BrightSign HD110 - Boot and Hardware Troubleshooting

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The following example script for the HD2000 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