Plasma 2350 W: web based example

2024-11-04 15:03:24 +00:00 · 2024-11-04 15:03:24 +00:00 · 7eff2c71a3
commit 7eff2c71a3
parent f1e82b1f60
3 changed files with 105 additions and 0 deletions
--- a/micropython/examples/plasma_2350_w/html/index.html
+++ b/micropython/examples/plasma_2350_w/html/index.html
@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Plasma 2350 W</title>
+</head>
+<body>
+
+<h1>Plasma 2350 W</h1>
+<h3>You can use this webpage to change the colour of your attached LED strip! &#127752</h3>
+
+<form action="/", method="post">
+  <input type="color" id="rgbled" name="rgbled" value={{last_hex}}>
+  <br>
+  <br>
+  <input type="submit" value="Apply">
+</form>
+
+</body>
+</html> 
--- a/micropython/examples/plasma_2350_w/secrets.py
+++ b/micropython/examples/plasma_2350_w/secrets.py
@ -0,0 +1,2 @@
+WIFI_SSID = ""
+WIFI_PASSWORD = ""
--- a/micropython/examples/plasma_2350_w/webpage.py
+++ b/micropython/examples/plasma_2350_w/webpage.py
@ -0,0 +1,84 @@
+'''
+A simple web example that allows you to set the LED Strip colour using a colour picker.
+You will need to install Phew for this example to work
+In Thonny select Tools > Manage Packages and search for "micropython-phew"
+'''
+
+import network
+from pimoroni import RGBLED
+from phew import server, connect_to_wifi, is_connected_to_wifi
+from phew.template import render_template
+import plasma
+
+# 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)
+
+# Total number of LEDs on our LED strip
+NUM_LEDS = 60
+
+# 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, plasma.plasma2040.DAT)
+
+# Setup the RGB Led
+led = RGBLED(16, 17, 18)
+
+last_hex = 0
+
+# Connect our Tiny FX W to the network
+connect_to_wifi(WIFI_SSID, WIFI_PASSWORD)
+
+# If we're connected to the network, print out the IP address in the terminal
+if is_connected_to_wifi():
+    print("Connected")
+    print(network.WLAN(network.STA_IF).ifconfig()[0])
+
+# Start updating the LED strip
+led_strip.start()
+
+
+# Convert our hex value to RGB
+# https://www.30secondsofcode.org/python/s/hex-to-rgb/
+def hex_to_rgb(hex):
+    return tuple(int(hex[i:i + 2], 16) for i in (0, 2, 4))
+
+
+# We've only got one page in the root so we setup the routing for that request
+# and return the index.html
+@server.route("/", methods=["GET", "POST"])
+def index(request):
+    global last_hex
+    # If a GET request is made, return the page
+    if request.method == 'GET':
+        return render_template("html/index.html")
+
+    # If a POST request is made we need to process the information
+    # and use that to update the LED colour
+    if request.method == 'POST':
+        last_hex = request.form["rgbled"]
+        value = hex_to_rgb(last_hex[1:])
+        led.set_rgb(value[0], value[1], value[2])
+        for i in range(NUM_LEDS):
+            led_strip.set_rgb(i, value[0], value[1], value[2])
+        return render_template("html/index.html")
+
+
+# catchall
+@server.catchall()
+def catchall(request):
+    return "Not found", 404
+
+
+# Run the server!
+server.run()