Support for 480x480 HDMI display, optimized sensor polling, and touch tools

verify_touch.py

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+import evdev
+import sys
+import select
+
+def main():
+    print("--- Touch/Input Device Verifier ---")
+    
+    # List devices
+    devices = [evdev.InputDevice(path) for path in evdev.list_devices()]
+    
+    if not devices:
+        print("No input devices found! Check permissions (sudo?) or connections.")
+        return
+
+    target_device = None
+    
+    print(f"Found {len(devices)} devices:")
+    for i, dev in enumerate(devices):
+        print(f"  {i}: {dev.name} ({dev.phys}) - {dev.path}")
+        # Look for the known QinHeng device
+        if "CTP_CONTROL" in dev.name or "Touch" in dev.name:
+            target_device = dev
+
+    print("-" * 30)
+
+    if target_device:
+        print(f"Auto-selected likely touch device: {target_device.name}")
+        dev = target_device
+    else:
+        # Fallback to manual selection or just pick the last one? 
+        # For now, let's ask user or pick the first one if interactive
+        try:
+            sel = input(f"Select device ID (0-{len(devices)-1}): ")
+            dev = devices[int(sel)]
+        except:
+             print("Invalid selection. Exiting.")
+             return
+
+    print(f"\nListening to: {dev.name} ({dev.path})")
+    print("Touch the screen now! (Press Ctrl+C to stop)")
+    print("-" * 30)
+
+    try:
+        # Read loop
+        for event in dev.read_loop():
+            if event.type == evdev.ecodes.EV_ABS:
+                absevent = evdev.categorize(event)
+                code = evdev.ecodes.bytype[absevent.event.type][absevent.event.code]
+                if code == "ABS_X":
+                     print(f"X: {absevent.event.value}", end="  ")
+                elif code == "ABS_Y":
+                     print(f"Y: {absevent.event.value}")
+                     sys.stdout.flush()
+            elif event.type == evdev.ecodes.EV_KEY and event.code == 330: # BTN_TOUCH
+                 print(f"Touch {'DOWN' if event.value else 'UP'}")
+
+    except KeyboardInterrupt:
+        print("\nStopped.")
+    except Exception as e:
+        print(f"Error reading device: {e}")
+
+if __name__ == "__main__":
+    main()