I/O support
API frame support
Digi XBee® 3 802.15.4 RF Module User Guide
95
Bytes Name
Description
2
Digital
channel
mask
Indicates which
have sampling enabled. Each bit corresponds to
one digital I/O line on the device.
bit 0 = DIO0
bit 1 = DIO1
bit 2 = DIO2
bit 3 = DIO3
bit 4 = DIO4
bit 5 = DIO5
bit 6 = DIO6
bit 7 = DIO7
bit 8 = DIO8
bit 9 = DIO9
bit 10 = DIO10
bit 11 = DIO11
bit 12 = DIO12
bit 13 = DIO13
bit 14 = DIO14
bit 15 = N/A
Example: a digital channel mask of 0x002F means DIO0, 1, 2, 3 and 5 are
configured as digital inputs or outputs.
1
Analog
channel
mask
Indicates which lines have
enabled for sampling. Each bit in the
analog channel mask corresponds to one analog input channel. If a bit is set,
then a corresponding 2-byte analog data set is included.
bit 0 = AD0/DIO0
bit 1 = AD1/DIO1
bit 2 = AD2/DIO2
bit 3 = AD3/DIO3
2
Digital
data set
Each bit in the digital data set corresponds to a bit in the digital channel mask
and indicates the digital state of the pin, whether high (1) or low (0).
If the digital channel mask is 0x0000, then these two bytes are omitted as no
are enabled.
2
Analog
data set
(multiple)
Each enabled
in the analog channel mask will have a separate 2-byte
value based on the number of ADC inputs on the originating device. The data
starts with AD0 and continues sequentially for each enabled analog input
channel up to AD3.
If the analog channel mask is 0x00, then no analog sample bytes is included.
API frame support
I/O samples generated using
(
IR
) and
(
IC
) are
transmitted to the destination address specified by
DH
and
DL
. In order to display the sample data,
the receiver must be operating in API mode (
AP
=
1
or
2
). The sample data is represented as an I/O
sample API frame.
There are three types of I/O sample frames that are supported by the XBee 3 802.15.4 RF Module:
n
0x92 - Enhanced I/O sample frame
n
0x82 - Legacy 64-bit I/O sample frame
n
0x83 - Legacy 16-bit I/O sample frame
