User's Guide

Operate in API mode Frame descriptions
XBee/XBee-PRO S2C 802.15.4 RF Module User Guide
121
RX Packet: 16-bit address I/O frame - 0x83
Description
When the device receives an I/O sample from a remote device configured to use 16-bit addressing, the
I/O data is sent out the UART using this frame type.
Format
The following table provides the contents of the frame. For details on frame structure, see API frame
specifications.
Frame data
fields Offset
Total
number
of
samples Description
Frame type 3 N/A 0x83
Source
Address
4-5 N/A MSB first, LSB last.
RSSI 6 N/A RSSI: Hexadecimal equivalent of (-dBm) value. For example, if RX
signal strength = -40 dBm, the device returns 0x28 (40 decimal).
Options 7 N/A
bit 0 = reserved
bit 1 = Address broadcast
bit 2 = PAN broadcast
bits 3-7 = [reserved]
Number of
samples
8 N/A Total number of samples.
Channel
Indicator
(see bit field
table
below)
9 MSB
Indicates which inputs have sampling enabled (if any). Each bit
represents either a DIO line or ADC channel.
Bit set to 1 if channel is active.
10 LSB
Digital
Samples (if
enabled)
(see bit field
table
below)
11 MSB If any of the DIO lines are enabled in the Channel indicator, these
two bytes contain samples for all enabled DIO lines. DIO lines that
do not have sampling enabled return 0. If no DIO line is enabled, no
bytes are included in the frame.
12 LSB