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Serial0 problems

Posted: Mon May 25, 2015 1:53 am
by pihlerm

I have Crius AIO v1 (Hobby King clone).
Multiwii 2.4 (though this problem occured with other versions).

When connecting via USB (WinGUI, ..) most of the time I cannot connect. I must manually reset the FC while WinGUI is attempting to connect to it.
It works imediately after uploading new formware via arduino. If I disconnect/recconect, I get the problem.
This happens with and without main battery connected.

Using COM scanner I saw that WinGUI is sending 24 4D 3C 00 64 64 ($M<.dd) and getting no replies.
I wonder where the problem might be?
I have telemetry frsky on serial1 and GPS on serial3 and they work just fine while the problem with serial0 is occurring.

How is Serial0 initialized? When and where?

I really have to solve this now since i'm connecting a wifi bridge via ESP8266 and cannot reset the copter mid-flight;)

Thank you.

Re: Serial0 problems

Posted: Mon May 25, 2015 1:25 pm
by FengShuiDrone

Re: Serial0 problems

Posted: Mon May 25, 2015 4:15 pm
by pihlerm
Well, no.
I have moved my wifi bridge to serial2 and it works a little better now.
Will see when I go to the field ..

But problems with serial 0 persist. I have problems with USB or with wifi on port0.
Somehow the protocol goes out of sync and/or serial0 becomes unresponsive.

If somebody has a similar experience, please drop a line :)