Tried to add some communication between the esp and the hepialight

mapping/main.py

 id = [0,0]
 matsize = [0, 0]
  
+def color16_to_32(color):
+    color = int(color)
+    r = ((color >> 11) & 0xFF) * 2**3
+    g = ((color >> 5) & 0xFF) * 2**2
+    b = (color & 0xFF) * 2**3
+    return r << 16 | g << 8 | b
+
+def disp_img_data(data):
+    for i in range(NBR_LIGNES):
+        for j in range(NBR_COLONNES):
+            allumer_led(i, j, data[i * NBR_LIGNES + j])
+
+def data_to_color16(data):
+    d_color16 = []
+
+    for i in range(0, len(data), 2):
+        d_color16.append(data[i] << 8 | data[i+1])
+    
+    return list(map(color16_to_32, d_color16))
+
 def display_id():
 	afficher_texte("{}, {}".format(id[0], id[1]), speed=0.01)
  
@@ -53,12 +73,12 @@ def update_id(new_id):
 	envoyer_msg(E, "SET_ID:{},{}".format(id[0] + 1, id[1]))
 
 	if not check_presence(N) and not check_presence(E):
-		send_xy(0, 0, "MATSIZE:{},{}".format(id[0], id[1]))
+		send_xy(0, 0, "MATSIZE;{},{}".format(id[0], id[1]))
 
 	display_id()
 
 
-def handle_receive(msg, d):
+def handle_receive(msg, msg_bytes, d):
  
 	print("Received from {} : {}".format(d, msg))
 
@@ -82,13 +102,14 @@ def handle_receive(msg, d):
 		y = int(y)
 
 		if x == id[0] and y == id[1]:
-			handle_receive(m, d)
+			handle_receive(m, msg_bytes[7:], d)
 			return
 		
+		print("sending passthrough to {},{}: {}".format(x,y,m))
 		send_passthrough(m, x, y)
  
 	elif msg.startswith("MATSIZE"):
-		x, y = msg.split(":")[-1].split(",")
+		x, y = msg.split(";")[-1].split(",")
 		print("Matsize : {} {}".format(x, y))
 		matsize = [int(x), int(y)]
 
@@ -108,6 +129,10 @@ def handle_receive(msg, d):
 		send_moving_xy(id[0] - 1, id[1], text, color=color, speed=speed)
 		afficher_texte(text, color, speed)
 
+	elif msg.startswith("IMAGE"):
+		print("IMAGE LEN : {}".format(len(msg_bytes[6:])))
+		img = data_to_color16(msg_bytes[6:])
+		disp_img_data(img)
 
 # send_text_xy(1,0,text,speed=speed);time.sleep(speed*13);afficher_texte(text,speed=speed)
 
@@ -119,9 +144,9 @@ afficher_texte("Ready", VERT, speed=0.01)
 while True:
 
 	for d in [N, S, E, O]:
-		msg = recevoir_msg(d)
+		msg_bytes = recevoir_msg(d)
 
-		if msg == b"": continue
+		if msg_bytes == b"": continue
 
-		msg = msg_to_str(msg)
-		handle_receive(msg, d)
+		msg = msg_to_str(msg_bytes)
+		handle_receive(msg, msg_bytes, d)