Digilent WaveForms - Manual (Page 54)

WaveForms™ SDK Reference Manual
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 54 of 85
FDwfAnalogIOChannelNodeSetInfo(HDWF hdwf,
int idxChannel, int idxNode,
double *pmin, double *pmax, int *pnSteps)
Parameters:
-
hdwf – Open interface handle on a device.
- idxChannel – Analog I/O channel index of the device.
- idxNode – Node index.
- pmin – Minimum settable value.
- pmax – Maximum settable value.
- pnSteps – Number of steps between minimum and maximum values.
These functions return node value limits. Since a Node can represent many things (Power supply, Temperature
sensor, etc.), the Minimum, Maximum, and Steps parameters also represent different types of values. In broad
terms, the (Maximum – Minimum)/Steps = the number of specific input/output values.
FDwfAnalogIOChannelNodeInfo returns the type of values to expect and
FDwfAnalogIOChannelNodeName returns the units of these values.
FDwfAnalogIOChannelNodeSet(
HDWF hdwf,
int idxChannel, int idxNode, double value)
Parameters:
-
hdwf – Open interface handle on a device.
- idxNode – Node index.
- idxChannel – Analog I/O channel index of the device.
- value – Value to set.
The function above is used to set the node value for the specified node on the specified channel.
FDwfAnalogIOChannelNodeGet(
HDWF hdwf,
int idxChannel, int idxNode, double *pvalue)
Parameters:
-
hdwf – Open interface handle on a device.
- idxChannel – Analog I/O channel index of the device.
- idxNode – Node index.
- pvalue – Pointer to variable to return the configured value.
The function above returns the currently set value of the node on the specified channel.