counter Set Rate ........................................................................................................................................ 49

6.7 PWM............................................................................................................................................................ 50

6.8 User Interrupt .............................................................................................................................................. 50

6.9 AD Sample .................................................................................................................................................. 51

6.10 AD Sample Scan ......................................................................................................................................... 51

6.11 AD Trigger ................................................................................................................................................... 52

6.12 AD Interrupt ................................................................................................................................................. 53

6.13 LED ............................................................................................................................................................. 53

7. Common Task Reference .............................................................................................................................. 54

7.1 Data Acquisition Feature Overview ............................................................................................................. 54

7.2 Data Acquisition Software Task Reference ................................................................................................ 57

7.3 Performing D/A Conversion ........................................................................................................................ 65

7.4 Performing D/A Conversion Scan ............................................................................................................... 66

7.5 Performing Digital IO Operations ................................................................................................................ 67

7.6 Performing PWM Operations ...................................................................................................................... 69

7.7 Performing Counter Function Operations ................................................................................................... 70

7.8 Performing Counter Set Rate Operation ..................................................................................................... 71

7.9 Performing User Interrupt Operations ......................................................................................................... 72

7.10 Generating D/A Waveform .......................................................................................................................... 74

7.11 Performing A/D Sample .............................................................................................................................. 76

7.12 Performing A/D Sample Scan ..................................................................................................................... 77

7.13 Performing A/D Trigger ............................................................................................................................... 78

7.14 Performing A/D interrupts............................................................................................................................ 78

7.15 Performing LED operations ......................................................................................................................... 82

8. Interface connector details ............................................................................................................................ 83

8.1 DS-MPE-DAQ-0804 Digital GPIO Connector – J2 ..................................................................................... 83

8.2 DS-MPE-DAQ-0804 Analog GPIO Connector – J3 .................................................................................... 83

Appendix: Reference Information ........................................................................................................................ 84

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 4

1. INTRODUCTION

This user manual contains all essential information about the Universal Driver 7.0 DS-MPE-DAQ0804

demo applications, programming guidelines and usage instructions. This manual also includes the

Universal Driver API descriptions with usage examples.

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 5

2. HARDWARE OVERVIEW

2.1 Description

DS-MPE-DAQ0804 is a rugged data acquisition PCIe MiniCard module consisting of both analog and

configurable digital I/O. The module is ideal for add-on data acquisition I/O expansion in embedded and

OEM applications. The PCIe MiniCard offers 8 single ended or four differential 16-bit analog inputs with

an aggregate sample rate of 100KHz maximum, 2048 sample A/D FIFO, four 16-bit analog outputs, and

14 digital I/O lines. The buffered digital I/O lines can be optionally configured as either pulse width

modulators or counter/timers.

Diamond’s Universal Driver 7.0 software provides driver support for all functions. The DS-MPE-DAQ0804

product comes with the PCIe MiniCard data acquisition I/O module, the CK-DAQ0804 cable kit, and a

hardware kit with jumpers and screws.

2.2 Specifications

 8 single ended / 4 differential 16-bit analog inputs

 100KHz maximum aggregate sample rate

 2048 sample A/D FIFO with programmable threshold

 4 analog input ranges: +/-10V, +/-5V, 0-10V, 0-5V

 4 16-bit analog outputs

 2 analog output ranges: 0-5V, 0-2.5V

 14 digital I/O lines, configurable as PWMs or counter/timers:

o 4 24-bit pulse width modulators

o 8 32-bit counter/timers

 +3.3VDC input power

 Latching connectors for increased ruggedness

 Support for Windows 7, XP, and Linux 3.2.x

 Universal Driver support for all functions

 PCIe MiniCard full size form factor (50.95mm x 30mm)

 Operating temperature of -40°C to +85°C

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 6

3. GENERAL PROGRAMMING GUIDELINES

3.1 Initialization and Exit Function Calls

All the demo applications begin with the following functions and should be called in sequence to initialize

the Universal Driver and the board. These functions should be called prior to calling any other DS-MPE-

DAQ0804 board specific functions.

1. dscInit ( ), this function initializes the Universal Driver

2. DAQ0804InitBoard(), this function initializes the DS-MPE-DAQ0804 module

3. DSCGetBoardInfo(), this function collects the board information from the Universal Driver and

returns the boardinfo structure to be used in the board specific functions

At the termination of any demo application, the user should call the dscfree() function to close the file

handles which are opened by the dscInit() function.

