testing setting image

rpi/roy-test.py

@@ -1,6 +1,7 @@
 from rgbmatrix import RGBMatrix, RGBMatrixOptions
 import paho.mqtt.client as mqtt
 import time
+from PIL import Image
 
 
 # Configuration for the matrix
@@ -16,19 +17,41 @@ matrix = RGBMatrix(options = options)
 offscreen_canvas = matrix.CreateFrameCanvas()
 
 
+image = Image.open("../testImg.bmp")
+
+# Make image fit our screen.
+image.thumbnail((matrix.width, matrix.height), Image.ANTIALIAS)
+
+
+
+def updateScreen():
+    global color
+    if(color == 1):
+        offscreen_canvas.Fill(255,255,255)
+    elif(color == 0):
+        offscreen_canvas.Fill(255,0,0)
+    elif(color == 2):
+        matrix.SetImage(image.convert('RGB'))
+        
+    offscreen_canvas.brightness = 50
+    offscreen_canvas = matrix.SwapOnVSync(offscreen_canvas)
+
+
 color = 0
 def toggleColor():
     global color
-    if(color == 1):
-        color = 0
-    else:
-        color = 1
+    color += 1
+    color %= 3
+    
+    updateScreen()
 
 
-def on_connect(client, userdata, flags, rc):
-    print("Connected to MQTT broker with result code " + str(rc))
+# functions called by the MQTT listener
+def on_connect(client, userdata, flags, responseCode):
+    print("Connected to MQTT broker with result code " + str(responseCode))
     client.subscribe("test")
 
+
 def on_message(client, userdata, message):
     print("Received message '" + str(message.payload) + "' on topic '"
         + message.topic + "' with QoS " + str(message.qos))
@@ -44,13 +67,7 @@ client.connect("10.1.13.173", 1883, 60)  # Replace with your MQTT broker's addre
 
 client.loop_start()
 
+
 while True:
     time.sleep(0.005)
-    
-    if(color == 1):
-        offscreen_canvas.Fill(255,255,255)
-    else:
-        offscreen_canvas.Fill(255,0,0)
-        
-    offscreen_canvas.brightness = 50
-    offscreen_canvas = matrix.SwapOnVSync(offscreen_canvas)
+