SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R26
System description
Page 79 of 217
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
Pin disabled
:
All the GPIOs can be configured in tri-state with an internal active pull-down enabled, as a not used pin,
setting the parameter <gpio_mode> of +UGPIOC AT command to 255.
The “Pin disabled” mode can be provided on more than one pin per time: it is possible to simultaneously set
the same mode on another pin (also on all the GPIOs).
The pin configured to provide the “Pin disabled” function is set as:
o
Tri-state with an internal active pull-down enabled
Table 15 describes the configurations of all SARA-G340, SARA-G350 and SARA-U2 modules’ GPIO pins.
Pin
Module
Name
Description
Remarks
16
SARA-G340
SARA-G350
GPIO1
GPIO
By default, the pin is configured as Pin disabled.
Can be alternatively configured by the AT+UGPIOC command as
Input / Output
Network Status Indication
GNSS Supply Enable
GSM Tx Burst Indication
Jamming indication
34
SARA-U201
SARA-U260
SARA-U270
GPIO1
GPIO
By default, the pin is configured as Pin disabled.
Can be alternatively configured by the AT+UGPIOC command as
Input / Output
Network Status Indication
GNSS Supply Enable
GSM Tx Burst Indication
Module Status Indication
SARA-U280
GPIO1
GPIO
By default, the pin is configured as Pin disabled.
Can be alternatively configured by the AT+UGPIOC command as
Input / Output
Network Status Indication
GNSS Supply Enable
Module Status Indication
34
Not supported by product versions “00” and “01”.
