ST X-NUCLEO-GNSS2A1 Bedienungsanleitung

Introduction

The X-NUCLEO-GNSS2A1 expansion board is based on the Teseo-VIC3DA tiny GNSS module. It represents an affordable,

easy-to-use, global navigation satellite system (GNSS) module, which embeds a TeseoIII single die standalone positioning

receiver IC, usable in different configurations in your STM32 Nucleo project.

The Teseo-VIC3DA is a compact (16.0 x 12.2 mm) module that provides superior accuracy thanks to the on-board temperature

compensated crystal oscillator (TCXO) and a reduced time-to-first fix (TTFF) with its dedicated real-time clock (RTC) oscillator.

The Teseo-VIC3DA module runs the GNSS firmware (X-CUBE-GNSS1) to perform all the GNSS operations including

acquisition, tracking, navigation, and data output without any external memory support.

The X-NUCLEO-GNSS2A1 expansion board is compatible with the Arduino UNO R3 connector and the ST morpho connector. It

can be plugged to an STM32 Nucleo development board and stacked with additional STM32 Nucleo expansion boards.

Figure 1. X-NUCLEO-GNSS2A1 expansion board

Getting started with the X-NUCLEO-GNSS2A1 expansion board based on the

Teseo-VIC3DA dead-reckoning GNSS module for STM32 Nucleo

UM3020

User manual

UM3020 - Rev 1 - July 2022

For further information contact your local STMicroelectronics sales office. www.st.com

1Getting started

1.1 Board overview

The X-NUCLEO-GNSS2A1 expansion board for STM32 Nucleo is a GNSS multiconstellation receiver with dead-

reckoning that covers a wide range of applications where geo-location is required.

The key features are:

• Operating supply voltage: 3.3 V

• Ambient temperature: -40/+85°C

• Sensitivity: -163 dBm (tracking mode)

• Interfaces:

– a UART port

– an I²C port

– configurable digital I/O time pulse

– EXTINT input for wake-up

• NMEA protocol

• Assisted GNSS:

– autonomous AGNSS

– real-time, server-based

• Simultaneous multiconstellation:

– GPS

– Galileo

– Glonass

– BeiDou

– QZSS

• Compatible with STM32 Nucleo development boards

• Compatible with the Arduino UNO R3 connector

•Teseo-VIC3DA dead-reckoning automotive firmware

• Provision of FWD and WHEELTICK signals

• Automotive GNSS and 6-axis inertial sensor

• LNA and SAW filters on the RF path

• SMA female antenna connector

• RoHS and WEEE compliant

UM3020

Getting started

UM3020 - Rev 1 page 2/21

1.2 Hardware and software requirements

The X-NUCLEO-GNSS2A1 must be plugged onto an STM32 Nucleo development board through the Arduino

UNO R3 connectors, as shown in the figure below.

Figure 2. X-NUCLEO-GNSS2A1 expansion board connected to an STM32 Nucleo development board

The X-NUCLEO-GNSS2A1 can be connected to any STM32 Nucleo development board, even though complete

testing has been performed on the NUCLEO-F401RE board.

To use the STM32 Nucleo development boards with the X-NUCLEO-GNSS2A1 expansion board, the following

software and hardware specifications are required:

• a PC with Microsoft Windows® 10 to install the software package (X-CUBE-GNSS1);

• an STM32 Nucleo development board (NUCLEO-L053R8 or NUCLEO-F401RE);

• a type A to mini-B USB cable to connect the STM32 Nucleo to the PC;

• the X-CUBE-GNSS1 software package;

•TESEO-SUITE.

The installation of the X-CUBE-GNSS1 and the TESEO-SUITE graphical user interface utility on the user PC

requires:

• 128 MB of RAM;

• 40 MB of hard disk space.

UM3020

Hardware and software requirements

UM3020 - Rev 1 page 3/21

1.3 Board setup

To set up the X-NUCLEO-GNSS2A1 expansion board, follow the procedure below.

Step 1. Check the jumper position shown below:

Table 1. X-NUCLEO-GNSS2A1 expansion board - jumper 1 default settings

Signal Jumper Configuration

I²C-SCL J11 Closed

I²C-SDA J12 Closed

VCC-VCC_IO J14 Closed

V14Bat J15 Closed

SYS_FWD J23 1-2

SYS_WHEELTICK J24 2-3

SYS_RESETn J25 1-2

SYS_WAKEUP J26 2-3

UART-RX J27 2-3

UART-TX J28 2-3

SYS_PPS J29 1-2

SYS_IRQ J30 2-3

Step 2. Connect the X-NUCLEO-GNSS2A1 to the STM32 Nucleo development board.

Step 3. Power the STM32 Nucleo development board using the type A mini-B USB cable.

Step 4. Program the STM32 Nucleo development board using the firmware example provided.

Step 5. Reset the MCU via the STM32 Nucleo development board [reset] button.

The evaluation kit is ready-to-use.

