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ch10_timer_final.py
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ch10_timer_final.py
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from microbit import *
import music
SET, RUN, ALARM = range(3)
state = SET
mins = 1
secs = 0
last_tick_time = 0
def display_mins(m):
message = str(m)
if m == 1:
message += " min"
else:
message += " mins"
display.scroll(message, wait=False, loop=True)
def display_time(m, s):
message = str(m)
if s < 10:
message += ":0" + str(s)
else:
message += ":" + str(s)
display.scroll(message, wait=False)
def handle_set_state():
global state, mins
if button_a.was_pressed():
mins += 1
if mins > 10:
mins = 1
display_mins(mins)
if button_b.was_pressed():
display_time(mins, secs)
state = RUN
def handle_run_state():
global state, mins, secs, last_tick_time
if button_b.was_pressed():
state = SET
display_mins(mins)
time_now = running_time()
if time_now > last_tick_time + 5000:
last_tick_time = time_now
secs -= 5
if secs < 0:
secs = 55
mins -= 1
display_time(mins, secs)
if mins == 0 and secs == 0:
state = ALARM
music.pitch(440, wait=False)
display.show(Image.HAPPY)
def handle_alarm_state():
global state, mins
if button_b.was_pressed():
state = SET
music.stop()
mins = 1
display_mins(mins)
display_mins(mins)
while True:
if state == SET:
handle_set_state()
elif state == RUN:
handle_run_state()
elif state == ALARM:
handle_alarm_state()