Openmv _thread module support?

OpenMV Products
#1

In OPENMV2 board, try to utilize the mpy thread functionality. Upset, the function is not working fine. three thread are scheduled by around 10s interval. Code as below:

import pyb
import time
import _thread

def led(id, dt):
    while 1:
        pyb.LED(id).toggle()
        time.sleep(dt)

#led(2, 1000)   
_thread.start_new_thread(led, (1, 1000))
_thread.start_new_thread(led, (2, 1000))
_thread.start_new_thread(led, (3, 1000))

By comparing with pyboard, after enable the _thread module in mpconfiguration.h, the _thread func working well. thread are scheduling as multi-thread working.
in mpconfiguration.h for pyboard

#define MICROPY_PY_THREAD           (1)
#define MICROPY_PY_THREAD_GIL       (1)

Thus, whether there is extra more configuration needed in OpenMV project to enable the thread function?
Kindly waiting for your support

#2

Threading doesn’t work very well with our code, probably due to this bug with pendsv handler:

#3

Hi, it here any plan of the problem fix? that is very upset the thread not work. some porting code need to adapt by this.

#4

Also tested on micropython trunk. mutlithread is working fine. :stuck_out_tongue:

#5

It works in Micropyhton because they don’t use this patch, we use this patch because this bug affects the IDE (causes the camera to crash when the script is started/stopped). There’s No plan to support threading before this issue is fixed in Micropython first.

#6

would you help to highlight the patch. in my work, multithread support is more important than OPENMV IDE works. so I tend to remove that patch temporarily.

#7
#8

Thanks iabdalkader, but after remove this patch, multithread in OPENMV board is still not working fine. is that so, before this patch, openmv can support multthread before? or anything else I missed