1  import board
 2  import pulseio
 3  import touchio
 4  from adafruit_slideshow import SlideShow, PlayBackDirection
 5  
 6  # pylint: disable=no-member
 7  
 8  forward_button = touchio.TouchIn(board.TOUCH4)
 9  back_button = touchio.TouchIn(board.TOUCH1)
10  
11  brightness_up = touchio.TouchIn(board.TOUCH3)
12  brightness_down = touchio.TouchIn(board.TOUCH2)
13  
14  slideshow = SlideShow(
15      board.DISPLAY,
16      pulseio.PWMOut(board.TFT_BACKLIGHT),
17      folder="/",
18      auto_advance=False,
19      dwell=0,
20  )
21  
22  while True:
23      if forward_button.value:
24          slideshow.direction = PlayBackDirection.FORWARD
25          slideshow.advance()
26      if back_button.value:
27          slideshow.direction = PlayBackDirection.BACKWARD
28          slideshow.advance()
29  
30      if brightness_up.value:
31          slideshow.brightness += 0.001
32      elif brightness_down.value:
33          slideshow.brightness -= 0.001