1  # SPDX-FileCopyrightText: 2020 Eva Herrada for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  import terminalio
 7  from adafruit_magtag.magtag import MagTag
 8  
 9  magtag = MagTag()
10  magtag.peripherals.neopixel_disable = False
11  
12  magtag.add_text(
13      text_font=terminalio.FONT,
14      text_position=(140, 55),
15      text_scale=7,
16      text_anchor_point=(0.5, 0.5),
17  )
18  
19  magtag.set_text("00:00")
20  
21  # Function that makes the neopixels display the seconds left
22  def update_neopixels(seconds):
23      n = seconds // 15
24      for j in range(n):
25          magtag.peripherals.neopixels[3 - j] = (128, 0, 0)
26      magtag.peripherals.neopixels[3 - n] = (int(((seconds / 15) % 1) * 128), 0, 0)
27  
28  
29  alarm_set = False
30  while True:
31      if not alarm_set:
32          # Set the timer to 1 minute
33          if magtag.peripherals.button_a_pressed:
34              alarm_time = 60
35              alarm_set = True
36              start = time.time()
37              magtag.set_text("01:00")
38              last_set = 60
39              magtag.peripherals.neopixels.fill((128, 0, 0))
40  
41          # Set the timer to 5 minutes
42          elif magtag.peripherals.button_b_pressed:
43              alarm_time = 300
44              alarm_set = True
45              start = time.time()
46              magtag.set_text("05:00")
47              last_set = 300
48              magtag.peripherals.neopixels.fill((128, 0, 0))
49  
50          # Set the timer to 20 minutes
51          elif magtag.peripherals.button_c_pressed:
52              alarm_time = 1200
53              alarm_set = True
54              start = time.time()
55              magtag.set_text("20:00")
56              last_set = 1200
57              magtag.peripherals.neopixels.fill((128, 0, 0))
58  
59      else:
60          time.sleep(1)
61          remaining = alarm_time - (time.time() - start)
62          if (remaining < 0):
63              remaining = 0
64          print(remaining)
65          if remaining == 0:
66              magtag.peripherals.neopixels.fill((255, 0, 0))
67              # Play alarm and flash neopixels to indicate the timer is done
68              for i in range(2):
69                  magtag.peripherals.neopixels.fill((255, 0, 0))
70                  magtag.peripherals.play_tone(3000, 0.5)
71                  magtag.peripherals.neopixels.fill((0, 0, 0))
72                  time.sleep(0.1)
73                  magtag.peripherals.neopixels.fill((255, 0, 0))
74                  magtag.peripherals.play_tone(3000, 0.5)
75                  magtag.peripherals.neopixels.fill((0, 0, 0))
76                  time.sleep(0.5)
77              alarm_set = False
78              magtag.set_text("00:00")
79              last_set = 0
80              continue
81  
82          update_neopixels(remaining % 60)
83          if remaining % 60 == 0 and remaining != last_set:
84              magtag.set_text("{:02d}:00".format(remaining // 60))
85              last_set = remaining
86  
87      # Reset the timer
88      if magtag.peripherals.button_d_pressed:
89          time.sleep(0.1)
90          magtag.peripherals.neopixels.fill((0, 0, 0))
91          time.sleep(0.1)
92          magtag.peripherals.neopixels.fill((255, 0, 0))
93          time.sleep(0.1)
94          magtag.peripherals.neopixels.fill((0, 0, 0))
95          time.sleep(0.1)
96  
97          alarm_set = False
98          magtag.set_text("00:00")