How do I use "serXputs(int port, ...) and related macros?

Rabbit Rabbit Software
2

Hello, pls check the Dynamic C function reference manual at the below link, you can find the function description.
http://ftp1.digi.com/support/documentation/90001215_C.pdf

3

You can use the Edit menu’s “Find in Files” function to search for uses of serXputs() in other libraries and the sample programs. One example:

serXputs(SER_PORT_D, "The quick brown fox jumped")