RM024 User Manual
Version 2.3
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www.lairdtech.com/wireless
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CONN-GUIDE-RAMP24-0413
C
ONFIGURING THE
RM024
The RM024 can be configured using AT Configuration Commands. These commands can be issued only in
Command mode. Command mode can be entered by setting the CMD/Data pin of a transceiver low or by
issuing the Enter AT Command.
AT Commands
There are four types of configuration supported by the RM024:
On-the-Fly commands for dynamic reprogramming of running memory
EEPROM commands for making persistent changes to EEPROM
Utility commands for dealing with Command mode
Status commands for querying the radio for information.
When in Command mode, the RF is still active and incoming RF packets are queued in the radio until
Command mode is exited. If in Command mode via the CMD/Data pin and Command/Data RX Disable has
been disabled, incoming RF packets are not queued and are not sent to the host immediately.
AT Commands sent to the RM024 must still adhere to the interface guidelines specified by the Interface
Timeout and RF Packet Size. For this reason, standard terminal emulators, such as HyperTerminal, cannot be
used to configure the RM024. Manually typing AT Commands causes the Interface Timeout to be reached
between characters and the command is discarded if already in Command Mode or transmitted if not. AT
commands should be issued either with the Laird Technologies OEM Configuration Utility or sent directly
from a microcontroller or other host. When an invalid command is sent, the radio discards the data and no
response is sent to the OEM Host.
Table 11
below shows a quick summary of the basic configuration and
diagnostic commands available on the RM024. For detailed command information, please refer to the
Command Descriptions
immediately following the Quick Reference Table.
On-the-Fly Control Commands
The RM024 transceiver contains memory that holds many of the parameters that control the transceiver
operation. Using the On-the-Fly command set allows many of these parameters to be viewed and changed
during system operation. Because the memory these commands affect is dynamic, when the transceiver is
reset, these parameters revert back to the settings stored in the EEPROM.
EEPROM Configuration Commands
Two commands are available to read and write the EEPROM of the radio. These commands are powerful as
they can control the entire configuration of the radio. They should be used with caution as overwriting
reserved areas of memory can adversely affect the operation of the radio. The radio must be reset for any
changes to the EEPROM to take effect.
Utility Commands
Utility commands are used to enter and exit AT Command mode and to reset the radio.
Status Commands
Status commands are used to query the radio for information. Status commands can be used to poll GPIOs,
ADCs, or to retrieve information about the state of the network. Status commands do not affect the
operation of the transceiver aside from being in Command mode.
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