Command descriptions for the XBee/XBee-PRO RF Module
XBee / XBee-PRO RF Modules 802.15.4 Product Manual 74
IR (Sample Rate) command
<I/O Settings> The IR command is used to set/read the sample rate. When set, the module will
sample all enabled DIO/ADC lines at a specified interval. This command allows periodic reads of the
ADC and DIO lines in a non-Sleep Mode setup. A sample rate which requires transmissions at a rate
greater than once every 20ms is not recommended.
Example: When IR = 0x14, the sample rate is 20 ms (or 50 Hz).
IS (Force Sample) command
<I/O Settings> The IS command is used to force a read of all enabled DIO/ADC lines. The data is
returned through the UART.
When operating in Transparent Mode (AP=0), the data is retuned in the following format:
All bytes are converted to ASCII:
number of samples<CR>
channel mask<CR>
DIO data<CR> (If DIO lines are enabled<CR>
ADC channel Data<cr> <-This will repeat for every enabled ADC channel<CR>
<CR> (end of data noted by extra <CR>)
When operating in API mode (AP > 0), the command will immediately return an ‘OK’ response. The
data will follow in the normal API format for DIO data.
IT (Samples before TX) command
<I/O Settings> The IT command is used to set/read the number of DIO and ADC samples to collect
before transmitting data.
One ADC sample is considered complete when all enabled ADC channels have been read. The
module can buffer up to 88 bytes of sample data. Since the module uses a 10-bit A/D converter, each
sample uses two bytes. This leads to a maximum buffer size of 44 samples or IT=0x2C.
AT Command: ATIR
Parameter Range: 0 - 0xFFFF [x 1 msec]
(cannot guarantee 1 ms timing when IT=1)
Default Parameter Value:0
Related Command: IT (Samples before TX)
Minimum Firmware Version Required: v1.xA0
AT Command: ATIS
Minimum Firmware Version Required: v1.xA0
AT Command: ATIT
Parameter Range: 1 - 0xFF
Default Parameter Value:1
Minimum Firmware Version Required: v1.xA0
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