' GPIO Button and LED Test

' Copyright (C)2018-2023, Philip Munts dba Munts Technologies.
'
' Redistribution and use in source and binary forms, with or without
' modification, are permitted provided that the following conditions are met:
'
' * Redistributions of source code must retain the above copyright notice,
'   this list of conditions and the following disclaimer.
'
' THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
' IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
' ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
' LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
' CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
' SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
' INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
' CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
' ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
' POSSIBILITY OF SUCH DAMAGE.

import "gpio.bas"

print "GPIO Button and LED Test";;

' Open the GPIO pins

Button = new(GPIO_Pin)
Button.Open(0, 6, 0, false)

LED    = new(GPIO_Pin)
LED.Open(0, 26, 1, false)

' Force initial detection

oldstate = NOT Button.Read()

while true
  newstate = Button.Read()

  if newstate <> oldstate then
    if newstate then
      print "PRESSED";
      LED.Write(true)
    else
      print "RELEASED";
      LED.Write(false)
    endif

    oldstate = newstate
  endif
wend