ADLINK Technology NuDAQ PCI-9114DG, Руководство пользователя, Страница: 78 / 95

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C/C++ Library
Integer) As Integer
@ Argument
cardNo: the card number of PCI-9114 card initialized.
ad_data: the 16bits A/D converted value. The bit 0 of
ADData is the LSB of A/D converted data and the
bit 15 of ADData is the MSB of A/D converted data.
Please refer to section 5.1.5 for the relationship
between the voltage and the value.
@ Return Code
ERR_NoError
ERR_AD_AquireTimeOut
5.35 _9114_AD_Aquire_MUX
@ Description
This function is used to poll the A/D conversion data for PCI-9114. It
reads the A/D data when the data is ready.
@ Syntax
C/C++ (DOS)
U16 _9114_AD_Aquire_MUX ( U16 cardNo, U32 far *ad_data )
C/C++ (Windows 95)
U16 W_9114_AD_Aquire_MUX ( U16 cardNo, U32 far
*ad_data )
Visual Basic (Windows 95)
W_9114_AD_Aquire_MUX (ByVal cardNo As Integer, ad_data
As Long) As Integer
@ Argument
cardNo: the card number of PCI-9114 card initialized.
ad_data: the 32bits A/D converted value. The resolution
of A/D conversion data is 16-bit. The unsigned
integer data format of ADData is as follows:
Every 32-bit unsigned integer data:
bit 0…15: A/D converted data
bit 16, 17, …, 20 : converted channel no. The data
format can be referred to section 5.1.5 for
details.
@ Return Code
ERR_NoError
ERR_FIFO_Half_NotReady