These function calls are important in initializing and freeing resources used by the driver. Following is an

example of the framework for an application using the driver:

#include "DSCUD_demo_def.h"

#include “mpedaq0804.h”

ERRPARAMS errorParams; //structure for returning error code and error string

DSCCBP dsccbp; //structure containing PCI board settings

BoardInfo *bi=NULL; //Structure containing board base address

int main()

{

if ( (dscInit ( DSC_VERSION ) != DE_NONE) )

{

dscGetLastError ( &errorParams );

printf ( "dscInit error: %s %s\n", dscGetErrorString (

errorParams.ErrCode ), errorParams.errstring );

return 0;

}

dsccbp.boardtype = DSC_ MPEDAQ0804;

dsccbp.pci_slot = 0;

if (DAQ0804InitBoard ( &dsccbp ) !=DE_NONE)

{

dscGetLastError (&errorParams);

printf ("DAQ0804InitBoard error: %s %s\n",

dscGetErrorString(errorParams.ErrCode), errorParams.errstring );

return 0;

}

bi = DSCGetBoardInfo ( dsccbp.boardnum );

/* Application code goes here */

dscFree ( );

return 0;

}

In the above example, DSC_VERSION, DSC_MPEDAQ0804, and DE_NONE are macros defined in the

included header file, dscud.h file.

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 7

3.2 Error Handling

All the Universal Driver functions provide a basic error handling mechanism that stores the last reported

error in the driver. If the application is not behaving properly, check for the last error by calling the function

dscGetLastError(). This function takes an ERRPARAMS structure pointer as its argument.

Nearly all the available functions in the Universal Driver API return a BYTE value upon completion. This

value represents an error code that will inform the user whether the function call was successful or not.

The user should always check if the result returns a DE_NONE value (signifying that no errors were

reported), as the following code illustrates:

BYTE result;

ERRPARAMS errparams;

if ((result = dscInit(DSC_VERSION)) != DE_NONE)

{

dscGetLastError (&errparams);

fprintf (stderr, "dscInit failed: %s (%s)\n",

dscGetErrorString(result), errparams.errstring);

return result;

}

In this code snippet, the BYTE result of executing a particular driver function (dscInit() in this case) is

stored and checked against the expected return value (DE_NONE). At any point of time, if a function

does not complete successfully, an error code other than DE_NONE will be generated, and the current

API function will be terminated. The function dscGetErrorString() provides a description of the error that

occurred.

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 8

4. UNIVERSAL DRIVER API DESCRIPTION

4.1 DAQ0804ADSetSettings

Function Definition

BYTE DAQ0804ADSetSettings (BoardInfo* bi, DAQ0804ADSETTINGS* settings);

Function Description

This function configures the A/D input range, channel register, and scan settings.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAQ0804ADSETTINGS

Structure with following member variables,

Range - 0-1; 0 = 5V, 1 = 10V

Polarity - 0-1; 0 = bipolar, 1 = unipolar

Sedi - 0-1; 0 = single-ended, 1 = differential

Sign - 0-1; in Diff mode only: 0 = even channel is high;

1 = odd channel is high

Lowch - low channel, 0-7 for SE mode or 0-3 for Diff mode

Highch - high channel, 0-7 for SE mode or 0-3 for Diff mode

ADClock - 0-3: 0 = command bit ADSTART = 1; 1 = falling edge

of DIO bit 19; 2 = rising edge of output of counter 0;

3 = rising edge of output of counter 1

ScanEnable - 0 = disable, 1 = enable scan mode

ScanInterval - 0 = 10us, 1 = 12.5us, 2 = 20us, 3 = programmable;

used only if ScanEnable = 1

ProgInt - 100-255, used only if ScanInterval = 3; interval is this

value times 100ns

Return Value

Error code or 0

Usage Example

To configure channel zero in 0-5v with single ended and scan disabled,

DAQ0804ADSETTINGS dscadsettings;

dscadsettings.Polarity = 1;

dscadsettings.Range = 0;

dscadsettings.Sedi = 0;

dscadsettings.Highch = 0;

dscadsettings.Lowch = 0;

dscadsettings.ADClock = 0;

dscadsettings.ScanEnable = 0;

DAQ0804ADSetSettings (bi, &dscadsettings);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 9

4.2 DAQ0804ADSetTiming

Function Definition

BYTE DAQ0804ADSetTiming (BoardInfo* bi, DAQ0804ADSETTINGS* settings);

Function Description

This function configures the A/D clock source and scan settings.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAQ0804ADSETTINGS

Structure with following member variables,

Range - 0-1; 0 = 5V, 1 = 10V

Polarity - 0-1; 0 = bipolar, 1 = unipolar

Sedi - 0-1; 0 = single-ended, 1 = differential

Sign - 0-1; in Diff mode only: 0 = even channel is high;

