Measurement Computing Personal Daq rev.6.0 - Manual (Page 137)

Personal Daq User’s Manual Appendix B, 887095 API Commands B-5
daqAdcRd
DLL Function daqAdcRd(DaqHandleT handle, DWORD chan, PVOID sample, daqAdcGain gain,
DWORD flags);
C daqAdcRd(DaqHandleT handle, DWORD chan, PVOID sample, DaqAdcGain gain,
DWORD flags);
Visual BASIC VBdaqAdcRdSingle&(ByVal handle&, ByVal chan&, sample!, ByVal gain&, ByVal flags&)
Delphi daqAdcRd(handle:DaqHandleT; chan:DWORD; sample:pointer; const gain:daqAdcGain;
flags:DWORD)
handle Handle to the device for which the ADC reading is to be acquired
chan A single channel number
sample A pointer to a value where an A/D sample is stored. Valid values: (See daqAdcSetTag)
gain The channel gain
Parameters
flags Channel configuration flags in the form of a bit mask
DerrFIFOFull Buffer Overrun
DerrInvGain Invalid gain
DerrInvChan Invalid channel
Returns
DerrNoError No Error
See Also daqAdcSetMux, daqAdcSetTrig, daqAdcSoftTrig
Program References None
Used With All devices
Description
daqAdcRd is used to take a single reading from the given local A/D channel. This function will use a software trigger to immediately
trigger and acquire one sample from the specified A/D channel.
•
The chan parameter indicates the channel for which to take the sample.
•
The sample parameter is a pointer to where the collected sample should be stored.
• The gain parameter indicates the channel’s gain setting.
• The flags parameter allows the setting of channel-dependent options. See ADC Flags Definition table for channel flags
definitions.