Import led-driver app: pico/ and esp32/ layout

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

pico/src/patterns/chase.py

@@ -0,0 +1,124 @@
+import utime
+
+
+class Chase:
+    def __init__(self, driver):
+        self.driver = driver
+
+    def run(self, preset):
+        """Chase pattern: n1 LEDs of color0, n2 LEDs of color1, repeating.
+        Moves by n3 on even steps, n4 on odd steps (n3/n4 can be positive or negative)"""
+        colors = preset.c
+        if len(colors) < 1:
+            # Need at least 1 color
+            return
+
+        # Access colors, delay, and n values from preset
+        if not colors:
+            return
+        # If only one color provided, use it for both colors
+        if len(colors) < 2:
+            color0 = colors[0]
+            color1 = colors[0]
+        else:
+            color0 = colors[0]
+            color1 = colors[1]
+
+        color0 = self.driver.apply_brightness(color0, preset.b)
+        color1 = self.driver.apply_brightness(color1, preset.b)
+
+        n1 = max(1, int(preset.n1))  # LEDs of color 0
+        n2 = max(1, int(preset.n2))  # LEDs of color 1
+        n3 = int(preset.n3)  # Step movement on even steps (can be negative)
+        n4 = int(preset.n4)  # Step movement on odd steps (can be negative)
+
+        segment_length = n1 + n2
+
+        # Calculate position from step_count
+        step_count = self.driver.step
+        # Position alternates: step 0 adds n3, step 1 adds n4, step 2 adds n3, etc.
+        if step_count % 2 == 0:
+            # Even steps: (step_count//2) pairs of (n3+n4) plus one extra n3
+            position = (step_count // 2) * (n3 + n4) + n3
+        else:
+            # Odd steps: ((step_count+1)//2) pairs of (n3+n4)
+            position = ((step_count + 1) // 2) * (n3 + n4)
+
+        # Wrap position to keep it reasonable
+        max_pos = self.driver.num_leds + segment_length
+        position = position % max_pos
+        if position < 0:
+            position += max_pos
+
+        # If auto is False, run a single step and then stop
+        if not preset.a:
+            # Clear all LEDs
+            self.driver.n.fill((0, 0, 0))
+
+            # Draw repeating pattern starting at position
+            for i in range(self.driver.num_leds):
+                # Calculate position in the repeating segment
+                relative_pos = (i - position) % segment_length
+                if relative_pos < 0:
+                    relative_pos = (relative_pos + segment_length) % segment_length
+
+                # Determine which color based on position in segment
+                if relative_pos < n1:
+                    self.driver.n[i] = color0
+                else:
+                    self.driver.n[i] = color1
+
+            self.driver.n.write()
+
+            # Increment step for next beat
+            self.driver.step = step_count + 1
+
+            # Allow tick() to advance the generator once
+            yield
+            return
+
+        # Auto mode: continuous loop
+        # Use transition_duration for timing and force the first update to happen immediately
+        transition_duration = max(10, int(preset.d))
+        last_update = utime.ticks_ms() - transition_duration
+
+        while True:
+            current_time = utime.ticks_ms()
+            if utime.ticks_diff(current_time, last_update) >= transition_duration:
+                # Calculate current position from step_count
+                if step_count % 2 == 0:
+                    position = (step_count // 2) * (n3 + n4) + n3
+                else:
+                    position = ((step_count + 1) // 2) * (n3 + n4)
+
+                # Wrap position
+                max_pos = self.driver.num_leds + segment_length
+                position = position % max_pos
+                if position < 0:
+                    position += max_pos
+
+                # Clear all LEDs
+                self.driver.n.fill((0, 0, 0))
+
+                # Draw repeating pattern starting at position
+                for i in range(self.driver.num_leds):
+                    # Calculate position in the repeating segment
+                    relative_pos = (i - position) % segment_length
+                    if relative_pos < 0:
+                        relative_pos = (relative_pos + segment_length) % segment_length
+
+                    # Determine which color based on position in segment
+                    if relative_pos < n1:
+                        self.driver.n[i] = color0
+                    else:
+                        self.driver.n[i] = color1
+
+                self.driver.n.write()
+
+                # Increment step
+                step_count += 1
+                self.driver.step = step_count
+                last_update = current_time
+
+            # Yield once per tick so other logic can run
+            yield