UM3020

Board setup

UM3020 - Rev 1 page 4/21

2Hardware description

2.1 X-NUCLEO-GNSS2A1 expansion board for STM32 Nucleo

The X-NUCLEO-GNSS2A1 allows testing the Teseo-VIC3DA GNSS module functionality via the firmware

package contained in the X-CUBE-GNSS1 software.

Important: Program the microcontroller on the STM32 Nucleo development board.

The Teseo-VIC3DA module and the STM32 Nucleo development board communicate through the expansion

board connectors (CN5, CN6, CN8, and CN9) as listed in the tables below.

Table 2. Interconnection between STM32 Nucleo development board and X-NUCLEO-GNSS2A1 expansion

board (left-side connectors)

STM32 Nucleo pins

X-NUCLEO-GNSS2A1

CN6 (power)

CN8 (analog)

Pin Signal

NC X

IOREF 2 3V3

RESET 3

3V3 4 3V3

5V 5

GND 6 GND

GND 7 GND

VIN 8

A0 1

A1 2

A2 3

A3 4

A4 5

A5 6

Table 3. Interconnection between STM32 Nucleo development board and X-NUCLEO-GNSS2A1 expansion

board (right-side connectors)

STM32 Nucleo pins

X-NUCLEO-GNSS2A1

CN5 (digital) CN9 (digital)

Pin Signal Pin Signal

D15 10 SCL2

D14 9 SDA2

AREF 8

GND 7 GND

D13 6 WAKE_UP

D12 5

D11 4

D10 3

UM3020

Hardware description

UM3020 - Rev 1 page 5/21

STM32 Nucleo pins

X-NUCLEO-GNSS2A1

CN5 (digital) CN9 (digital)

Pin Signal Pin Signal

D9 2 RESET

D8 1 RX0

D7 8 RESET

D6 7 PPS

D5 6

D4 5 WAKE_UP

D3 4

D2 3 TX0/PPS

D1 2 RX

D0 1 TX

2.2 Teseo-VIC3DA module

The X-NUCLEO-GNSS2A1 expansion board embeds the Teseo-VIC3DA automotive GNSS dead-reckoning

module with 6-axis IMU.

The Teseo-VIC3DA is an easy-to-use global navigation satellite system (GNSS) standalone module. It embeds

the TeseoIII single-die standalone positioning receiver IC, which works simultaneously on multiple constellations

(GPS/Galileo/Glonass/BeiDou/QZSS).

Table 4. Teseo-VIC3DA details

Feature Description

Sales type Teseo-VIC3DA

Package LLC 24 pins (16.0 mm x 12.2 mm)

Operating voltage 3.3 V

2.3 GNSS antenna

The GNSS antenna (manufacturer INPAQ, part number B3G02G-S3-XX-A) is attached to the board through a

SMA connector (with its trademark and model).

Important: The antenna provided by the manufacturer can be replaced only with an identical one.

2.4 UART, I²C, and GPIO connection options

The Teseo-VIC3DA module embedded in the X-NUCLEO-GNSS2A1 expansion board can be used to work with

the board in different configurations when different expansion boards are used and a conflict of signals occurs.

UM3020

Teseo-VIC3DA module

UM3020 - Rev 1 page 6/21

Table 5. X-NUCLEO-GNSS2A1 expansion board: Teseo-VIC3DA interface with the STM32 Nucleo

development board

Signal Pins STM32 Nucleo (optional connections)

I²C-SCL d15 -

I²C-SDA d14 -

Wakeup d13 d4

Reset d7 d9

PPS d6 d2

UART-RX d8 d1

UART-TX d2 d0

For the optional connections, modify the firmware according to the STM32 resources to be used.

2.5 Current measurement

To monitor the Teseo-VIC3DA module power consumption, insert an ammeter probe between J14 pin (VCC) and

J15 pin (VBAT).

As the Teseo-VIC3DA power consumption is very low during most of its operating time, an accurate instrument in

the range of few μA is required.

2.6 ODO connector

The ODO connector on the X-NUCLEO-GNSS2A1 exposes two input signals for the Teseo-VIC3DA, which

embeds the TESEO dead reckoning. These two signals are specific to dead-reckoning applications and provide

the odometer information using the pins FWD (pin2) and WHEELTICK (pin3).

UM3020

Current measurement

UM3020 - Rev 1 page 7/21

2.7 X-NUCLEO-GNSS2A1 expansion board component placement

Figure 3. X-NUCLEO-GNSS2A1 expansion board component placement details

UM3020

X-NUCLEO-GNSS2A1 expansion board component placement

UM3020 - Rev 1 page 8/21

3Schematic diagrams

Figure 4. X-NUCLEO-GNSS2A1 circuit schematic (1 of 3)

GNSS Module

Battery

SMD0402

SMD0603

ODO Connector

SMD0402

+VCC_IO

Battery Holder (CR2032)

+VCC_IO +VBatt

GND

+VBatt

GND

+VCC_IO

GND

+VCC_IO

SYS_RESETn

SYS_WAKEUP

I2C_CLOCK

I2C_DATA

AntOFFRF_IN

VCC_RF

SYS_FWD

SYS_WHEELTICK

SYS_IRQ

SYS_PPS

C14100pF

R10

330E

Green_LED

J16

con4-strip-male

BAT20J

R38 0E

J14

HEADER1x2

Closed

330E

R11

R420E

Red_LED

MUN2214T1G

R44 0E

R41 0E

R37 0E

R33

R40 0E

R390E

C13100nF

R36 0E

JR14

R35 0E

SHUNT 2.54 mm.

