Add segmented_movement pattern with alternating forward/backward movement

- Add n4 parameter support to main.py ESP NOW receiver
- Implement segmented_movement pattern with configurable parameters:
  * n1: segment length (number of LEDs per segment)
  * n2: spacing between segments
  * n3: forward movement speed (positions per beat)
  * n4: backward movement speed (positions per beat)
- Pattern alternates between forward and backward movement each beat
- If only n3 or n4 is set, moves in that direction every beat
- Draws repeating segments with spacing across entire LED strip
- Add Pipfile script to run dev.py directly with arguments

Pipfile

@@ -16,4 +16,4 @@ uvicorn = "*"
 python_version = "3.12"
 
 [scripts]
-dev = 'watchfiles "./dev.py /dev/ttyACM0 src reset follow"'
+dev = "./dev.py"

src/main.py

@@ -49,6 +49,7 @@ def main():
         if last_msg:
             try:
                 data = json.loads(last_msg)
+                print(data)
                 defaults = data.get("d", {})
                 bar = data.get(settings.get("name"), {})
                 
@@ -62,6 +63,7 @@ def main():
                 patterns.n1 = bar.get("n1", defaults.get("n1", patterns.n1))
                 patterns.n2 = bar.get("n2", defaults.get("n2", patterns.n2))
                 patterns.n3 = bar.get("n3", defaults.get("n3", patterns.n3))
+                patterns.n4 = bar.get("n4", defaults.get("n4", patterns.n4))
                 patterns.step = bar.get("s", defaults.get("s", patterns.step))
                 
                 # Only execute pattern if it's a beat message

src/patterns.py

@@ -13,6 +13,7 @@ class Patterns(PatternBase): # Inherit from PatternBase
         self.n1 = 0 # Default start of fill range
         self.n2 = self.num_leds - 1 # Default end of fill range
         self.n3 = 1 # Default step factor
+        self.n4 = 0
         self.oneshot = False # New: One-shot flag for patterns like fill_range
         self.patterns = {
             "on": self.on,
@@ -25,6 +26,7 @@ class Patterns(PatternBase): # Inherit from PatternBase
             "rainbow": self.rainbow,
             "specto": self.specto,
             "radiate": self.radiate,
+            "segmented_movement": self.segmented_movement,
             # Shortened pattern names for optimized JSON payloads
             "o": self.off,
             "f": self.flicker,
@@ -35,6 +37,7 @@ class Patterns(PatternBase): # Inherit from PatternBase
             "r": self.rainbow,
             "s": self.specto,
             "rd": self.radiate,
+            "sm": self.segmented_movement,
         }    
         self.step = 0
 
@@ -286,6 +289,112 @@ class Patterns(PatternBase): # Inherit from PatternBase
         self.run = False
         return self.delay
 
+    def segmented_movement(self):
+        """
+        Segmented movement pattern that alternates forward and backward.
+        
+        Parameters:
+        n1: Number of LEDs per segment  
+        n2: Spacing between segments (currently unused)
+        n3: Forward movement steps per beat
+        n4: Backward movement steps per beat
+        
+        Movement: Alternates between moving forward n3 steps and backward n4 steps each beat.
+        """
+        try:
+            # Get parameters
+            segment_length = max(1, int(self.n1)) if hasattr(self, 'n1') else 3
+            segment_spacing = max(0, int(self.n2)) if hasattr(self, 'n2') else 2  
+            forward_step = max(0, int(self.n3)) if hasattr(self, 'n3') else 1
+            backward_step = max(0, int(self.n4)) if hasattr(self, 'n4') else 0
+            
+            # Initialize position tracking if not exists
+            if not hasattr(self, '_sm_position'):
+                self._sm_position = 0
+                self._sm_last_step = -1
+            
+            # Check if this is a new beat (step changed)
+            if self.step != self._sm_last_step:
+                # Alternate between forward and backward movement
+                if self.step % 2 == 0:
+                    # Even steps: move forward (if n3 > 0)
+                    if forward_step > 0:
+                        self._sm_position += forward_step
+                        direction = "FWD"
+                    elif backward_step > 0:
+                        # If no forward, still move backward
+                        self._sm_position -= backward_step
+                        direction = "BWD"
+                    else:
+                        direction = "NONE"
+                else:
+                    # Odd steps: move backward (if n4 > 0)
+                    if backward_step > 0:
+                        self._sm_position -= backward_step
+                        direction = "BWD"
+                    elif forward_step > 0:
+                        # If no backward, still move forward
+                        self._sm_position += forward_step
+                        direction = "FWD"
+                    else:
+                        direction = "NONE"
+                
+                # Wrap position around strip length
+                strip_length = self.num_leds + segment_length
+                self._sm_position = self._sm_position % strip_length
+                
+                # Update last step
+                self._sm_last_step = self.step
+                
+                # DEBUG: Print every beat
+                if self.step % 5 == 0:
+                    print(f"SM: step={self.step}, dir={direction}, n3={forward_step}, n4={backward_step}, pos={self._sm_position}")
+            
+            # Clear all LEDs
+            self.fill((0, 0, 0))
+            
+            # Get color
+            color = self.apply_brightness(self.colors[0])
+            
+            # Calculate segment width (segment + spacing)
+            segment_width = segment_length + segment_spacing
+            
+            # Draw multiple segments across the strip
+            if segment_width > 0:
+                base_position = int(self._sm_position) % segment_width
+                
+                # Draw segments starting from base_position
+                current_pos = base_position
+                while current_pos < self.num_leds:
+                    # Draw segment from current_pos to current_pos + segment_length
+                    segment_end = min(current_pos + segment_length, self.num_leds)
+                    for i in range(max(0, current_pos), segment_end):
+                        self.n[i] = color
+                    
+                    # Move to next segment position
+                    current_pos += segment_width
+                
+                # Handle wrap-around: draw segments that start before 0
+                wrap_position = base_position - segment_width
+                while wrap_position > -segment_length:
+                    if wrap_position < 0:
+                        # Partial segment at start
+                        segment_end = min(wrap_position + segment_length, self.num_leds)
+                        for i in range(0, segment_end):
+                            self.n[i] = color
+                    wrap_position -= segment_width
+            
+            self.n.write()
+            return self.delay
+            
+        except Exception as e:
+            # DEBUG: Print error
+            print(f"SM Error: {e}")
+            # If anything goes wrong, turn off LEDs and return
+            self.fill((0, 0, 0))
+            self.n.write()
+            return self.delay
+
 
 if __name__ == "__main__":
     import time 

src/settings.py

@@ -13,8 +13,8 @@ class Settings(dict):
         else: self.color_order = (1, 3, 5)
 
     def set_defaults(self):
-        self["led_pin"] = 4
-        self["num_leds"] = 59
+        self["led_pin"] = 10
+        self["num_leds"] = 119
         self["color_order"] = "rgb"
         self["name"] = f"103"