Is it possible to use ESP8266's OTA capabilities?
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@tekka thanks a lot for that info. I already tried that some time ago and gave up.
I flashed the OTA gateway and it works fine. Only when trying to ota upload I get problems. The Arduino IDE says
[ERROR]: No response from deviceand in the serial console I see the following:0;255;3;0;9;read: 1-1-0 s=1,c=1,t=1,pt=7,l=5,sg=0:39.1 sleep disable Error[1]: Begin Failed 0;255;3;0;9;read: 1-1-0 s=2,c=1,t=0,pt=7,l=5,sg=0:23.8Do you know whats happening there?
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@tekka did you used password protection for OTA update or any other security feature? Did you change anything in the sketch except SSID and password for wifi?
@Anduril No, I simply followed these instructions:
https://github.com/esp8266/Arduino/blob/master/doc/ota_updates/readme.md and used this sketch for testing:
https://github.com/mysensors/Arduino/tree/development/libraries/MySensors/examples/GatewayESP8266OTA -
@tekka do you have and NodeMCU Devkit 0.9 or 1.0? I have a 1.0 and get the error. But I use it with fixed IP on the gateway sketch, maybe that's a problem. It uploads ok via serial. But when uploading via wifi (changed static ip for testing) it stuck. Maybe I will try it with dhcp enabled.
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@tekka do you have and NodeMCU Devkit 0.9 or 1.0? I have a 1.0 and get the error. But I use it with fixed IP on the gateway sketch, maybe that's a problem. It uploads ok via serial. But when uploading via wifi (changed static ip for testing) it stuck. Maybe I will try it with dhcp enabled.
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@tekka did you changed any of the standard settings for ESP flashing? I simply updated ESP8266 library and reflashed, but I get an reboot loop. In the serial monitor I see:
0‚~?–4“Ò¶£ÿOAaû0;255;3;0;9;Starting gateway (RNNGE-, 2.0.0-beta) 0;255;3;0;9;Radio init successful. scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 2 cnt connected with mDjEKlujYacByG5JtxlY, channel 1 ip:192.168.38.19,mask:255.255.255.0,gw:192.168.38.1 .IP: 192.168.38.19 ¥üÊæ” ×Åü1¤ñþ0;255;3;0;9;Starting gateway (RNNGE-, 2.0.0-beta) 0;255;3;0;9;Radio init successful. scandone state: 0 -> 2 (b0)When going back to 2.0.0 it works without problems. Here my settings for flashing:

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@tekka did you changed any of the standard settings for ESP flashing? I simply updated ESP8266 library and reflashed, but I get an reboot loop. In the serial monitor I see:
0‚~?–4“Ò¶£ÿOAaû0;255;3;0;9;Starting gateway (RNNGE-, 2.0.0-beta) 0;255;3;0;9;Radio init successful. scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 2 cnt connected with mDjEKlujYacByG5JtxlY, channel 1 ip:192.168.38.19,mask:255.255.255.0,gw:192.168.38.1 .IP: 192.168.38.19 ¥üÊæ” ×Åü1¤ñþ0;255;3;0;9;Starting gateway (RNNGE-, 2.0.0-beta) 0;255;3;0;9;Radio init successful. scandone state: 0 -> 2 (b0)When going back to 2.0.0 it works without problems. Here my settings for flashing:

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I'm trying to use the serial monitor but I'm always ask entering a password? Although I didn't used one?
Reflashing sketch via OTA worked without any issues.
Edit: Tried to use a real OTA password and it's still not working although I'm using the correct. ESP8266 Tools 2.2.0
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to my last knowledge this feature is implemented but not working. If you want to see the serial monitor you have to connect physically.
Regarding the bootloops: how you structure your code seems to have an effect. If you have busy-waits in your code, you're more likely to encounter the WDT timeout. I restructured my code to be more interrupt driven and to complete more frequent cycles through the main loop(). After doing that, the WDT timeouts stopped.
That said, I don't know whether your bootloop is caused by a WDT timeout or something else. At least in my case, the debug messages being printed in the serial window specifically mentioned WDT being involved.
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I presume debugging via network is not supported, I read some posts on Github but couldn't be sure if it was implemented?
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I presume debugging via network is not supported, I read some posts on Github but couldn't be sure if it was implemented?
By debugging, do you mean looking at the serial console output over the network, or something else?
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By debugging, do you mean looking at the serial console output over the network, or something else?
@NeverDie said:
By debugging, do you mean looking at the serial console output over the network, or something else?
Yes, serial monitor via network within IDE...