79 lines
2.1 KiB
Python
79 lines
2.1 KiB
Python
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import WIFI_CONFIG
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from network_manager import NetworkManager
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import uasyncio
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from urequests import get
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import time
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import ujson
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import plasma
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from plasma import plasma2040
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"""
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This Plasma Stick example sets your LED strip to the current #cheerlights colour.
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Find out more about the Cheerlights API at https://cheerlights.com/
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"""
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URL = 'http://api.thingspeak.com/channels/1417/field/2/last.json'
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UPDATE_INTERVAL = 120 # refresh interval in secs. Be nice to free APIs!
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# Set how many LEDs you have
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NUM_LEDS = 50
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def status_handler(mode, status, ip):
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# reports wifi connection status
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print(mode, status, ip)
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print('Connecting to wifi...')
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# flash while connecting
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for i in range(NUM_LEDS):
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led_strip.set_rgb(i, 255, 255, 255)
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time.sleep(0.02)
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for i in range(NUM_LEDS):
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led_strip.set_rgb(i, 0, 0, 0)
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if status is not None:
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if status:
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print('Connection successful!')
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else:
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print('Connection failed!')
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# light up red if connection fails
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for i in range(NUM_LEDS):
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led_strip.set_rgb(i, 255, 0, 0)
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def hex_to_rgb(hex):
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# converts a hex colour code into RGB
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h = hex.lstrip('#')
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r, g, b = (int(h[i:i + 2], 16) for i in (0, 2, 4))
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return r, g, b
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# set up the WS2812 / NeoPixel™ LEDs
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led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma2040.DAT)
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# start updating the LED strip
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led_strip.start()
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# set up wifi
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network_manager = NetworkManager(WIFI_CONFIG.COUNTRY, status_handler=status_handler)
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uasyncio.get_event_loop().run_until_complete(network_manager.client(WIFI_CONFIG.SSID, WIFI_CONFIG.PSK))
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while True:
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# open the json file
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print(f"Requesting URL: {URL}")
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data = get(URL).json()
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print("Data obtained!")
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# extract hex colour from the data
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hex = data['field2']
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# and convert it to RGB
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r, g, b = hex_to_rgb(hex)
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# light up the LEDs
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for i in range(NUM_LEDS):
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led_strip.set_rgb(i, r, g, b)
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print(f"LEDs set to {hex}")
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# sleep
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print(f"""Sleeping for {UPDATE_INTERVAL} seconds.
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""")
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time.sleep(UPDATE_INTERVAL)
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