Ublox SARA-G3, System Integration Manual

Page: 42 / 188

SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R08 Objective Specification System description
Page 42 of 188
The module firmware can be updated over the UART interface by means of:

the Firmware upgrade Over AT (FOAT) feature, on all the SARA-G3 and SARA-U2 series modules

the u-blox EasyFlash tool, on SARA-U2 series modules only
For more details on FW upgrade procedures see section 1.13 and Firmware update application note [25].
1.9.1.2 UART AT interface configuration
The UART interface of SARA-G3 and SARA-U2 series modules is available as AT command interface with the
default configuration described in Table 11 (for more details and information about further settings, see the
u-blox AT Commands Manual [3]).
Interface AT Settings Comments
UART interface AT interface: enabled AT command interface is enabled by default on the UART physical interface
AT+IPR=0 Automatic baud rate detection enabled by default on SARA-G3 series
One-shot automatic baud rate detection enabled by default on SARA-U2 series
AT+ICF=0 Automatic frame format recognition enabled by default on SARA-G3 series
One-shot automatic frame format recognition enabled by default on SARA-U2 series
AT&K3 HW flow control enabled by default
AT&S1 DSR line set ON in data mode 9 and set OFF in command mode 9
AT&D1 Upon an ON-to-OFF transition of DTR, the DCE enters online command mode 9 and issues
an OK result code
AT&C1 Circuit 109 changes in accordance with the Carrier detect status; ON if the Carrier is
detected, OFF otherwise
MUX protocol: disabled Multiplexing mode is disabled by default and it can be enabled by AT+CMUX command.
The following virtual channels are defined:

Channel 0: control channel

Channel 1: AT and Data

Channel 2: AT and Data

Channel 3: AT and Data (not available on SARA-G300 / SARA-G310 modules)

Channel 4: AT and Data (not available on SARA-G300 / SARA-G310 modules)

Channel 5: AT and Data (not available on SARA-G300 / SARA-G310 modules)

Channel 6: GNSS tunneling (not available on SARA-G300 / SARA-G310 modules)

Channel 7: SIM Access Profile (not available on SARA-G3 series modules)
Table 11: Default UART AT interface configuration
9 Refer to the u-blox AT Commands Manual [3] for the definition of the interface data mode, command mode and online command mode.