On Wed, Dec 18, 2019 at 3:02 PM G8JCF <g8jcfsdr@...> wrote:
Hi
Welcome to the group :-)
My Arduino UNO also uses a CH340 USB to TTL Serial chip - typical of cheap chinese clones - and I have never had a problem. Since your UNO works correctly with the Arduino IDE it should work fine with the G8JCFSDR.
Also I don't recognise the error message you describe. Could U please run the G8JCFSDR in TRACE mode and email me the logfile to help me understand what is going on ?
In G8JCFSDR, U need to select the Serial I/F tab under config, and then select the correct COM port, set baudrate to 115200, 8 data, 1 stop, no parity.
A really simple way to test the connection is to launch a terminal emulator, eg Tera Term, PUTTY, and connect to the UNO using a serial connection. Typing V<enter> into the terminal emulator should result in a response of 1.2 or 1.3 depending on which build of G8JCFSDR you have installed. If U can't make a connection into your UNO from the terminal emulator, then something very strange is going on, eg incorrect COM port, another program has the COM port opened already.