From 8db9d77ba9cc6c3bc2b13676815f8adf3298ffb7 Mon Sep 17 00:00:00 2001
From: Thomas Farstrike <thomasverstreken@protonmail.com>
Date: Sat, 19 Apr 2025 20:48:36 +0200
Subject: [PATCH] Naive approach crashes too

---
 appstore.mpy | 90 ++++++++++++++--------------------------------------
 1 file changed, 23 insertions(+), 67 deletions(-)

diff --git a/appstore.mpy b/appstore.mpy
index 07196605..1f1ca407 100644
--- a/appstore.mpy
+++ b/appstore.mpy
@@ -159,43 +159,11 @@ display.set_rotation(lv.DISPLAY_ROTATION._90)
 import lvgl as lv
 import _thread
 import utime
-import gc
-
-# Create a list and lock for scheduling LVGL tasks
-lvgl_task_queue = []
-queue_lock = _thread.allocate_lock()
-
-# Function to process LVGL tasks (runs in a separate thread)
-def process_lvgl_tasks():
-    while True:
-        task = None
-        with queue_lock:
-            if lvgl_task_queue:
-                task = lvgl_task_queue.pop(0)
-        if task is None:
-            utime.sleep_ms(10)  # Avoid tight loop
-            continue
-        try:
-            print("Processing task")
-            task()
-            print("Task completed")
-        except Exception as e:
-            print("LVGL task error:", e)
-        gc.collect()
-        print("Task processor free memory:", gc.mem_free())
-
-# Function to run task processor in a dedicated thread
-def task_processor_thread():
-    print("Task processor thread started")
-    try:
-        process_lvgl_tasks()
-    except Exception as e:
-        print("Task processor error:", e)
 
 # Create a subwindow for the child script
 screen = lv.screen_active()
 subwindow = lv.obj(screen)
-subwindow.set_size(120, 100)  # Larger for visibility
+subwindow.set_size(120, 100)
 subwindow.align(lv.ALIGN.TOP_LEFT, 10, 10)
 subwindow.set_style_bg_color(lv.color_hex(0xDDDDDD), lv.PART.MAIN)
 
@@ -208,14 +176,9 @@ parent_label.align(lv.ALIGN.BOTTOM_MID, 0, -10)
 def execute_script(script_source, lvgl_obj):
     def thread_func():
         try:
-            def schedule_lvgl_task(task):
-                with queue_lock:
-                    print("Queuing task")
-                    lvgl_task_queue.append(task)
             script_globals = {
                 'lv': lv,
                 'subwindow': lvgl_obj,
-                'schedule_lvgl_task': schedule_lvgl_task,
                 'utime': utime
             }
             print("Child thread: Executing script")
@@ -229,37 +192,23 @@ def execute_script(script_source, lvgl_obj):
     except Exception as e:
         print("Error starting child thread:", e)
 
-# Child script buffer: updates a label every 2 seconds
+# Child script buffer: directly updates a label every second (unsafe)
 script_buffer = """
-def update_child():
-    print("Child thread: Creating label")
-    label = lv.label(subwindow)
-    label.set_text("Child: 0")
-    label.set_style_text_font(lv.font_montserrat_12, 0)  # Smaller font
-    label.align(lv.ALIGN.CENTER, 0, 0)
-    count = 0
-    while True:
-        count += 1
-        print("Child thread: Preparing update", count)
-        def set_label_text():
-            print("Child task: Updating label to", count)
-            label.set_text(f"Child: {count}")
-        schedule_lvgl_task(set_label_text)
-        utime.sleep_ms(2000)
-schedule_lvgl_task(update_child)
+print("Child thread: Creating label")
+label = lv.label(subwindow)
+label.set_text("Child: 0")
+label.set_style_text_font(lv.font_montserrat_12, 0)  # Smaller font
+label.align(lv.ALIGN.CENTER, 0, 0)
+count = 0
+while True:
+    count += 1
+    print("Child thread: Updating label to", count)
+    label.set_text(f"Child: {count}")  # Direct LVGL call (unsafe)
+    utime.sleep_ms(1000)
 """
 execute_script(script_buffer, subwindow)
 
-# Start task processor thread
-try:
-    #_thread.stack_size(4096)
-    _thread.start_new_thread(task_processor_thread, ())
-except Exception as e:
-    print("Error starting task processor thread:", e)
-
 # Main loop: update parent label every second
-gc.collect()
-print("Free memory before loop:", gc.mem_free())
 count = 0
 while True:
     count += 1
@@ -268,9 +217,16 @@ while True:
         parent_label.set_text(f"Parent: {count}")
     except Exception as e:
         print("Parent label error:", e)
-    gc.collect()
-    print("Main thread free memory:", gc.mem_free())
-    utime.sleep_ms(1000)  # Parent updates every ~1s
+    utime.sleep_ms(1000)
+
+
+
+
+
+
+
+
+