[SOLVED] Photon not updating with new code

Troubleshooting
1

Mod edit (@harrisonhjones): Solution: see this post

I’m doing quite a big project with the Blynk library (the code now haves 500 lines), and i have this annoying issue where i need to enter DFU mode all the time just to update the code. When i flash a new code in the web API it shows no problems, but when i check if the code was actually updated, it’s just running the old code. The only workaround was entering DFU mode. Am i doing something wrong?

2

@NicolasCaous, your code may be preventing the OTA from properly occurring. I believe there was a discussion on this in another topic, referring to using system events to detect when an OTA is pending so you can “park” your code.

3

Uhmm, so what do i need to write in the code in order to make OTA fuction properly?

4

The easiest is to try enabling system threading and see if that fixes your problem.

5

That is already part of my code

6

Ah, in that case you’ll want to try @peekay123’s solution. Somewhere in your mainloop see if OTA is pending, if so, just wait for a little while, doing nothing else, so the OTA will trigger (ie “park your code”)

7

Since it works on DFU, i maybe can trigger it using System.dfu(true); I can do it via the Blynk terminal i have setup, do you think it will work?

8

@NicolasCaous, I haven’t tried this myself since I use a Particle.function() to put my devices in “park” mode waiting on an OTA (among other things). Take a look here:

https://docs.particle.io/reference/firmware/photon/#ota-updates

9

But, i don’t get it how to code this fuction.

10 
void loop() {
    if(System.updatesPending()) {
        //DO NOTHING
    } else {
        //DO STUFF
    }
}

Is it like this?

11

@NicolasCaous, give it a shot. I would call Particle.process() in a while() loop in “do nothing” for good measure (system will reset after OTA).

12

For that i need SYSTEM_MODE(SEMI-AUTOMATIC);?

13

It didn’t worked, i tried like that :

void loop() {
    if(System.updatesPending()) {
        //DO NOTHING
    } else {
        //DO STUFF
    }
}

and like that:

if(System.updatesPending()) {
    while(true) {
        Particle.process();
    }
}
14

It worked! I solved my problem like this:

if(System.updatesPending()) {
    while(true) {
        Particle.process();
    }
}

Thanks @peekay123 and @harrisonhjones for the help! Weird, those first 2 tries should have worked…

3 Likes
15

Hmm, I don't really see the particular difference between the not working

and the working

Can you point me to that?

16

@ScruffR Made some changes in other parts of the code that could be interfering (can’t post because it’s GIGANTIC)

1 Like