LISA-U series - System Integration Manual
UBX-13001118 - R17
Advance information
System description
Page 110 of 190
LISA-U1 series and LISA-U200-00S modules versions do not support SPI / IPC serial interface over GPIOs:
the SPI / IPC pins provide the SPI / IPC function only and cannot be configured as GPIO.
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: it is possible to
simultaneously set the same mode on another pin (also on all the GPIOs).
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.
The pin can be connected on the application board to an output pin of an application processor to sense the
digital signal level.
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: it is possible to
simultaneously set the same mode on another pin (also on all the GPIOs).
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
The pin can be connected on the application board to an input pin of an application processor to provide a
digital signal.
Pad 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 “Pad 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 “Pad disabled” function is set as
o
Tri-state with an internal active pull-down enabled
Table 48 describes the configurations of all the GPIO pins of LISA-U modules.
Pin
Module
Name
Description
Remarks
20
LISA-U1 series
GPIO1
GPIO
By default, the pin is configured as Pad disabled.
Can be alternatively configured by the AT+UGPIOC command as
Output
Input
Network Status Indication
GNSS Supply Enable
GSM Tx Burst Indication
LISA-U200-00S
GPIO1
GPIO
By default, the pin is configured as Pad disabled.
Can be alternatively configured by the AT+UGPIOC command as
Output
Input
Network Status Indication
GSM Tx Burst Indication
