Timed loop

[liudr]

If I wanted to run timed loop, say collect data every 60 seconds, and quit if a button is pressed at any time, how do I do it properly so background tasks are not affected by an infinite loop?

On an arduino I would have to check every task I need to do within the loop() function and check the time tick to see if 60 seconds expired or not. If I do the same in micropython, I am afraid that it will waste a lot of cpu resources and don't know how the background routines will be treated, say if I have an infinite loop like this:

Code: Select all

f=open()
start=rtc.now()
while True:
    if now-start<60:
        if button_pressed:
            close data file
            break
    collect data and save to file

Also, if I use interrupt to capture a button push, then I can't act inside the interrupt routine to close file because the foreground routine could be using the file.

[OutoftheBOTS_]

If I wanted to run timed loop, say collect data every 60 seconds

I do believe that your using Laboris firmware so it has timer callbacks for this see wiki https://github.com/loboris/MicroPython_ ... wiki/timer

Also, if I use interrupt to capture a button push, then I can't act inside the interrupt routine to close file because the foreground routine could be using the file.

I normally use a global flag where the interrupt will change the flag then in your main program you test the condition of the flag at an appropriate time in your program and take the appropriate action.