Datasheet

Jon Waddington
36
Analogue
Channel Mask
Digital Samples
Analogue
Samples
Checksum
The analogue channel mask indicates which analogue inputs
were sampled.
This contains the digital samples, if any.
This contains the analogue samples, if any.
The checksum is calculated by summing all the bytes after the length bytes,
then keeping just the lowest byte.
The digital channel mask indicates which digital input pins were
sampled.
Digital Channel
Mask
The number of samples indicates the amount of samples included in
the packet.
Number of
Samples
The receive options indicate whether the packet was acknowledged or
a broadcast packet.
Receive Options
The 16 bit network address is the shared address of the XBEE
modules.
The 64 bit address is the ATSH and ATSL values of the XBEE module
where the packet is being sent from.
64 Bit Address
API Identifier
The API identifier indicates the type of packet being sent. 0x92
indicates digital or analogue samples.
The length is the number of bits to follow, not including the checksum.
16 Bit Network
Address
Length (MSB)
Length (LSB)
Start Delimiter
The start delimiter has a value of 0x7E. This begins the API packet.
Figure 3.6.1.3. A Diagram Showing a Typical API Packet