Справочник Пользователя для National Instruments 321645c-01
Chapter 2
Function Reference — DIG_Grp_Status
NI-DAQ FRM for PC Compatibles
2-170
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National Instruments Corporation
DIG_In_Grp
can fetch the data an external device has latched in. If the specified group is
configured as an output group and
DIG_Grp_Status
returns handshakeStatus = 1,
DIG_Out_Grp
can write the next piece of data to the external device. If the specified group
is not assigned any ports, NI-DAQ returns an error code and handshakeStatus = 0.
You must call
DIG_Grp_Config
to assign ports to a group and to configure a group for data
direction. Group configuration is discussed under the
DIG_Grp_Config
description.
For the DIO-32F, the state of handshakeStatus corresponds to the state of the DRDY bit.
Refer to your device user manual for handshake timing details.
Refer to your device user manual for handshake timing details.