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"""
A simple pomodoro timer.
It times a 25 minute work session then 5 minutes rest.
Press the reset button to restart the timer.
"""
from microbit import *
# Tweak CLOCK_ADJUST to make your system clock more accurate.
# My clock is too fast by 4 seconds every minute so I use 4/60.
# If your clock is too slow by 3 seconds every minute use -3/60.
CLOCK_ADJUST = 4/60
ALL_LEDS_ON = Image('99999:'*5)
def index_to_xy(i):
x = i % 5
y = int(i / 5)
return x, y
def show_alarm():
for i in range(10):
display.show(ALL_LEDS_ON)
sleep(250)
display.clear()
sleep(250)
def run_timer(seconds, LED_state):
interval = int(seconds * 1000 / 25 * (1 + CLOCK_ADJUST))
intervals_remaining = 25
timer = running_time()
while intervals_remaining > 0:
# Every interval set a pixel to LED_state
time = running_time()
if time - timer >= interval:
timer = time
x, y = index_to_xy(intervals_remaining - 1)
display.set_pixel(x, y, LED_state)
intervals_remaining -= 1
print("pomodoro timer")
# time the pomodoro work session, 25 minutes
display.scroll("Go!")
display.show(ALL_LEDS_ON)
run_timer(25 * 60, 0)
show_alarm()
# time the pomodoro break, 5 minutes
display.scroll("break")
display.clear()
run_timer(5 * 60, 1)
show_alarm()
display.show(Image.NO)
print("finished\n")
print("Press the reset button to restart timer.")
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