ADLINK Express-LPC - Manual (Page 26)

Express-LPC User’s Manual Page 26
6.2 GPIO
GPIO library support is limited to GPIO signals that originate from the Computer on Module
and extended to the carrier board. COM Express modules support 4 GPO and 4 GPI signals.
Some of ADLINK’s COM Express boards can configure all 8 ports for GPI or GPO use.
GPIO signals can be monitored and controlled by using the ADLINK Intelligent Device
Interface (AIDI) library that is compatible and identical across all ADLINK COM Express
modules and all supported operating systems.
The COM Express type II standard assigns the following pins for either GPI or GPO
Pin Signal Type # AIDI ID (bit) Remark
A54 GPI0 0 Express-LPC can configure this pin for GPI and GPO
A63 GPI1 1 Express-LPC can configure this pin for GPI and GPO
A67 GPI2 2 Express-LPC can configure this pin for GPI andGPO
A85 GPI3 3 Express-LPC can configure this pin for GPI andGPO
A93 GPO0 4 Express-LPC can configure this pin for GPI and GPO
B54 GPO1 5 Express-LPC can configure this pin for GPI and GPO
B57 GPO2 6 Express-LPC can configure this pin for GPI and GPO
B63 GPO3 7 Express-LPC can configure this pin for GPI and GPO
AIDI Demo Program
- GPIO Tab
The AIDI Demo Program displays
current GPI or GPO status and
allows reading of GPI and writing
to GPO.
The table above links logical port
numbers in AIDI to physical port
numbers on the COM Express
board-to-board connector.
For boards that support multi-
direction the “SetDirection” button
can configure the port for either
GPI or GPO