Manual BrightSign HD600 (page 70 of 112) (English)

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Using the GPIO control port

BrightSign has a DB25 General Purpose Input Output (GPIO) Port. This port has 12 inputs that you

can directly connect to buttons or switches, and 6 outputs that you can use to directly drive LEDs.

To use this port you must create a simple but custom cable that connects a DB25 connector to

your buttons or LEDs. See the

BrightSign Hardware Manual

for more information and example

circuits. You can also purchase a test button/LED board from BrightSign to evaluate the GPIO

port and test scripts that read these buttons or set these LEDs.

Here is an example of a script that flashes an LED for half a second each time the user presses a

button on the BrightSign button/led board.

print "BrightSign Button-LED Test Running"

p = CreateObject("roMessagePort")

tmr = CreateObject("roMessagePort")

gpio = CreateObject("roGpioControlPort")

gpio.SetPort(p)

event_loop:

msg=wait(0, p)

if type(msg)<>"roGpioButton" then event_loop

butn = msg.GetInt()

if butn > 5 then event_loop

gpio.SetOutputState(butn+17,1)

print "Button Pressed: ";butn

msg = wait (500, tmr)

gpio.SetOutputState(butn+17,0)

clear_events:

msg=p.GetMessage():if type(msg)<>"rotINT32" then clear_events

goto event_loop

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BrightSign HD600 Manual

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