Programmer's Guide

Programmer's Guide

Content1. 2. BRIEF ............................................................................................................................................1 INTERFACE DESCRIPTION.....................................................................................................2 2.1. 2.2. 2.3. 2.4. 2.5. 2.6. 2.7. 2.8. 2.9. 2.10. 2.11. 2.12. DDSSEARCH ..........................................................................................................................2 DDSSETFREQUENCY .............................................................................................................2 DDSGETMEASURE ................................................................................................................2 DDSSETSINGLEWAVE............................................................................................................3 DDSRESETCOUNTER .............................................................................................................3 DDSSETTRIGGER ..................................................................................................................3 DDSGETDIGITALIN ...............................................................................................................4 DDSSETDIOMODE ................................................................................................................4 DDSSETDIGITALOUT ............................................................................................................4 DDSDOWNLOAD....................................................................................................................5 DDSCHECK............................................................................................................................5 DDSSETPOWERONOUTPUT ...................................................................................................5Programmer’s Guide1.BriefDDS-3X25 USB offers the agile interface of second time development for users, and offers examples for many languages and the editor .Users can use the functions interface in DDS-3X25Dll.DLL to implement all functions of DDS-3X25 USB, and to be inserted into other auto-measuring systems. Let’s explain every function interface using VC6.0. Interface of any language implement complete same functions. It’s used to reference. The declaration of interface can reference second time development that our company offers for you. Users pay attention to the questions of the variable type and address’s transfer.1Programmer’s Guide2.Interface Description2.1. DDSSearchDescription: Function: Parameters: Return: Search the current computer-connected devices, and initialization.. Int DDSSearch() NULL The number of devices connected to computer.2.2. DDSSetFrequencyDescription: Function: Set the frequency of waveform BOOL DDSSetFrequency( int index, double frequency, int* wavePointNum, int* TNum ); int index: device serial number double frequency: frequency int* wavePointNum: the number of points of the current waveform to download int* TNum: The periods of the waveform to download If return true ,it express successful operation， else express failing operation.Parameters:Return:2.3. DDSGetMeasureDescription: Function: Get the value of frequency or counter BOOL DDSGetMeasure( int index, BOOL bFreq, double* measure )