Add preset persistence and startup default.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/main.py

@@ -10,6 +10,11 @@ settings = Settings()
 print(settings)
 
 presets = Presets(settings["led_pin"], settings["num_leds"])
+presets.load()
+startup_preset = settings.get("startup_preset")
+if startup_preset:
+    presets.select(startup_preset)
+    print(f"Selected startup preset: {startup_preset}")
 
 wdt = WDT(timeout=10000)
 wdt.feed()
@@ -31,7 +36,7 @@ while True:
         # Only handle messages with the expected version.
         if data.get("v") != "1":
             continue
-        print(data)
+        # print(data)
         # Global brightness (0–255) for this device
         if "b" in data:
             try:
@@ -39,11 +44,12 @@ while True:
             except (TypeError, ValueError):
                 pass
         if "presets" in data:
-            for name, preset_data in data["presets"].items():
+            for id, preset_data in data["presets"].items():
                 # Convert hex color strings to RGB tuples and reorder based on device color order
                 if "c" in preset_data:
                     preset_data["c"] = convert_and_reorder_colors(preset_data["c"], settings)
-                presets.edit(name, preset_data)
+                presets.edit(id, preset_data)
+                print(f"Edited preset {id}: {preset_data.get('name', '')}")
         if settings.get("name") in data.get("select", {}):
             select_list = data["select"][settings.get("name")]
             # Select value is always a list: ["preset_name"] or ["preset_name", step]
@@ -51,3 +57,9 @@ while True:
                 preset_name = select_list[0]
                 step = select_list[1] if len(select_list) > 1 else None
                 presets.select(preset_name, step=step)
+        if "default" in data:
+            settings["startup_preset"] = data["default"]
+            print(f"Set startup preset to: {data['default']}")
+            settings.save()
+        if "save" in data:
+            presets.save()

src/preset.py

@@ -22,3 +22,58 @@ class Preset:
         for key, value in data.items():
             setattr(self, key, value)
         return True
+
+    @property
+    def pattern(self):
+        return self.p
+
+    @pattern.setter
+    def pattern(self, value):
+        self.p = value
+
+    @property
+    def delay(self):
+        return self.d
+
+    @delay.setter
+    def delay(self, value):
+        self.d = value
+
+    @property
+    def brightness(self):
+        return self.b
+
+    @brightness.setter
+    def brightness(self, value):
+        self.b = value
+
+    @property
+    def colors(self):
+        return self.c
+
+    @colors.setter
+    def colors(self, value):
+        self.c = value
+
+    @property
+    def auto(self):
+        return self.a
+
+    @auto.setter
+    def auto(self, value):
+        self.a = value
+
+    def to_dict(self):
+        return {
+            "p": self.p,
+            "d": self.d,
+            "b": self.b,
+            "c": self.c,
+            "a": self.a,
+            "n1": self.n1,
+            "n2": self.n2,
+            "n3": self.n3,
+            "n4": self.n4,
+            "n5": self.n5,
+            "n6": self.n6,
+        }

src/presets.py

@@ -2,6 +2,7 @@ from machine import Pin
 from neopixel import NeoPixel
 from preset import Preset
 from patterns import Blink, Rainbow, Pulse, Transition, Chase, Circle
+import json
 
 
 class Presets:
@@ -28,6 +29,33 @@ class Presets:
             "circle": Circle(self).run,
         }
 
+    def save(self):
+        """Save the presets to a file."""
+        with open("presets.json", "w") as f:
+            json.dump({name: preset.to_dict() for name, preset in self.presets.items()}, f)
+        return True
+
+    def load(self):
+        """Load presets from a file."""
+        try:
+            with open("presets.json", "r") as f:
+                data = json.load(f)
+        except OSError:
+            # Create an empty presets file if missing
+            self.presets = {}
+            self.save()
+            return True
+
+        self.presets = {}
+        for name, preset_data in data.items():
+            if "c" in preset_data:
+                preset_data["c"] = [tuple(color) for color in preset_data["c"]]
+            self.presets[name] = Preset(preset_data)
+        if self.presets:
+            print("Loaded presets:")
+            #for name in sorted(self.presets.keys()):
+            #    print(f"  {name}: {self.presets[name].to_dict()}")
+        return True
        
     def edit(self, name, data):
         """Create or update a preset with the given name."""

src/settings.py

@@ -19,6 +19,7 @@ class Settings(dict):
         self["name"] = f"led-{ubinascii.hexlify(network.WLAN(network.AP_IF).config('mac')).decode()}"
        
         self["debug"] = False
+        self["startup_preset"] = None
 
     def save(self):
         try:

test/test_espnow_receive.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 """Test ESPNow receive functionality - runs on MicroPython device."""
 import json
+import os
 import utime
 from settings import Settings
 from presets import Presets
@@ -621,6 +622,45 @@ def test_select_with_step():
     print("  ✓ Step set correctly when switching presets")
 
 
+def test_preset_save_load():
+    """Test saving and loading presets to/from JSON."""
+    print("\nTest 10: Preset save/load")
+    settings = Settings()
+    patterns = Presets(settings["led_pin"], settings["num_leds"])
+    
+    patterns.edit("saved_preset", {
+        "p": "blink",
+        "d": 150,
+        "b": 200,
+        "c": [(1, 2, 3), (4, 5, 6)],
+        "a": False,
+        "n1": 1,
+        "n2": 2,
+        "n3": 3,
+        "n4": 4,
+        "n5": 5,
+        "n6": 6,
+    })
+    assert patterns.save(), "Save should return True"
+
+    reloaded = Presets(settings["led_pin"], settings["num_leds"])
+    assert reloaded.load(), "Load should return True"
+    
+    preset = reloaded.presets.get("saved_preset")
+    assert preset is not None, "Preset should be loaded"
+    assert preset.p == "blink", "Pattern should be blink"
+    assert preset.d == 150, "Delay should be 150"
+    assert preset.b == 200, "Brightness should be 200"
+    assert preset.c == [(1, 2, 3), (4, 5, 6)], "Colors should be restored as tuples"
+    assert preset.a is False, "Auto should be False"
+    assert (preset.n1, preset.n2, preset.n3, preset.n4, preset.n5, preset.n6) == (1, 2, 3, 4, 5, 6), "n1-n6 should match"
+    try:
+        os.remove("presets.json")
+    except OSError:
+        pass
+    print("  ✓ Preset save/load works correctly")
+
+
 def main():
     """Run all tests."""
     print("=" * 60)
@@ -637,6 +677,7 @@ def main():
         test_switch_presets()
         test_beat_functionality()
         test_select_with_step()
+        test_preset_save_load()
         
         print("\n" + "=" * 60)
         print("All tests passed! ✓")