Plasma 2350 W: cheerlight example

micropython/examples/plasma_2350_w/cheerlights.py

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+import plasma
+from plasma import plasma2040
+import network
+import time
+import requests
+
+# Total number of LEDs on our LED strip
+NUM_LEDS = 60
+
+# How long between cheerslight updates in seconds
+INTERVAL = 60
+
+# Check and import the SSID and Password from secrets.py
+try:
+    from secrets import WIFI_SSID, WIFI_PASSWORD
+    if WIFI_SSID == "":
+        raise ValueError("WIFI_SSID in 'secrets.py' is empty!")
+    if WIFI_PASSWORD == "":
+        raise ValueError("WIFI_PASSWORD in 'secrets.py' is empty!")
+except ImportError:
+    raise ImportError("'secrets.py' is missing from your Plasma 2350 W!")
+except ValueError as e:
+    print(e)
+
+wlan = network.WLAN(network.STA_IF)
+
+
+def connect():
+    # Connect to the network specified in secrets.py
+    wlan.active(True)
+    wlan.connect(WIFI_SSID, WIFI_PASSWORD)
+    while wlan.isconnected() is False:
+        print("Attempting connection to {}".format(WIFI_SSID))
+        time.sleep(1)
+
+
+# APA102 / DotStar™ LEDs
+# led_strip = plasma.APA102(NUM_LEDS, 0, 0, plasma2040.DAT, plasma2040.CLK)
+
+# WS2812 / NeoPixel™ LEDs
+led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma2040.DAT)
+
+# Start connection to the network
+connect()
+
+# Store the local IP address
+ip_addr = wlan.ipconfig('addr4')[0]
+
+# Let the user know the connection has been successful
+# and display the current IP address of the Plasma 2350 W
+print("Successfully connected to {}. Your Plasma 2350 W's IP is: {}".format(WIFI_SSID, ip_addr))
+
+# Start updating the LED strip
+led_strip.start()
+
+while True:
+    if wlan.isconnected():
+        try:
+            print("Getting new colour...")
+            req = requests.get("http://api.thingspeak.com/channels/1417/field/2/last.json", timeout=None)
+            json = req.json()
+            req.close()
+            print("Success!")
+
+            colour = tuple(int(json['field2'][i:i + 2], 16) for i in (1, 3, 5))
+
+            for i in range(NUM_LEDS):
+                led_strip.set_rgb(i, *colour)
+        except OSError:
+            print("Error: Failed to get new colour")
+    else:
+        print("Lost connection to network {}".format(WIFI_SSID))
+
+    time.sleep(INTERVAL)