Split into pattern and low level methods

src/patterns.py

@@ -22,7 +22,8 @@ class Patterns:
             "flicker": self.flicker_step,
             "scanner": self.scanner_step, # New: Single direction scanner
             "bidirectional_scanner": self.bidirectional_scanner_step, # New: Bidirectional scanner
-            "external": None
+            "external": None,
+            "pulse": self.pulse
         }
         self.selected = selected
         # Ensure colors list always starts with at least two for robust transition handling
@@ -394,3 +395,23 @@ class Patterns:
                 self.pattern_step = 0 # Start moving forward from the first LED
 
             self.last_update = current_time
+
+    def pulse(self):
+        if self.pattern_step == 0:
+            self.fill(self.apply_brightness(self.colors[0]))
+            self.pattern_step = 1
+            self.last_update = utime.ticks_ms()
+        if utime.ticks_diff(utime.ticks_ms(), self.last_update) > self.delay:
+            self.fill((0, 0, 0))
+
+
+if __name__ == "__main__":
+    import time
+    from machine import WDT
+    wdt = WDT(timeout=2000)  # Enable watchdog with a 2 second timeout
+    p = Patterns(pin=10, num_leds=200, color1=(255,0,0), color2=(0,0,255), brightness=127, selected="bidirectional_scanner", delay=50)
+    p.select("pulse")
+    for i in range(1000):
+        p.tick()
+        wdt.feed()
+        time.sleep_ms(1)