xmas_tree/example_bicolour.py

   1 import tree
   2
   3 # some constants to identify each LED
   4 L1 = 2
   5 L2 = 4
   6 L3 = 8
   7 L4 = 16
   8 L5 = 32
   9 L6 = 64
  10 AMBER = 1 # LED 0 = amber
  11 RED = 128 # LED 0 = red
  12 GREEN = 256 # LED 0 = green
  13 NO_LEDS = 0
  14 BOTTOM6 = 2+4+8+16+32+64 # the 6 standard red LEDs
  15
  16 # note that we must tell setup() that we have a bicolour LED
  17 tree.setup() # you must always call setup() first!
  18
  19 # All the red LEDs will be permanently illuminated and we rotate
  20 # between the various colours for the bicolour LED at the top.
  21 for i in range(7): # repeat 7 times
  22   tree.leds_on_and_wait(BOTTOM6, 0.8) # top LED off
  23   tree.leds_on_and_wait(BOTTOM6 + GREEN, 0.8) # top LED green
  24   tree.leds_on_and_wait(BOTTOM6 + RED,   0.8) # top LED red
  25   tree.leds_on_and_wait(BOTTOM6 + AMBER, 0.8) # top LED amber
  26
  27   tree.leds_on_and_wait(NO_LEDS, 0.8) # all LEDs off
  28   tree.leds_on_and_wait(GREEN, 0.8) # top LED green
  29   tree.leds_on_and_wait(RED,   0.8) # top LED red
  30   tree.leds_on_and_wait(AMBER, 0.8) # top LED amber
  31
  32 tree.all_leds_off() # extinguish all LEDs
  33
  34 # All done!
  35 tree.cleanup() # call cleanup() at the end
  36