I am trying to capture serial data sent from Nextion to Arduino.
I have a text field setup keyed to an alpha-num pad limited to 4 digits, and I would like that 4-digit alpha-num upon pressing ok on the pad, to be transmitted to the Arduino, then decoded by the Arduino and saved as a string variable.
This 4-digit number constitutes a serial number the user needs to enter.
Stuffed if I can get off the launchpad with this one. Sending and receiving single commands is no problem, but receiving a whole string is kicking my butt.