JR15

TP1

R43SHUNT 2.54 mm.0E

J15

HEADER1x2

Closed

BAT20J

TESEO-VIC3DATR

WakeUp

2Reserved

PPS

4WHEELTICK

IRQ

6Reserved_1

7Reserved_2

8nReset

9VCC_RF

GND

11 RF_IN

GND

12 GND 13

AntOFF

FWD 15

Reserved_3

Reserved_4

I2C_SDA

I2C_SCL

UART-TX

UART-RX

V_BAT

VCC 23

GND 24

VL1

PPS

RESETn SYS_RESETn

SYS_WAKEUP

WAKEUP

UART_TX TX

I2C_SDA

I2C_SCL

I2C_DATA

I2C_CLOCK

UART_RX

UART_TX

UART_RX

I2C_SCL

I2C_SDA

WAKEUP

PPS

AntOFF

RF_IN

RESETn

VCC_RF

FWD

WHEELTICK

FWD

WHEELTICK

IRQ

FWD SYS_FWD

WHEELTICK

IRQ

SYS_WHEELTICK

SYS_IRQ

PPS SYS_PPS

UM3020 - Rev 1 page 9/21

UM3020

Schematic diagrams

Figure 5. X-NUCLEO-GNSS2A1 circuit schematic (2 of 3)

NUCLEO CONNECTORS

CN7 of NUCLEO BOARD

CN8 of NUCLEO BOARDCN6 of NUCLEO BOARD

CN10 of NUCLEO BOARD

CN5 of NUCLEO BOARDCN9 of NUCLEO BOARD

{Default}

{D8 = PA9: STM32 USART1_TX}

{Default}

+3V3

IOREF

GND

I2C_CLOCK

I2C_DATA

+VCC_IO

SYS_FWD

SYS_WHEELTICK

SYS_RESETn

SYS_WAKEUP SYS_PPS

SYS_IRQ

J28

HEADER1X3

JR17

CN10

ST morpho

3 4

5 6

7 8

9 10

11 12

1314

15 16

17 18

19 20

21 22

23 24

25 26

2728

29 30

31 32

3334

35 36

3738

CN6

Arduino

J11

HEADER1x2

Closed

J24

HEADER1X3

CN5

Arduino

CN8

Arduino

JR9

J26

SHUNT 2.54 mm.

HEADER1X3

CN9

Arduino

J23

HEADER1X3

J12

HEADER1x2

Closed

JR13

CN7

1 2

ST morpho

3 4

5 6

7 8

9 10

11 12

13 14

1516

17 18

1920

21 22

23 24

25 26

27 28

29 30

31 32

3334

35 36

37 38

J25

HEADER1X3

JR11

SHUNT 2.54 mm.

JR12

SHUNT 2.54 mm.

JR19

SHUNT 2.54 mm.

JR18

J29

SHUNT 2.54 mm.

HEADER1X3

J30

HEADER1X3

JR2

J27

SHUNT 2.54 mm.

HEADER1X3

JR16

SHUNT 2.54 mm.

JR4

PC11

PD2

SHUNT 2.54 mm.

E5V

GND

IOREF

RESET

+3V3

+5V

GND

VIN

PA0A0

PA1 A1

PA4 A2

PB0A3

PC1 A4

PC0 A5

D7 PA8

D5/PWMPB4

D6/PWMPB10

D4 PB5

PB3D3/PWM

D2 PA10

D1/RX PA2

D0/TXPA3

PC10

PC12

VDD

BOOT0

NC/PF6

NC/PF7

PA13

PA14

PA15

GND

PB7

PC13

PC14

PC15

PH0/PF0/PD0

PH1/PF1/PD1

PC2

VLCD/VBAT

PC3

PC8

PC6

PC5

U5V

PD8

PA12

PA11

PB12

PB11/NC

GND

PB2

PB1

PB15

PB14

PB13

AGND

PC4

NC/PF5

NC/PF4

PB8D15/SCL

PB9D14/SDA

AVDD

GND

PA5D13/SCK

PA6D12/MISO

PA7D11/MOSI/PWM

PB6D10/CS/PWM

PC7D9/PWM

D8 PA9

PC9

D15/SCL

D14/SDA

D6/PWM

D7 D8

SHUNT 2.54 mm.

{Default}

D9/PWM

SHUNT 2.54 mm.

{Default}

D13/SCK

SYS_WAKEUP

D1/RX

D0/TX D2

D2D6/PWM

SYS_PPS

{D2 = PA10: STM32 USART1_RX}

D13/SCK D9/PWM

SYS_IRQ

UM3020 - Rev 1 page 10/21

UM3020

Schematic diagrams

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