SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R26
System description
Page 78 of 217
Last gasp
:
Only the
GPIO3
pin can be configured to provide the “Last gasp” function, to trigger the delivery of a last
alarm notification to a remote entity in the case of a power supply outage (configured by means of
AT+ULGASP command), setting the parameter <gpio_mode> of AT+UGPIOC command to 19.
The pin configured to provide the “Last gasp” function is set as
o
Input, to trigger the last gasp procedure upon detection of a falling edge or a rising edge
SARA-G3 series, and SARA-U2 modules ‘00’, ‘x3’ product versions do not support “Last gasp” function.
Module status indication
:
The
GPIO1
pin of SARA-U2 modules can be configured to indicate module status (power-off mode, i.e.
module switched off, versus idle, active or connected mode, i.e. module switched on), by properly setting
the parameter <gpio_mode> of AT+UGPIOC command to 10.
No GPIO pin is by default configured to provide the “Module status indication”.
The pin configured to provide the “Module status indication” function is set as:
o
High, when the module is switched on (any operating mode during module normal operation)
o
Low, when the module is switched off (power off mode)
SARA-G3 modules do not support “Module status indication” function.
Module operating mode indication
:
The
SIM_DET
pin of SARA-U2 modules can be configured to indicate module operating mode status (the
low power idle mode versus active or connected mode), by properly setting the parameter <gpio_mode> of
AT+UGPIOC command to 11.
No GPIO pin is by default configured to provide the “Module operating mode indication”.
The pin configured to provide the “Module operating mode indication” function is set as:
o
Output / High, when the module is in active or connected mode
o
Output / Low, when the module is in idle mode (that can be reached if power saving is enabled by
+UPSV AT command: for further details, see the
u-blox AT Commands Manual
SARA-G3 modules do not support “Module operating mode indication”.
I
2
S digital audio interface
:
The
I2S_RXD
,
I2S_TXD
,
I2S_CLK
,
I2S_WA
pins of SARA-U2 modules are by default configured as the I
2
S
digital audio interface.
Only these pins of SARA-U2 modules can be configured as the I
2
S digital audio interface, by correctly setting
the parameter <gpio_mode> of AT+UGPIOC command to 12 (default setting).
SARA-G3 modules do not support the I
2
S digital audio interface over GPIOs.
Jamming condition indication
:
The
GPIO1
, or the
GPIO2
,
GPIO3
,
GPIO4
pins of SARA-G3 modules product versions “02” onwards,
alternatively from their default settings, can be configured to indicate a jamming condition by setting the
parameter <gpio_mode> of AT+UGPIOC command to 6.
No GPIO pin is by default configured to provide the “Jamming condition
indication” function.
If the +UCD AT command is opportunely configured to report the jamming detection, the corresponding pin
configured to provide the “Jamming condition
indication” function is set as:
o
Output / High, when Jamming condition
is on
o
Output / Low, when Jamming condition
is off
SARA-U2 modules do not support the Jamming indication over GPIOs.
SARA-G3 modules product versions “00” and “01” do not support the Jamming indication over GPIOs.
