XPLR-IOT-1 - User guide
UBX-21035674 - R03
Platform description
Page 16 of 42
C1-Public
GPIO Signal
Direction Description
P0.28 NORA_BTN2
I
Application button 2
P0.29 DSR6
I
System UART6, DSR flow control
P0.30 CTS6
I
System UART6, CTS flow control
P0.31 TX6
O
System UART6, TX data
P1.00 ALT_INT
I
Sensor interrupt input, ambient light sensor default
P1.01 SARA_INT/NINA_SW1
IO
SARA-R510 interrupt and NINA-W15 SW1 function
P1.02 SENSE_I2C_SCL
O
Sensor I2C bus clock
P1.03 SENSE_I2C_SDA
IO
Sensor I2C bus data
P1.04 TX4
O
System UART4, TX data
P1.05 MAX_BACKUP_EN
O
MAX-M10 backup power enable
P1.06 CTS4
I
System UART4, CTS flow control
P1.07 LED_RED
O
Application RGB LED
–
red color
P1.08 RX4
I
System UART4, RX data
P1.09 NINA_RST
O
NINA-W15 reset
P1.10 NORA_NINA_COM_EN
O
System UART2/UART6 selection
P1.11 RX6
I
System UART6, RX data
P1.12 DTR6
O
System UART6, DTR flow control
P1.13 TX5
O
System UART5, TX data
P1.14 RX5
I
System UART5, RX data
P1.15 NORA_MAX_COM_EN
O
System UART3/UART5 selection
Table 7: NORA-B1 GPIO assignments
3.4.1.2
Serial Wire Debug (SWD)
As an open CPU module, NORA-B1 may be reprogrammed with other applications. The SWD port is
provided by two connections: A 2x5, 1.27 mm, center-keyed header that is accessible without opening
the case, and a Tag-Connect TC2030-CTX-NL footprint on both sides of the PCBA. See also
The three SWD connections are in parallel. Only one SWD connection may be used at a time.
and
show the positions of both interfaces.
measurement test points.