1 = odd channel is high

Lowch - low channel, 0-7 for SE mode or 0-3 for Diff mode

Highch - high channel, 0-7 for SE mode or 0-3 for Diff mode

ADClock - 0-3: 0 = command bit ADSTART = 1; 1 = falling edge

of DIO bit 19; 2 = rising edge of output of counter 0;

3 = rising edge of output of counter 1

ScanEnable - 0 = disable, 1 = enable scan mode

ScanInterval - 0 = 10us, 1 = 12.5us, 2 = 20us, 3 = programmable;

used only if ScanEnable = 1

ProgInt - 100-255, used only if ScanInterval = 3; interval is this

value times 100ns

Return Value

Error code or 0.

Usage Example

To configure channels 0-7 in 0-5v with single ended, and programmable scan interval 100, or 10usec:

DAQ0804ADSETTINGS dscadsettings;

dscadsettings.Polarity = 1;

dscadsettings.Range = 0;

dscadsettings.Sedi = 0;

dscadsettings.Highch = 0;

dscadsettings.Lowch = 0;

dscadsettings.ADClock = 0;

dscadsettings, ScanInterval = 3;

dscadsettings; ProgInt = 100;

DAQ0804ADSetTiming (bi, &dscadsettings);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 10

4.3 DAQ0804ADSetChannelRange

Function Definition

BYTE DAQ0804ADSetChannelRange (BoardInfo* bi, DAQ0804ADSETTINGS* settings);

Function Description

This function configures the A/D input range. All other settings remain the same. The user is expected to

know whether the board is set for a single-ended or differential mode and the odd/sign is set for

differential channel polarity.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAQ0804ADSETTINGS

Structure with following member variables,

Range - 0-1; 0 = 5V, 1 = 10V

Polarity - 0-1; 0 = bipolar, 1 = unipolar

Sedi - 0-1; 0 = single-ended, 1 = differential

Sign - 0-1; in Diff mode only: 0 = even channel is high;

1 = odd channel is high

Lowch - low channel, 0-7 for SE mode or 0-3 for Diff mode

Highch - high channel, 0-7 for SE mode or 0-3 for Diff mode

ADClock - 0-3: 0 = command bit ADSTART = 1; 1 = falling edge

of DIO bit 19; 2 = rising edge of output of counter 0;

3 = rising edge of output of counter 1

ScanEnable - 0 = disable, 1 = enable scan mode

ScanInterval - 0 = 10us, 1 = 12.5us, 2 = 20us, 3 = programmable;

used only if ScanEnable = 1

ProgInt - 100-255, used only if ScanInterval = 3; interval is this

value times 100ns

Return Value

Error code or 0.

Usage Example

To configure channel 0 to 3 in 0-5v with single ended and scan disabled;

DAQ0804ADSETTINGS dscadsettings;

dscadsettings.Lowch = 0;

dscadsettings.Highch = 3;

DAQ0804ADSetChannelRange (bi, &dscadsettings);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 11

4.4 DAQ0804ADSetChannel

Function Definition

BYTE DAQ0804ADSetChannel (BoardInfo* bi, int Channel);

Function Description

This function configures the A/D circuit for a single channel. All other settings remain the same. The user

is expected to know whether the board is set for single-ended or differential mode and the odd/sign

setting for differential channel polarity. This function is identical to SetRange except that the same

channel is used for the low and high settings, so that the A/D will continuously sample the same channel

on successive A/D conversions.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Channel

Input channel, 0-7 for SE mode or 0-3 for Diff mode

Return Value

Error code or 0.

Usage Example

To set the channel number to 2,

int channel ;

Channel = 2;

DAQ0804ADSetChannel (bi,Channel);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 12

4.5 DAQ0804ADTrigger

Function Definition

BYTE DAQ0804ADTrigger (BoardInfo* bi, unsigned* Sample);

Function Description

This function executes one A/D conversion or scan using the current board settings. It does not perform

any configuration of the board but rather uses the current settings. If the board is configured for sample

mode (SCANEN = 0), then one A/D conversion will be performed and stored in the sample buffer. If the

board is configured for scan mode (SCANEN = 1), then one scan of all channels between ‘Highch’ and

‘Lowch’ will be performed and all samples will be stored in the sample buffer.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Sample

pointer to an array of size 8 to hold the return values

Return Value

Error code or 0.

