My question is quite simple: can you, somehow, upload Arduino code without closing puTTY's serial console? I hate having to close the program to open it again for reading the incoming information.
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1use Serial Monitor in IDE or a second USB to TTL Serial adapter for output to putty– Juraj ♦Commented Jan 4, 2021 at 15:34
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2 Answers
You can't. Putty has no way of disconnecting without closing the program (as far as I can tell).
You could try "Tera Term" which apparently (though I don't use Windows so have no experience with it) has a disconnect option (which you would have to use before uploading).
Alternatively, as @Juraj has mentioned, you could use a separate USB to TTL UART adaptor to provide a second debug serial port (either with SoftwareSerial or mirroring the TX pin of the Arduino directly - don't connect RX in this case) which doesn't interfere with software upload.
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`softwareSerial' works well if you've got a spare digital pin or two. I've been using it to send the status information I need to a Raspberry Pi, via a level converter, while the proper USB serial port is used for uploading from a desktop PC, as well as getting a copy of the status info.– Chris HCommented Jan 5, 2021 at 12:37
There is an open source project that will do what you want.
http://com0com.sourceforge.net/
The com0com will create virtual com ports for the programs to connect to.
The hub4com will allow you to route data between the physical port and multiple virtual com ports.
