94 lines
2.5 KiB
Python
94 lines
2.5 KiB
Python
# Countdown Timer with Alarm
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# i2s Audio Example
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# Use VOL +/- to increase/decrease the amount of time
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# Use the Sleep ZZZ button to start the countdown
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from machine import Timer
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from audio import WavPlayer
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from stellar import StellarUnicorn
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from picographics import PicoGraphics, DISPLAY_STELLAR_UNICORN as DISPLAY
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import time
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su = StellarUnicorn()
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graphics = PicoGraphics(DISPLAY)
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graphics.set_font("bitmap6")
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WHITE = graphics.create_pen(255, 255, 255)
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BLUE = graphics.create_pen(0, 0, 255)
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CLEAR = graphics.create_pen(0, 0, 0)
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RED = graphics.create_pen(255, 0, 0)
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GREEN = graphics.create_pen(0, 255, 0)
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su.set_brightness(0.5)
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audio = WavPlayer(0, 10, 11, 9, amp_enable=22)
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class Countdown(object):
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def __init__(self):
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self.timer_running = False
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self.total_seconds = 0
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self.timer = None
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def process_input(self):
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if su.is_pressed(StellarUnicorn.SWITCH_VOLUME_UP):
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self.total_seconds += 1
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if su.is_pressed(StellarUnicorn.SWITCH_VOLUME_DOWN):
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if self.total_seconds > 0:
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self.total_seconds -= 1
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if su.is_pressed(StellarUnicorn.SWITCH_SLEEP):
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self.start_timer()
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def display_time(self):
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seconds = self.total_seconds % (24 * 3600)
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seconds %= 3600
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minutes = seconds // 60
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seconds %= 60
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# Add leading zeros to the minutes and seconds
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if len(str(minutes)) == 1:
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minutes = "0{}".format(minutes)
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if len(str(seconds)) == 1:
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seconds = "0{}".format(seconds)
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return "{}\n{}".format(minutes, seconds)
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def draw(self):
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graphics.set_pen(graphics.create_pen(0, 0, 0))
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graphics.clear()
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graphics.set_pen(RED)
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graphics.rectangle(0, 0, 16, 16)
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graphics.set_pen(CLEAR)
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graphics.rectangle(2, 2, StellarUnicorn.WIDTH - 4, 12)
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graphics.set_pen(WHITE)
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graphics.text(self.display_time(), 2, 1, -1, 1)
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su.update(graphics)
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def start_timer(self):
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if not self.timer_running:
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self.timer = Timer(mode=Timer.PERIODIC, period=1000, callback=self.countdown)
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self.timer_running = True
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def reset(self):
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time.sleep(0.2)
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self.timer.deinit()
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self.timer_running = False
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def countdown(self, arg):
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if self.total_seconds == 0:
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audio.play_wav("doorbell.wav", False)
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self.reset()
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else:
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self.total_seconds -= 1
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count = Countdown()
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while 1:
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count.process_input()
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count.draw()
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time.sleep(0.07)
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