User Manual

XBee® Wi-Fi RF Modules

6. Advanced Application Features

XBee Analog and Digital I/O Lines

XBee Wi-Fi firmware supports a number of analog and digital I/O pins that are

configured through software commands. Analog and digital I/O lines can be set or

queried. The following table lists the configurable I/O pins and the corresponding

configuration commands.

Pin name(s) Module pin AT cmd Command Range

DIO12/SPI_MISO 4 P2 0,1,3-5

DIO10/PWM0 6 P0 0,2-5

DIO11/PWM1

0,2-5

DIO8/nDTR/SLEEP_RQ 9 D8 0,1,3-5

DIO4/SPI_MOSI 11 D4 0-5

DIO7/nCTS 12 D7 0,1,3-7

DIO9/ON_nSLEEP

0,1,3-5

DIO5/ASSOCIATE 15 D5 0,1,3-5

DIO6/nRTS 16 D6 0,1,3-5

DIO3/AD3/SPI_nSSEL 17 D3 0-5

DIO2/AD2/SPI_CLK

0-5

DIO1/AD1/SPI_nATTN 19 D1 0-5

DIO0/AD0 20 D0 0,2-5

I/O Configuration

To enable an analog or digital I/O function on one or more XBee module pin(s), the

appropriate configuration command must be issued with the correct parameter. After

issuing the configuration command, changes must be applied on the module for the I/O

settings to take effect. Pull-up/down resistors can be set for each digital input line using

the PR command. The PR value updates the state of all pull-up/down resistors, and the

PD command determines if a pull-up or pull-down is used. See Chapter 8 for information

on these commands

Pin Command Parameter Description

Disabled

Peripheral control

Analog input or PWM output

Data in monitored

Data out default low

Data out default High

RS485 enable low

RS485 enable high

Unsupported