Usage Example

To read samples from 0

channel,

unsigned long sample; // sample reading

DAQ0804ADSETTINGS* dscadsettings;

dscadsettings.Polarity = 1;

dscadsettings.Range = 0;

dscadsettings.Sedi = 0;

dscadsettings.Highch = 0;

dscadsettings.Lowch = 0;

dscadsettings.ADClock = 0;

ScanEnable = 0;

DAQ0804ADSetTiming (bi, dscadsettings);

DAQ0804ADTrigger (bi, &sample);

printf (“The samples from channel 0 : 0x%X\n”,sample);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 13

4.6 DAQ0804ADConvert

Function Definition

BYTE DAQ0804ADConvert (BoardInfo* bi, DAQ0804ADSETTINGS* settings, unsigned* Sample);

Function Description

This function configures the A/D input range, channel register, and scan settings as requested by the

user, and then sets the timing to be non-turbo, single-channel (non-scan), and software trigger. Then it

takes a single A/D sample of a single channel, triggers the A/D, and reads back the A/D sample value.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAQ0804ADSETTINGS

Structure with following member variables,

Range - 0-1; 0 = 5V, 1 = 10V

Polarity - 0-1; 0 = bipolar, 1 = unipolar

Sedi - 0-1; 0 = single-ended, 1 = differential

Sign - 0-1; in Diff mode only: 0 = even channel is high;

1 = odd channel is high

Lowch - low channel, 0-7 for SE mode or 0-3 for Diff mode

Highch - high channel, 0-7 for SE mode or 0-3 for Diff mode

ADClock - 0-3: 0 = command bit ADSTART = 1; 1 = falling edge

of DIO bit 19; 2 = rising edge of output of counter 0;

3 = rising edge of output of counter 1

ScanEnable - 0 = disable, 1 = enable scan mode

ScanInterval - 0 = 10us, 1 = 12.5us, 2 = 20us, 3 = programmable;

used only if ScanEnable = 1

ProgInt - 100-255, used only if ScanInterval = 3; interval is this

value times 100ns

Sample

Return value; may be interpreted as unsigned or signed int depending on the

input range

Return Value

Error code or 0.

Usage Example

To read a single sample value from channel 0, by configuring the A/D input range as 0-5v and single

ended,

DAQ0804ADSETTINGS dscadsettings;

unsigned int sample; // sample reading

dscadsettings.Polarity = 1;

dscadsettings.Range = 0;

dscadsettings.Sedi = 0;

dscadsettings.Highch = 0;

dscadsettings.Lowch = 0;

dscadsettings.ADClock = 0;

dscadsettings.ScanEnable = 0;

DAQ0804ADConvert (bi, &dscadsettings, &sample);

printf (“The samples from channel 0 : 0x%X\n”,sample);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 14

4.7 DAQ0804ADInt

Function Definition

BYTE DAQ0804ADInt (BoardInfo* bi, DAQ0804ADINT* DAQ0804adint);

Function Description

This function enables A/D interrupt operation using the current analog input settings. It configures the

FIFO but leaves all other settings alone.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAQ0804ADINT

Structure with following member variables,

FIFOEnable - 0 = disable; interrupt occurs after each sample / scan;

1 = enable; interrupt occurs on FIFO threshold flag

FIFOThreshold - 0-2048, indicates level at which FIFO will generate an

interrupt (if FIFOEnable = 1)

Cycle - 0 = one shot operation; 1 = continuous operation

NumConversions - if Cycle = 0 this is the number of samples / scans to

acquire; if Cycle = 1 this is the size of the circular

buffer in samples / scans

ADBuffer - pointer to A/D buffer to hold the samples

Return Value

Error code or 0.

Usage Example

To enable the A/D interrupt operation,

DAQ0804ADINT dscIntSettings;

dscIntSettings.NumConversions = 1000;

dscIntSettings.Cycle = 1;

dscIntSettings.FIFOEnable = 1;

dscIntSettings.FIFOThreshold = 1000;

dscIntSettings.ADBuffer = (SWORD*) malloc (sizeof (SWORD)*

dscIntSettings.NumConversions);

DAQ0804ADInt (bi, &dscIntSettings);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 15

4.8 DAQ0804ADIntStatus

Function Definition

BYTE DAQ0804ADIntStatus (BoardInfo* bi, DAQ0804ADINTSTATUS* intstatus);

Function Description

This function returns the interrupt routine status including running or not running, number of conversions

completed, cycle mode, FIFO status, and FIFO flags.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAQ0804ADINTSTATUS

Structure with following member variables,

OpStatus - 0 = not running, 1 = running

NumConversions - Number of conversions since interrupts started

Cycle - 0 = one-shot operation, 1 = continuous operation

FIFODepth - Current FIFO depth pointer

OF, FF, TF, EF - FIFO flags

Return Value

Error code or 0.

