def data_handler(data):
oled.fill(0)
oled.text("listen", 0, 0)
oled.text("UDP Port", 0, 10)
oled.text(str(UDP_PORT), 0, 20)
oled.text(data.decode(), 0, 40)
oled.show()
def onMQTTMessage(topic, msg):
global newMessage
global lastDisplay
newMessage = msg
print("Topic: %s, Message: %s" % (topic, msg))
oled.fill(0)
oled.text('Pi4IoT', 0, 0)
if msg == b"on":
led.off()
oled.text('LED: ON', 0, 20)
oled.text(lastDisplay, 0, 30)
elif msg == b"off":
led.on()
oled.text('LED: OFF', 0, 20)
oled.text(lastDisplay, 0, 30)
else:
state = "LED: OFF" if led.value() else "LED: ON"
lastDisplay = msg.decode()
oled.text(state, 0, 20)
oled.text(lastDisplay, 0, 30)
oled.show()
font = ImageFont.truetype('/home/pi/workspace/Oled/fonts/Font.ttc', 16)
def handler(signum, frame):
print(f'Signal handler called with signal {signum}')
oled.teardown()
exit(0)
if __name__ == "__main__":
signal.signal(signal.SIGTERM, handler)
signal.signal(signal.SIGINT, handler)
oled = oled.Oled()
ip = get_host_ip()
oled.setup()
oled.clear()
while True:
image = Image.new('1', (config.WIDTH, config.HEIGHT), "WHITE")
draw = ImageDraw.Draw(image)
draw.line([(0, 0), (127, 0)], fill=0)
draw.line([(0, 0), (0, 31)], fill=0)
draw.line([(0, 31), (127, 31)], fill=0)
draw.line([(127, 0), (127, 31)], fill=0)
draw.text((4, 7), ip, font=font, fill=0)
oled.show(image)
oled.delay(10000)
ip = get_host_ip()
def show_value(value):
oled.fill(0)
display_ip()
oled.text(value, 0, 40)
oled.show()
oled.show()
def each_loop(client):
global newMessage
if newMessage in [b'on', b'off']:
client.publish(MQTT_CONFIG['TOPIC'] + b'/state', newMessage)
newMessage = None
elif newMessage is not None:
client.publish(MQTT_CONFIG['TOPIC'] + b'/display', newMessage)
newMessage = None
if mode == HTTP_MODE:
from set_led_http import serve
show_value("")
serve(show_value)
elif mode == UDP_MODE:
oled.fill(0)
oled.text("listen", 0, 0)
oled.text("UDP Port", 0, 10)
oled.text(str(UDP_PORT), 0, 20)
oled.show()
from udp_client import listen
listen(data_handler, port=UDP_PORT)
elif mode == MQTT_MODE:
from mqtt import listen
listen(onMQTTMessage, each_loop, MQTT_CONFIG)