Spinner test works sortof

apps/com.example.lvgltest/assets/main.py

@@ -1,21 +1,20 @@
-import lvgl as lv
 import time
 import random
-import display_driver  # Replace with your display driver (e.g., ILI9341, ST7796)
 
 # Configuration
 SPINNER_SIZE = 20   # Size of each spinner in pixels
-UPDATE_INTERVAL_MS = 1000  # Add spinner and update metrics every 100ms
+UPDATE_INTERVAL_MS = 3000  # Add spinner and update metrics every 100ms
 
 # Global variables
 spinner_count = 0
 metrics_label = None
 
-def add_spinner_and_update(timer):
-    """Add a new spinner and update on-screen metrics."""
+canary = lv.obj(lv.screen_active())
+canary.add_flag(0x0001) # LV_OBJ_FLAG_HIDDEN is 0x0001
+
+def add_spinner_and_update():
     global spinner_count, metrics_label
     try:
-        # Create spinner with only parent argument
         spinner = lv.spinner(lv.screen_active())
         spinner.set_size(SPINNER_SIZE, SPINNER_SIZE)
         spinner.set_pos(
@@ -27,55 +26,29 @@ def add_spinner_and_update(timer):
         print(f"Failed to create spinner {spinner_count + 1}: {e}")
         return
     
-    # Update metrics
-    if metrics_label:
-        metrics_label.set_text(f"Spinners: {spinner_count}")
-    
+    metrics_label.set_text(f"Spinners: {spinner_count}")
     print(f"Added spinner {spinner_count}")
 
 def run_benchmark():
     global spinner_count, metrics_label
     print("Starting LVGL spinner benchmark...")
     
-    # Initialize LVGL and screen
-    try:
-        lv.init()
-    except Exception as e:
-        print(f"Failed to initialize LVGL: {e}")
-        return
-    
     scr = lv.screen_active()
     scr.set_style_bg_color(lv.color_black(), 0)
     
-    # Create metrics label
-    try:
-        metrics_label = lv.label(scr)
-        metrics_label.set_style_text_color(lv.color_white(), 0)
-        metrics_label.set_style_bg_color(lv.color_black(), 0)
-        metrics_label.set_style_bg_opa(lv.OPA.COVER, 0)
-        metrics_label.set_pos(10, 10)
-        metrics_label.set_text("Spinners: 0")
-    except Exception as e:
-        print(f"Failed to create metrics label: {e}")
-        return
+    metrics_label = lv.label(scr)
+    metrics_label.set_style_text_color(lv.color_white(), 0)
+    metrics_label.set_style_bg_color(lv.color_black(), 0)
+    metrics_label.set_style_bg_opa(lv.OPA.COVER, 0)
+    metrics_label.set_pos(10, 10)
+    metrics_label.set_text("Spinners: 0")
     
-    # Create timer for adding spinners and updating metrics
-    try:
-        lv.timer_create(add_spinner_and_update, UPDATE_INTERVAL_MS, None)
-    except Exception as e:
-        print(f"Failed to create timer: {e}")
-        return
-    
-    # Run indefinitely until user resets the board
-    try:
-        while True:
-            lv.task_handler()
-            time.sleep_ms(10)  # Yield to LVGL tasks
-    except Exception as e:
-        print(f"Test failed: {e}")
+    while canary.get_class():
+        add_spinner_and_update()
+        time.sleep_ms(UPDATE_INTERVAL_MS)
 
-if __name__ == "__main__":
-    try:
-        run_benchmark()
-    except Exception as e:
-        print(f"Error in benchmark: {e}")
+       
+try:
+    run_benchmark()
+except Exception as e:
+    print(f"Error in benchmark: {e}")