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Added a shutdown button

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This commit is contained in:
Balthasar Reuter
2015-06-04 15:20:23 +02:00
parent ecdc05ed3b
commit 7c9afab7c9
1 changed files with 13 additions and 3 deletions
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16
photobooth.py
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@@ -43,11 +43,14 @@ image_pose = None
# Image basename # Image basename
image_basename = datetime.now().strftime("%Y-%m-%d/pic") image_basename = datetime.now().strftime("%Y-%m-%d/pic")
# GPIO channel of switch to shutdown the Pi
gpio_shutdown_channel = 24 # pin 18 in all Raspi-Versions
# GPIO channel of switch to take pictures # GPIO channel of switch to take pictures
gpio_trigger_channel = 23 # pin 16 in all Raspi-Versions gpio_trigger_channel = 23 # pin 16 in all Raspi-Versions
# PyGame event used to detect GPIO triggers # PyGame event used to detect GPIO triggers
gpio_trigger_event = pygame.USEREVENT gpio_pygame_event = pygame.USEREVENT
# Waiting time in seconds for posing # Waiting time in seconds for posing
pose_time = 5 pose_time = 5
@@ -247,7 +250,7 @@ class GUI_PyGame:
if event.type == pygame.QUIT: return if event.type == pygame.QUIT: return
elif event.type == pygame.KEYDOWN: handle_keypress(event.key) elif event.type == pygame.KEYDOWN: handle_keypress(event.key)
elif event.type == pygame.MOUSEBUTTONUP: handle_mousebutton(event.button, event.pos) elif event.type == pygame.MOUSEBUTTONUP: handle_mousebutton(event.button, event.pos)
elif event.type == gpio_trigger_event: handle_gpio_event(event.channel) elif event.type == gpio_pygame_event: handle_gpio_event(event.channel)
def teardown(self): def teardown(self):
pygame.quit() pygame.quit()
@@ -376,6 +379,13 @@ def handle_gpio_event(channel):
"""Implements the actions taken for a GPIO event""" """Implements the actions taken for a GPIO event"""
if channel == gpio_trigger_channel: if channel == gpio_trigger_channel:
take_picture() take_picture()
elif channel == gpio_shutdown_channel:
display.clear()
print("Shutting down!")
display.show_message("Shutting down!")
display.apply()
sleep(1)
os.system("shutdown -h now")
def handle_exception(msg): def handle_exception(msg):
"""Displays an error message and returns""" """Displays an error message and returns"""
@@ -401,7 +411,7 @@ def setup_gpio():
def handle_gpio(channel): def handle_gpio(channel):
"""Interrupt handler for GPIO events""" """Interrupt handler for GPIO events"""
display.trigger_event(gpio_trigger_event, channel) display.trigger_event(gpio_pygame_event, channel)
def teardown(exit_code=0): def teardown(exit_code=0):
display.teardown() display.teardown()