Restart loop. Not a power issue

[lolren]

My ESP32 loops at Initializing SBUS, check transmitter & receiver (sbusInverted true / false OK?)... then spits out some gibberish. nothing happens

[TheDIYGuy999]

If you want to use SBUS, change sbusInverted true / false or vice versa. Also make sure, your receiver is powered up

[lolren]

I did. Still nothing. But the problem is actually the restart of the ESP32. Sometimes it doesn't restart and has a different message, but the receiver is still not recognized, no mother what. Will try to order a new ESP32, but this one works with another projects.

[TheDIYGuy999]

and you are using ESP32 board definition version 1.04 as mentioned in the sketch? Otherwise it will crash.

[lolren]

Yes. Thats the problem. Unfortunately, V1.04 is old enough an we cannot buy it, so the solution would be to see where the problem is and, if its not a vital function maybe disable it or change it. My board is 1.05 and I've ordered a 1.1 , and I`m still getting the same issue. The problem is that you cannot pick what board definition you buy, is kinda a lucky dip. Ive notice that the restart loop goes away if I change the platform definition to a newer one (eg. espressif32@3.4.0) but then, ~I get another error, like ([E][WMath.cpp:74] map(): Invalid map input range, min == max), so the code must be changed and adapted to the newer boards definitions.

Regards

[lolren]

I have tried to disable each library, one by one ( and the functions associated with them) in the code. Finally, when I disabled the watchdog function the board stopped restarting. Now, I don`t know yet if the board is frozen and doesn't restart, or it will work, More investigation is needed. Regards

[TheDIYGuy999]

v1.04 is not related to the hardware. It's the board definition, provided by espressif. You have to use 1.04:

[lolren]

Hi. Sorry for the late reply, been busy with the new year😁 I've installed v1.04 , but this didn't change anything. Still getting weird restarts after a few seconds, related to watchdog. Now I think my remote control protocol is not supported But this is ok, as I'm building the unit for a friend of mine that uses a Flysky.

Thank you

[lolren]

Managed to fix the restart loop issue, by disabling the watchdog. But, now with a FLYSKY_FS_I6X , I cannot get the board to sync for some reason. CH 1 signal out of auto calibration range, check transmitter & receiver is the error I get, no matter what I choose from the remote option. Regards

[TheDIYGuy999]

If you have a valid SBUS signal coming in, you don't have to disable the watchdog. Looks like your steering CH1 is not in center position:

[lolren]

You can close the issue. The problem was, indeed the ESP32 board definition above 1.04. Also the reason that the remote didn`t sync was that I had no idea the receiver must have SBUS output. I was stupidly trying to connect to the PWM output. Thank you for the support. Regards

[fiechr]

I assume, that I have the same issue (using PlatformIO)

The platform parameter in the platformio.ini is set to "platform = espressif32@3.0.0"

Some LEDs are blinking and the speaker makes a popping noise every few seconds. The serial monitor repeats the same message about S-BUS initialization endlessly every few seconds.

This is my first board, so in addition I also don't know what it is supposed to do.

I've tried multiple receivers, PCBs and ESP32 dev boards. I also tried inverted/non-inverted.

But it seems to have nothing to do with that.

[lolren]

It's the receiver. You need a special ibus or sbus receiver. That solved my problem. Regards

[fiechr]

I've tested a Flysky FGr4v2 (with NB4 radio), an A8S and a iA6B (with I6 radio), as well as a Radiolink R7FG.

All receivers were set to SBUS mode in the RX settings.

[lolren]

But, did you connect the esp to the SBUS output, not a PWM output?

[fiechr]

I'm pretty sure, yes. Some have dedicated SBUS output pins, others use ports like "SERVO" or "IBUS".

Is there any way to get more information on why it fails exactly? Is it possible to configure the radio or its configuration wrong, so it reproduces this kind of issue? I will check out the debug settings on the *.ino file.

I've tried different radios with my own settings and also the I6 with the stock I6X profile, but still, no SBUS initialization.

[fiechr]

After trying different setups and hardware, I finally tried set sbusInverted to "true" again and now it works... Maybe a combination of different settings.

The FrSky FGr4 and iA6B seem to use inverted SBUS signals.