Queried Sampling - Digi XBee S2C Zigbee User Manual

Analog and digital I/O lines
Bytes Name
1 Analog Channel Mask
Variable Sampled Data Set
The sampled data set includes 2 bytes of digital I/O data only if one or more I/O lines on the device
are configured as digital I/O. If no pins are configured as digital I/O, these 2 bytes are omitted. Pins are
configured as digital I/O by setting them to a value of 3, 4, or 5.
The digital I/O data is only relevant if the same bit is enabled in the digital I/O mask.
Analog samples are returned as 10-bit values. The device scales the analog reading such that 0x0000
represents 0 V, and 0x3FF = 1.2 V (The analog inputs on the device cannot read more than 1.2 V.). The
device returns analog samples in order starting with AIN0 and finishing with AIN3, and the supply
voltage. Only enabled analog input channels return data.
To convert the A/D reading to mV, do the following:
AD(mV) = (A/D reading * 1200mV) / 1023
The reading in the sample frame represents voltage inputs of 1143.75 and 342.1875 mV for AD0 and
AD1 respectively.

Queried sampling

You can send the IS command to a device locally, or to a remote device using the API remote
command frame (for more information, see
receiving device samples all enable digital I/O and analog input channels and return an I/O sample. If
you send the IS locally, the device sends the I/O sample out the serial port. If the IS command was
received as a remote command, the I/O sample is sent over-the-air to the device that sent the IS
command.
XBee/XBee-PRO® S2C Zigbee® RF Module User Guide
Description
bit 13 = DOUT/DIO13
bit 14 = DIN/DIO14
For example, a digital channel mask of 0x002F means
DIO0,1,2,3, and 5 are enabled as digital I/O.
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 7 = Supply Voltage
A sample set consisting of 1 sample for each enabled ADC
and/or DIO channel, which has voltage inputs of 1143.75 and
342.1875 mV.
If any digital I/O lines are enabled, the first two bytes of the
data set indicate the state of all enabled digital I/O. Only digital
channels that are enabled in the Digital Channel Mask bytes
have any meaning in the sample set. If no digital I/O are
enabled on the device, these 2 bytes will be omitted.
Following the digital I/O data (if any), each enabled analog
channel returns 2 bytes. The data starts with AD0 and
continues sequentially for each enabled analog input channel
up to AD3, and the supply voltage (if enabled) at the end.
API Operation). When you send the IS command, the
I/O sampling
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