Digilent WaveForms User Manual

Page 5

WaveForms™ SDK Reference Manual

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Page 5 of 85

Each instrument is directly controlled using three types of functions in the API:

Note: Although there are multiple “Status” functions for each instrument, these functions are the only ones that actually read
data from the device.

There are a number of type definitions and corresponding constants in the dwf.h include file. The majority of them
are used as parameters. When a hardware device is opened, a handle is returned (HDWF), which is used to access
and finally close in all instrument API functions.

The following examples are provided in python and c++ language.

File

Description

Device_Enumeration

List the supported and connected devices. Opens them case are not
opened by other process and gets some information about them.

AnalogIO_AnalogDiscovery_SystemMonitor Reading the system minitor informations
AnalogIO_AnalogDiscovery_Power

Enable power supplies.

AnalogOut_Sine

Generate sine waveform on analog out channel.

AnalogOut_Sweep

Generate frequency sweep.

AnalogOut_Custom

Arbitrary waveform generation.

AnalogOut_Sync

How to synchronize the analog output channels

AnalogOutIn

Generate analog output sugnal and perfrom analog in acquisition.

AnalogIn_Sample

Ope the first device, configure analog in and read sample sample.

AnalogIn_Acquisition

Perform acquisition and plot data for first channel.

AnalogIn_Trigger

Perform triggered acquisition.

AnalogIn_Record

Performs recording of large number of samples.

DigitalIO

Drive and read digital io pins

DigitalOut_Pins

Generate pulse, random and custom signal on digital out pins.

DigitalOut_BinrayCounter

Generate binary counter

DigitalIn_Acquisition

Generate signals on digital out and perform acquisition on digital in.

DigitalIn_Record

Perform recording of of large number of digital in samples.

API Functions

Instrument Function

Example

Reset function

This function resets all of the instrument parameters
to default values.

FDwfAnalogInReset

FDwfAnalogOutReset

FDwfDigitalIOReset

Configure function

This function configures and/or starts the instrument.

FDwfAnalogInConfigure

FDwfAnalogOutConfigure

FDwfDigitalIOConfigure

Status function

This function polls and reads all information from the
instrument.

FDwfAnalogInStatus

FDwfAnalogOutStatus

FDwfDigitalIOStatus