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by u063096
Mon May 01, 2017 7:55 pm
Forum: CELLv1.0
Topic: UART stutters on startup
Replies: 47
Views: 4168

Re: UART stutters on startup

Got a message back from ZTE below - "The AT+COPN output has<=20 group data" Apparently yours has a bug of some sort. Is it consistent? Yes, it is. It is a sorted list of network providers worldwide, every line structured nicely like the ZTE specs describe it. Would you like to get a copy?...
by u063096
Sun Apr 30, 2017 8:14 pm
Forum: CELLv1.0
Topic: UART stutters on startup
Replies: 47
Views: 4168

Re: UART stutters on startup

So, it seems to me that setting up the server test would be most beneficial to you and an apples to apples comparison. The networking stack is much different than their internals. I'll ask the question though, but don't expect their internal debug to be equivalent to a network test... two completel...
by u063096
Sun Apr 30, 2017 8:10 pm
Forum: CELLv1.0
Topic: UART stutters on startup
Replies: 47
Views: 4168

Re: UART stutters on startup

Wait, how do you have so many networks on your COPN command? Does that seem legitimate? Is there really that many cell towers there for your network... crazy, I guess it's possible. "The AT+COPN output has >1400 lines on Putty" No, that is not the list of currently available providers, bu...
by u063096
Sat Apr 29, 2017 1:11 am
Forum: CELLv1.0
Topic: UART stutters on startup
Replies: 47
Views: 4168

Re: UART stutters on startup

You may be right. There remains a nagging doubt nevertheless...

I will try to check the Arduino UART handling anyway and decide on the results what to do.

If you happen to talk to the ZTE guys, I would appreciate if you could mention my issues. Perhaps they have a golden hint ;)
by u063096
Fri Apr 28, 2017 9:27 pm
Forum: CELLv1.0
Topic: UART stutters on startup
Replies: 47
Views: 4168

Re: UART stutters on startup

All said right, but why am I losing that much data at 115200 baud as well without ever touching the baud rate? 115200 is in fact not working properly, or so it seems. To sort out any programming or Arduino based issues I will rig up a test where I will send data from the PC to that very UART the Cel...
by u063096
Thu Mar 30, 2017 10:04 pm
Forum: CELLv1.0
Topic: UART stutters on startup
Replies: 47
Views: 4168

Re: UART stutters on startup

What time to wait for the connection would you suggest then? I currently have a loop iterating through the baud rates and sending AT only, then wait for the OK, but that seemingly works only once in a while. I could not find a pattern yet as when the communication will establish or not.

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