Embedded TCP/IP stack: fnet_serial_stream::id

The id parameter provides a way for a stream driver to identify a particular device.
For example it can be used as serial port number or pointer to a stream private structure.
This parameter is passed to fnet_serial_stream.putchar() and to fnet_serial_stream.getchar() as the first parameter.

Definition at line 103 of file fnet_serial.h.