XBee‐PRO®900HP/XBee‐PRO®XSCRFModules
©2014DigiInternationalInc. 55
I/O Sampling
Sleep
SleepCommands
Table5‐010. I/OSamplingCommands
AT
Command
Name and Description Parameter Range Default
AV
Analog Voltage Reference. The analog voltage reference that is used for A/D sampling.
0 = 1.25 V reference
1 = 2.5 V reference
0, 1 0
IC
DIO Change Detection. The digital I/O pins to monitor for changes in the I/O state. IC
works with the individual pin configuration commands (D0-D9, P0-P2). If a pin is enabled
as a digital input/output, the IC command can be used to force an immediate I/O sample
transmission when the DIO state changes. IC is a bitmask that can be used to enable or
disable edge detection on individual channels. Unused bits should be set to 0.
Bit (I/O pin):
0 (DIO0)
1 (DIO1)
2 (DIO2)
3 (DIO3)
4 (DIO4)
5 (DIO5)
6 (DIO6)
7 (DIO7)
8 (DIO8)
9 (DIO9)
10 (DIO10)
11 (DIO11)
12 (DIO12)
0-0xFFFF 0
IF
Sleep Sample Rate.The number of sleep cycles that must elapse between periodic I/O
samples. This allows I/O samples to be taken only during some wake cycles. During
those cycles I/O samples are taken at the rate specified by IR.
1-0xFF 1
IR
IO Sample Rate. The I/O sample rate to enable periodic sampling. For periodic sampling
to be enabled, IR must be set to a non-zero value, and at least one module pin must
have analog or digital I/O functionality enabled (see D0-D9, P0-P2 commands). The
sample rate is measured in milliseconds.
0 - 0xFFFF (ms) 0
IS Force Sample. Forces a read of all enabled digital and analog input lines. n/a n/a
TP
Temperature. The current module temperature in degrees celsius in 8-bit two’s
compliment format.For example 0x1A = 26C, and 0xF6 = -10C
0x00 to 0xFF n/a
%V Supply Voltage. The supply voltage of the module in millivolts. -- --
AT
Command
Name and Description Parameter Range Default
SM
Sleep Mode. The sleep mode of the module.
0 - Normal
1 - Pin sleep. In this mode, the sleep/wake state of the module is controlled by the
SLEEP_REQUEST line.
4 - Asynchronous cyclic sleep. In this mode, the module periodically sleeps and
wakes based on the SP and ST commands.
5 - Asynchronous cyclic sleep with pin wake-up. In this mode, the module acts in
the same way as asynchronous cyclic sleep when SLEEP_RQ is asserted.
When SLEEP_RQ is not asserted the module remains awake..
7 - Sleep support mode.
8 - Synchronous cyclic sleep mode.
0, 1, 4, 5, 7, 8 0
SO
Sleep Options. The sleep options of the module. This command is a bitmask.
For synchronous sleep modules, the following sleep options are defined:
bit 0 = Preferred sleep coordinator
bit 1 = Non-sleep coordinator
bit 2 = Enable API sleep status messages
bit 3 = Disable early wake-up
bit 4 = Enable node type equality
bit 5 = Disable lone coordinator sync repeat
For ansynchronous sleep modules, the following sleep options are defined:
bit 8 = Always wake for ST time
Any of the available sleep
option bits can be set or
cleared. Bit 0 and bit 1
cannot be set at the same
time.
0x02
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