Railroader:
Hi!I wonder if Serial.print/println could be arranged in a way that interrupts from the UNO-UART would make the UNO load the next character to be transmitted. This would make the UNO able to do its work without the "long" delay caused by waiting for the entire message to be transmitted.
Of course, increasing the Baudrate would cut down the "downtime" for sending. However, 9600 is the default and nice to use when switching between different projects.
Doing a lot of real time programming using the Z80 I practised this but I don't know enough about the UNO, how it performs serial I/O.
Regards,
Railroader
What leads you to think it does not work using interrupts?
Paul