Hi,

what is not clear to me is:
can this code be used to have a full hardware-transparent serial--to---serial-interface.

Imagine an Arduino Uno which is connected to an extra-USB-to-TTL-converter on Arduino-no-Pins 0 and 1

Arduino-Uno-0-Rx--------Tx-of-USB-to-TTL---------------USB-port of computer
Arduino-Uno-1-Tx--------Rx-of-USB-to-TTL---------------USB-port of computer

Now instead of using a wire a pair of wireless serial shall be used
Arduino-Uno-0-Rx-------wireless-serial.............over.....the.........air.....wireless-serial-Tx--------computer
Arduino-Uno-0-Tx-------wireless-serial.............over.....the.........air.....wireless-serial-Rx--------computer

Can this code be used in this hardware-configuration as a pure hardware-replacement of a cable?

best regards Stefan