SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R08
Objective Specification
System description
Page 66 of 188
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 series 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
u-blox AT Commands Manual
SARA-G3 series 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 series do not support the I
2
S digital audio interface over GPIOs.
General purpose input
:
All the GPIOs can be configured as input to sense high or low digital level through AT+UGPIOR command,
setting the parameter <gpio_mode> of AT+UGPIOC command to 1.
The “General purpose input” mode can be provided on more than one pin at a time.
No GPIO pin is by default configured as “General purpose input”.
The pin configured to provide the “General purpose input” function is set as
o
Input, to sense high or low digital level by AT+UGPIOR command.
General purpose output
:
All the GPIOs can be configured as output to set the high or the low digital level through AT+UGPIOW
command, setting the parameter <gpio_mode> of +UGPIOC AT command to 0.
The “General purpose output” mode can be provided on more than one pin per time.
No GPIO pin is by default configured as “General purpose output”.
The pin configured to provide the “General purpose output” function is set as
o
Output / Low, if the parameter <gpio_out_val> of AT+UGPIOW command is set to 0
o
Output / High, if the parameter <gpio_out_val> of AT+UGPIOW command is set to 1
