Advanced application features I/O line monitoring
XBee® SX 868 RF Module User Guide
71
Field Name Description
bit 0 = AD0/DIO0
bit 1 = AD1/DIO1
bit 2 = AD2/DIO2
bit 3 = AD3/DIO3
bit 4 = DIO4
bit 5 = ASSOC/DIO5
bit 6 = RTS/DIO6
bit 7 = CTS/GPIO7
bit 8 = DTR / SLEEP_RQ / DIO8
bit 9 = ON_SLEEP / DIO9
bit 10 = RSSI/DIO10
bit 11 = PWM/DIO11
bit 12 = CD/DIO12
For example, a digital channel mask of 0x002F means DIO0,1,2,3, and 5 are
enabled as digital I/O.
1 Analog
channel
mask
Indicates which lines have analog inputs enabled for sampling. Each bit in
the analog channel mask corresponds to one analog input channel.
bit 0 = AD0/DIO0
bit 1 = AD1/DIO1
bit 2 = AD2/DIO2
bit 3 = AD3/DIO3
bit 4 = AD4/DIO4
bit 5 = ASSOC/AD5/DIO5
Variable Sampled
data set
If you enable any digital I/O lines, the first two bytes of the data set indicate
the state of all enabled digital I/O.
Only digital channels that you enable in the Digital channel mask bytes
have any meaning in the sample set. If do not enable any digital I/O on the
device, it omits these two bytes.
Following the digital I/O data (if there is any), each enabled analog channel
returns two bytes. The data starts with AIN0 and continues sequentially for
each enabled analog input channel up to AIN5.
If you issue the IS command using a a local or remote AT Command API frame, then the device returns
an AT Command Response (0x88) frame with the I/O data included in the command data portion of
the packet.
Example Sample AT response
0x01 [1 sample set]
0x0C0C [Digital Inputs: DIO 2, 3, 10, 11 enabled]
0x03 [Analog Inputs: A/D 0, 1 enabled]
0x0408 [Digital input states: DIO 3, 10 high, DIO 2, 11 low]
0x03D0 [Analog input: ADIO 0 = 0x3D0]
0x0124 [Analog input: ADIO 1 =0x120]
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