User`s guide

Configuration through the web interface

 Out: Allows output of GPIO signals. The GPIO pin is used for user-defined signal

output from the Digi device to the connected device. This mode can be used to toggle

the output of GPIO signals between high and low.

Additional implementation required for input and output choices

Changing the GPIO pin settings from Serial to Input or Output means you are responsible for

implementing how the pins and signals will work, including developing any applications, signal-

handling, and hardware.

Set alarms for GPIO pin changes, as needed

To issue alarms in the form of email notifications or SNMP traps when a GPIO pin signals that an

event has occurred on the Digi device, go to the Alarms page and configure those alarms. See

"Alarms" on page 85.

Test GPIO pins

Once the GPIO pins and any alarms associated with them have been configured, test the GPIO pins

to make sure they work as desired.

Test GPIO input

Typically, input signals on GPIO pins are used to trigger an email alarm, which tells an

administrator or technician that a significant event occurred within the device. To test GPIO input:

1 On the SW2 bank of switches on the development board, ensure that one of the GPIO pins is

set to High.

2 On the SW1 bank of switches, set the same GPIO pin to IO.

3 Configure the GPIO pin for input. See "GPIO pins" on page 83.

4 Configure an email alarm for the GPIO pin. See "Alarms" on page 85.

5 Toggle the SW2 switch several times to generate several email alarms.

Test GPIO output

To test GPIO output, a GPIO signal from the configuration application is raised that in turn causes

an LED on the development board to turn on.

1 On the SW2 bank of switches on the development board, make sure that one of the GPIO pins

is set to High.

2 On the SW1 bank of switches, set the same GPIO pin to IO.

3 In the web interface for the Digi device, click the GPIO link. On the GPIO page, configure

one or more GPIO pins for output. See "GPIO pins" on page 83 for details.

4 Under Administration, click the System Information link. On the System Information

page, click the GPIO link.

5 Choose Asserted to raise the signal, and then click Set Pins. An LED on the development

board is turned on.

Note that this process does not configure the Digi device. Settings are not saved. If the

module reboots, perform steps 2 and 3 again.