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Software User Guide
Chapter 6: Program GPI/O and Serial Input/Output
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General Purpose Outputs (GPO)
The ESP-88 has 8 GPO that can be expanded to 16 GPO with the
addition of a GPIO expansion card. GPO are often used as indicators that
are activated when the system is in a certain state. For example, you
might use GPO to signal an external device, like a video switcher, when a
certain parameter set is chosen. Or, you could attach an LED to a GPO
and program it to illuminate when a parameter set is invoked.
Note: GPO can only be controlled by a timer, or by invoking a parameter
set.
To open the GPO control panel, double-click on the GPO block in the
ESP-88 window.
Figure 6.12 - Open the GPO control panel
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