unicorn_server.py

unicorn_server.py

from flask import Flask
app = Flask(__name__)
import unicornhat as UH
import time
import os
import signal
import sys

def clear_uh():
    UH.clear()
    UH.show()

def sigterm_handler(_signo, _stack_frame):
    clear_uh()
    sys.exit(0)

max_pixels = 8

signal.signal(signal.SIGTERM, sigterm_handler)

def on(column, r, g, b):
    x = column
    for y in range(0, max_pixels):
        UH.set_pixel(x, y, r, g, b)
    UH.show()
sleep_for = 0.25

@app.route('/red')
def blink_red():
    for i in range(0,8):
        on(i, 255, 0, 0)

    time.sleep(sleep_for)
    clear_uh()

    return 'Blinking red!'

@app.route('/')
def blink():
    for i in range(0,8):
        on(i, 0, 0, 255)

    time.sleep(sleep_for)
    clear_uh()

    return 'Blinking!'

if __name__ == '__main__':
   app.run(host="0.0.0.0", port=5000, debug=True)