Table of Contents
Advertisement
WR (Write) command
<(Special)> The WR command is used to write configurable parameters to non-volatile memory (Values remain in the
module's memory until overwritten by another use of WR Command).
If changes are made without writing them to non-volatile memory, the module will revert back to previously saved
parameters the next time the module is powered-on.
If the non-volatile user configuration is not correct, WR will re-attempt (up to 3x). If all three attempts fail, the
command will return an ERROR alert.
AT Command: ATWR
Binary Command: 0x08
WS (Sticky Warning Numbers) command
<Diagnostics> The WS command reports warning numbers of all warnings active since the last use of the WS or WN
command (including any warnings which are currently active). This command also resets all non-zero warning
counts, except for warnings that are presently active, which are set to 1.
AT Command: ATWS
Parameter Range (read-only): 1 - 8
Number of bytes returned: 1
API operation
By default, XTend RF Modules act as a serial line replacement (Transparent Operation) - all UART data received
through the DI pin is queued up for RF transmission. When the module receives an RF packet, the data is sent out the
DO pin with no additional information.
Inherent to Transparent Operation are the following behaviors:
•
If module parameter registers are to be set or queried, a special operation is required for transitioning the module
into Command Mode; see
•
In point-to-multipoint systems, the application must send extra information so that the receiving module(s) can
distinguish between data coming from different remotes.
As an alternative to the default Transparent Operation, API (Application Programming Interface) Operations are
available. API operation requires that communication with the module be done through a structured interface (data
is communicated in frames in a defined order). The API specifies how commands, command responses and module
status messages are sent and received from the module using a UART Data Frame.
API frame specifications
Two API modes are supported and both can be enabled using the AP (API Enable) command. Use the following AP
parameter values to configure the module to operate in a particular mode:
•
AP = 0 (default): Transparent Operation (UART Serial line replacement)
API modes are disabled.
•
AP = 1: API Operation
•
AP = 2: API Operation (with escaped characters)
XTend RF Module User Guide
Command mode
on page 29.
API operation
57
Advertisement
Table of Contents
