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Improve robustness with custom exception that does not deinit() the TaskHandler

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This commit is contained in:
Thomas Farstrike
2026-01-09 12:03:33 +01:00
parent c62b30b4d0
commit 304fa1a537
4 changed files with 20 additions and 11 deletions
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internal_filesystem/lib/mpos/main.py
+15 -8
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@@ -51,20 +51,27 @@ focusgroup = lv.group_get_default()
if focusgroup: # on esp32 this may not be set
focusgroup.remove_all_objs() # might be better to save and restore the group for "back" actions
# Can be passed to TaskHandler, currently unused:
# Custom exception handler that does not deinit() the TaskHandler because then the UI hangs:
def custom_exception_handler(e):
print(f"custom_exception_handler called: {e}")
mpos.ui.task_handler.deinit()
print(f"TaskHandler's custom_exception_handler called: {e}")
import sys
sys.print_exception(e) # NOQA
# No need to deinit() and re-init LVGL:
#mpos.ui.task_handler.deinit() # default task handler does this, but then things hang
# otherwise it does focus_next and then crashes while doing lv.deinit()
focusgroup.remove_all_objs()
focusgroup.delete()
lv.deinit()
#focusgroup.remove_all_objs()
#focusgroup.delete()
#lv.deinit()
import sys
if sys.platform == "esp32":
mpos.ui.task_handler = task_handler.TaskHandler(duration=5) # 1ms gives highest framerate on esp32-s3's but might have side effects?
mpos.ui.task_handler = task_handler.TaskHandler(duration=5, exception_hook=custom_exception_handler) # 1ms gives highest framerate on esp32-s3's but might have side effects?
else:
mpos.ui.task_handler = task_handler.TaskHandler(duration=5) # 5ms is recommended for MicroPython+LVGL on desktop (less results in lower framerate)
mpos.ui.task_handler = task_handler.TaskHandler(duration=5, exception_hook=custom_exception_handler) # 5ms is recommended for MicroPython+LVGL on desktop (less results in lower framerate)
# Convenient for apps to be able to access these:
mpos.ui.task_handler.TASK_HANDLER_STARTED = task_handler.TASK_HANDLER_STARTED
mpos.ui.task_handler.TASK_HANDLER_FINISHED = task_handler.TASK_HANDLER_FINISHED
try:
import freezefs_mount_builtin