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Functional groups
Functional groups
Manual ADQ-250 series Rev. 0.9
Figure 12: Wiring of the digital I/Os
3.3.2 Programming
The bi-directional 8 bit digital I/O port (DIO_x) can be programmed by port as input or output.
After power-up the port is configured as input.
3.3.2.1 Single value input/output
In this operation mode one digital value can be read resp. output port-wise. The port direction
is defined by software.
Note
: A port configured as output can be read back also!
Follow the order of operation as described in the online help.
3.3.2.2 Streaming Operation
Depending on the port direction the software-controlled streaming operation enables a conti-
nuous reading of digital inputs resp. the output of a bit pattern stream with up to 1 kS/s.
Follow the order of operation as described in the online help.
3.3.2.3 Interrupt modes
On demand the digital I/O port configured as input can be monitored on bit change and can
be evaluated as an interrupt event. Programming is done in the operation mode „ interrupt“.
3.3.2.3.1 Bit change
In the operation mode „bit change“ one or more input bits which should be monitored for
toggling can be masked. For each rising and falling edge, a bit mask defines which bit and which
edge should generate an interrupt. As soon as an appropriate edge at minimum one bit masked
with „1“ occurs, an interrupt is triggerd (see figure ).
Summary of Contents for ADQ-250 cPCI
Page 1: ...Manual Rev 0 9 EN ADQ 250 cPCI PCIe Isolated 8 channel voltage measurement board...
Page 14: ...14 Functional groups Functional groups Manual ADQ 250 series Rev 0 9...
Page 24: ...24 Appendix Appendix Manual ADQ 250 series Rev 0 9...
Page 37: ...Appendix 37 Manual ADQ 250 series Rev 0 9 Appendix...
