A memory BUG found

OpenMV Products
1

In some cases, the running speed will decrease.
My device is openmv4p with 4.3.1 firmware.
In the following code, delete any 'sensor.alloc_ extra_ fb ‘related code, or deleting’ lcd. Init ', can increase the frame rate to 45, otherwise only 28.They should not be related.Is there any bug in memory

import sensor, image, time,lcd

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.B64X64)

clock = time.clock()

lcd.init(width=320,height=240,triple_buffer=True)

icon0=sensor.alloc_extra_fb(100,125,sensor.RGB565)
icon1=sensor.alloc_extra_fb(100,125,sensor.RGB565)
icon2=sensor.alloc_extra_fb(100,125,sensor.RGB565)
icon3=sensor.alloc_extra_fb(100,125,sensor.RGB565)
icon4=sensor.alloc_extra_fb(100,125,sensor.RGB565)
icon5=sensor.alloc_extra_fb(100,125,sensor.RGB565)

extra_fb = sensor.alloc_extra_fb(sensor.width(), sensor.height(), sensor.RGB565)
extra_fb.replace(sensor.snapshot())

while True:
    clock.tick()
    img = sensor.snapshot()
    displacement = extra_fb.find_displacement(img)
    extra_fb.replace(img)
    print(clock.fps())
2

The camera should have brought memory since the resolution is low.

Can you just set the number of buffers manually with the set frame buffers command?

It’s slowing down because it’s switching from triple buffering to single buffering.

Also, make sure if you have the OpenMV Cam plus that it actually is running the plus firmware and not the non plus firmware. We had some units get programmed with the wrong firmware which effectively disables the SDRAM on it and gives you much less RAM.