Lantronix XPort User Guide

XPort® Device Server User Guide 80
Examples
Example 1: PC sends command 10h to find out which configurable pins are available
as GPIO.
PC -> XPort: 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
XPort -> PC: 10h, 03h, 00h, 00h, 00h
Command details:
10h = command 10h
00h, 00h, 00h, 00h = ignored
00h, 00h, 00h, 00h = ignored
Response details:
10h = response to command 10h
03h, 00h, 00h, 00h =
bits 0 and 1 are 1 →CP1 and CP2 are configured as GPIOs.
bit 2 is 0 → CP3 is configured as either serial control or diagnostics.
The other bits are ignored because there are only three configurable pins on
the XPort module.
Example 2: PC sends command 1Bh to change the current states of GPIO 0 and 1.
PC -> XPort: 1Bh, 01h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
XPort -> PC: 1Bh, 05h, 00h, 00h, 00h
Command details:
1Bh = command 1Bh
01h, 00h, 00h, 00h = the mask that determines which GPIOs will be changed.
bit 0 is 1 → GPIO0 will be changed.
bit 1 is 0 → GPIO1 will remain the same.
00h, 00h, 00h, 00h = the new states
bit 0 is 0 → GPIO0 will become 0.
bit 1 is ignored since it is masked out.
Response details:
1Bh = response to command 1Bh
05h, 00h, 00h, 00h =
bit 0 is 1 → GPIO0 = 1
bit 1 is 0 → GPIO1 = 0
bit 2 is 1 → GPIO2 = 1
The other bits are ignored because there are only three configurable pins on
the XPort module.

Lantronix XPort Specifications

General

Data Link Protocol	Ethernet, Fast Ethernet
Connectivity Technology	Wired
Form Factor	Embedded
Category	Embedded Systems
Interface	Serial
Serial Ports	1
Operating Temperature	0°C to 70°C