Applicable Model(s)

IPC2210A

Title

IPC2210A GPIO Controller Driver Basics

Date

03/29/2024

Rev

00

P/N

0907-7028

Summary

This document describes the method used to test the GPIO port pins on the Maple Systems IPC2210A with the Linux Operating System. This method will use a GPIO controller driver utilizing the EAPI API made specifically for the IPC2210A.

NOTE: Your Linux operating system should be on the 6.5.0-26-generic kernel version or better.


Solution

1.

Confirm the GPIO controller driver has been successfully installed

a.

Navigate to /home/user/Documents/Linux/EApi_innodisk_sample_1.1.7 directory

a.

Confirm that the files are present in the EApi_innodisk_sample_1.1.7 directory as show in the following screenshot:


2.

Navigating to the EApi_innodisk_sample_1.1.7 directory in the Linux terminal

a.

Press Ctrl+Alt+T to open a Linux terminal

b.

Inside the Linux terminal change directory to the EApi_innodisk_sample_1.1.7 directory using the command:

cd /home/user/Documents/Linux/EApi_innodisk_sample_1.1.7


3.

Confirm your present working directory by entering the following command into the Linux terminal:

pwd

NOTE: Confirm the pwd path is /home/user/Documents/Linux/EApi_innodisk_sample_1.1.7


4.

To access the help and usage documentation for the GPIO driver, enter the following command into the linux terminal while in the /home/user/Documents/Linux/EApi_innodisk_sample_1.1.7 directory:

sudo ./EApi_test -h


5.

Enter the following command for diagnostic information about the Linux PC:

sudo ./EApi_Test


6.

Enter the following commands to test GPIO driver functionality:

a.

Turning GPIO port #0 to be “output” mode with “low level” volt enter the following command:

sudo ./EApi_test -g 0 -d 0 -v 0

b.

Turning GPIO port #0 to be “output” mode with “high level” volt enter the following command:

sudo ./EApi_Test -g 0 -d 0 -v 1

c.

Turning GPIO port #0 to be “input” mode with “high level” volt enter the following command:

sudo ./EApi_Test -g 0 -d 1

d.

Turning GPIO port #0 to be “input” mode with “low level” cannot be accomplished as an input must remain “high level” volt to access data from outputs and will return the following screenshot below:

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