Catch Serial data via interrupt - nodemcu

hariharraghu:
Can you please advise on the multiplexer usage with out blocking the code, if i use millis to control the output, i am not able to get the correct output.

output 1 and 2 should be independent in function, but since both of the running parallel, its triggering the output 3

Sorry, I don't understand at all.

What is "multiplexer usage" - what has it got to do with the order of sending values?

What is meant by "output 1 and 2 should be independent in function" - what have they got to do with the order of sending the values?

...R