AT commands
I/O line passing commands
Set or read the I/O sample rate to enable periodic sampling. When set, this parameter causes the
device to sample all enabled DIO and ADC at a specified interval.
To enable periodic sampling, set IR to a non-zero value, and enable the analog or digital I/O
functionality of at least one device pin (see D0 (DIO0/AD0) -D8 (DIO8/SLEEP_REQUEST), P0
(RSSI/PWM0 Configuration) -P2 (SPI_MISO).
WARNING! If you set IR to 1 or 2, the device will not keep up and many samples will be
lost.
Parameter range
0 - 0xFFFF (x 1 ms)
Default
0
RP (RSSI PWM Timer)
This command applies to the XBee/XBee-PRO S2C 802.15.4 RF Module.
The PWM timer expiration in 0.1 seconds. RP sets the duration of pulse width modulation (PWM)
signal output on the RSSI pin. The signal duty cycle updates with each received packet and shuts off
when the timer expires.
When RP = 0xFF, the output is always on.
Parameter range
0 - 0xFF (x 100 ms)
Default
0x28 (four seconds)
I/O line passing commands
The following AT commands are I/O line passing commands.
I/O Line Passing allows the digital and analog inputs of a remote device to affect the corresponding
outputs of the local device.
You can perform Digital Line Passing on any of the Digital I/O lines. Digital Inputs directly map to
Digital Outputs of each digital pin.
Analog Line Passing can be performed only on the first two ADC lines:
n
ADC0 corresponds with PWM0
n
ADC1 corresponds with PWM1
IA (I/O Input Address)
This command applies to the XBee/XBee-PRO S2C 802.15.4 RF Module.
The source address of the device to which outputs are bound. Setting all bytes to 0xFF disables I/O
line passing. Setting IA to 0xFFFF allows any I/O packet addressed to this device (including
broadcasts) to change the outputs.
XBee/XBee-PRO S2C 802.15.4 RF Module User Guide
101
ETC [ ETC ]
