main: enforce event-driven behavior; run selected pattern once per message; clarify comments; fix pattern lookup

src/main.py

@@ -29,14 +29,21 @@ def main():
     wdt = machine.WDT(timeout=10000)
     wdt.feed()
     while True:
-        # patterns.tick()
+        # advance pattern based on its own returned schedule
+        # due = patterns.tick(due)
         wdt.feed()
-        host, msg = e.recv(0)
-        if msg: 
-            try:
-                data = json.loads(msg)
-                print(data)
 
+        # Drain all pending packets and only process the latest
+        last_msg = None
+        while True:
+            host, msg = e.recv(0)
+            if not msg:
+                break
+            last_msg = msg
+
+        if last_msg:
+            try:
+                data = json.loads(last_msg)
                 defaults = data.get("d", {})
                 bar = data.get(settings.get("name"), {})
 
@@ -44,18 +51,18 @@ def main():
                 patterns.delay = bar.get("delay", defaults.get("delay", patterns.delay))
                 colors = bar.get("colors", defaults.get("colors", patterns.colors))
                 patterns.colors = [tuple(int(color[i:i+2], 16) for i in settings.color_order) for color in colors]
-                # patterns.select(bar.get("pattern", defaults.get("pattern", "off")))
                 patterns.n1 = bar.get("n1", defaults.get("n1", patterns.n1))
                 patterns.n2 = bar.get("n2", defaults.get("n2", patterns.n2))
                 patterns.step = bar.get("pattern_step", defaults.get("step", patterns.step))
+
                 selected_pattern = bar.get("pattern", defaults.get("pattern", "off"))
                 if selected_pattern in patterns.patterns:
+                    # Run the selected pattern ONCE in response to this message. Do not auto-tick elsewhere.
                     patterns.patterns[selected_pattern]()
                 else:
                     print(f"Pattern {selected_pattern} not found")
-
-            except:
-                print(f"Failed to load espnow data {msg}")
+            except Exception as ex:
+                print(f"Failed to load espnow data {last_msg}: {ex}")
                 continue