Usage Example

To read the interrupt routine status,

DAQ0804ADINTSTATUS intstatus;

DAQ0804ADIntStatus (bi, &intstatus)

printf ("No of A/D conversions completed %d\n",intstatus.NumConversions);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 16

4.9 DAQ0804ADIntPause

Function Definition

BYTE DAQ0804ADIntPause (BoardInfo* bi);

Function Description

This function pauses A/D interrupts by turning off the interrupt enable and stopping the A/D clock. This

holds the A/D channel counter and FIFO at their current positions.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Return Value

Error code or 0.

Usage Example

To pauses the A/D interrupts by turning off the interrupt enable and stopping the A/D clock,

DAQ0804ADIntPause (bi);

4.10 DAQ0804ADIntResume

Function Definition

BYTE DAQ0804ADIntResume (BoardInfo* bi);

Function Description

This function resumes A/D interrupts from the point at which they were paused.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Return Value

Error code or 0.

Usage Example

To resumes the A/D interrupts from the point at which they were paused,

DAQ0804ADIntResume (bi);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 17

4.11 DAQ0804ADIntCancel

Function Definition

BYTE DAQ0804ADIntCancel (BoardInfo* bi);

Function Description

This function stops A/D interrupts by turning off the interrupt enable, stopping the A/D clock, and

removing the A/D interrupt handler.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Return Value

Error code or 0.

Usage Example

To stops A/D interrupts by turning off the interrupt,

DAQ0804ADIntCancel (bi);

4.12 DAQ0804DASetSettings

Function Definition

BYTE DAQ0804DASetSettings (BoardInfo* bi, int Range, int Sim);

Function Description

This function is designed to work with the AD5686R D/A converter. This function sets the D/A output

ranges, the data format, and the update mode.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Range

0 = 0-2.5V, 1 = 0-5V

Sim

0 = Individual DAC update mode, 1 = simultaneous update mode

Return Value

Error code or 0.

Usage Example

To set the range as 0 – 5v with simultaneous update mode,

int Range;

int sim;

Range = 1;

Sim = 1;

DAQ0804DASetSettings (bi,Range,sim);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 18

4.13 DAQ0804DAConvert

Function Definition

BYTE DAQ0804DAConvert (BoardInfo* bi, int Channel, unsigned int DACode);

Function Description

This function outputs a value to a single D/A channel. The output range must be previously set with

DAQ0804DASetSettings().

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

Channel

0-3

DACode

0-65535

Return Value

Error code or 0.

Usage Example

To set channel zero with 5V,

Channel = 0;

DACode = 65535;

DAQ0804DAConvert (bi,channel,DACode);

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 19

4.14 DAQ0804DAConvertScan

Function Definition

BYTE DAQ0804DAConvertScan (BoardInfo* bi, int* ChannelSelect, int* DACodes);

Function Description

This function outputs multiple values to multiple D/A channels. The output ranges must be previously set

with DAQ0804DASetSettings().

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

ChannelSelect[4]

Array of 4 flags: 0 = don’t update channel n, 1 = update channel n

DACodes[4]

Array of 4 D/A values, 0-65535; values where ChannelSelect[n] = 0 are

Ignored

Return Value

Error code or 0.

Usage Example

To update channel 0, 1 with dacode 65535, 32768 respectively and not change any other channel,

ChannelSelect = (int*) malloc (sizeof (int) * 4);

DACodes = (unsigned int*) malloc (sizeof (unsigned int) * 4);

ChannelSelect [0] = 1;

DACodes [0] = 65535;

ChannelSelect [1] = 1;

DACodes [1] = 32768;

DAQ0804DAConvertScan (bi,ChannelSelect, DACodes );

DS-MPE-DAQ0804 Universal Driver User Manual A.0 www.diamondsystems.com Page 20

4.15 DAQ0804DAFunction

Function Definition

BYTE DAQ0804DAFunction (BoardInfo* bi, unsigned DAData, int DACommand);

Function Description

This function enables the programmer to control the D/A chip directly to implement commands that are

not supported by other Universal Driver functions.

Function Parameters

Name

Description

BoardInfo

The handle of the board to operate on

DAData

16-bit value in straight binary 0000-FFFF

DACommand

8-bit value in straight binary 0-FF

Return Value

Error code or 0.

Usage Example

To perform D/A convert operation by using DAQ0804DAFunction,

DACode = 65535;

Channel = 2;

DAcommand =0x10 + (1<<channel); //DA update command

DAQ0804DAFunction (bi,DACode,DAcommand);

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Diamond Systems DS-MPE-DAQ0804 User manual

Diamond Systems DS-MPE-DAQ0804 User manual

Diamond Systems DS-MPE-DAQ0804 User manual

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