m5/MicroPythonOS
0
0
Fork 0
mirror of https://github.com/m5stack/MicroPythonOS.git synced 2026-05-20 11:51:27 -07:00
Code Issues Packages Projects Releases Wiki Activity

camtest: use taskhandler callback, more stable

Browse Source
This commit is contained in:
Thomas Farstrike
2025-05-16 09:10:14 +02:00
parent 171865a9e7
commit fb7f332221
1 changed files with 13 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
internal_filesystem/apps/com.example.camtest/assets/camtest.py
+13 -27
View File
@@ -128,21 +128,21 @@ def qr_button_click(e):
else:
stop_qr_decoding()
def try_capture():
global current_cam_buffer, image_dsc, image, use_webcam
def try_capture(event, data):
global current_cam_buffer, image_dsc, image, use_webcam, keepgoing
if not keepgoing:
print("try_capture called while keepgoing==False, aborting...")
return
if use_webcam:
current_cam_buffer = webcam.capture_frame(cam, "rgb565")
elif cam.frame_available():
current_cam_buffer = cam.capture()
if current_cam_buffer and len(current_cam_buffer):
if current_cam_buffer and len(current_cam_buffer) and keepgoing:
image_dsc.data = current_cam_buffer
#image.invalidate() # does not work so do this:
image.set_src(image_dsc)
if not use_webcam:
cam.free_buffer() # Free the old buffer
else:
print("No image received from camera, ignoring...")
return
def build_ui():
@@ -257,36 +257,22 @@ if cam:
status_label_text = ""
qr_button.remove_flag(lv.obj.FLAG.HIDDEN)
snap_button.remove_flag(lv.obj.FLAG.HIDDEN)
import task_handler
th.add_event_cb(try_capture, task_handler.TASK_HANDLER_STARTED)
# Task handler needs to be updated from this app's thread, otherwise it causes concurrency issues
#th.disable()
#time.sleep_ms(500)
while appscreen == lv.screen_active() and keepgoing is True:
#print("cam keeps going...")
if status_label.get_text() != status_label_text:
status_label.set_text(status_label_text)
if status_label_text:
status_label_cont.remove_flag(lv.obj.FLAG.HIDDEN)
else:
status_label_cont.add_flag(lv.obj.FLAG.HIDDEN)
#lv.task_handler()
time.sleep_ms(5)
#lv.tick_inc(5)
if cam:
th.disable()
try_capture()
th.enable()
while appscreen == lv.screen_active() and keepgoing:
time.sleep_ms(100)
print("camtest.py: stopping...")
if cam:
th.remove_event_cb(try_capture)
if use_webcam:
webcam.deinit(cam)
elif cam:
cam.deinit()
print("camtest.py: showing launcher...")
show_launcher()
#th.enable()