LTE IoT 3 Click

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  • MIKROE-4118
  • 4118
LTE IoT 3 Click  is a compact add-on board that contains a Low Power Wide Area (LPWA)...more
Product information "LTE IoT 3 Click"

LTE IoT 3 Click is a compact add-on board that contains a Low Power Wide Area (LPWA) Wireless IoT module that allows connections to the LTE CAT-M1, CAT NB1/2, and 2G networks. This board features the EXS82-W, LTE-IoT Wireless Module from Thales that offers a rich set of Internet protocols and industry-standard interfaces such as UART, USB, etc. Global IoT connectivity, integrated GNSS support, SMS support, extended coverage range, and reduced power consumption makes this single IoT module an excellent choice for device makers while ensuring worldwide reliability. This Click board™ is fitting for small, battery-operated devices in remote locations such as smart meters, asset trackers, healthcare apps, wearables, smart city solutions, and many more.

LTE IoT 3 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.

LTE IoT 3 Click is based on the EXS82-W, a Low Power Wide Area (LPWA) Wireless IoT module that allows connections to the LTE CAT-M1, CAT NB1/2, and 2G networks from Thales. EXS82 IoT module supports all LTE bands and offers an efficient architecture with PSM and eDRX plus embedded processing. The EXS82 also includes a module services engine that supports a range of Internet services and optimized operations. State of the art security features protect the device as well as data and provide secure enrollment in cloud platforms enabling trust in the IoT ecosystem. The module’s simplified power supply design and advanced management system extend battery lifetime and improve the total cost of ownership.

lte iot 3 click inner

The integrated GNSS receiver supports the NMEA protocol via the ASC0 interface, which represents combined electrical and data specification for communication between various electronic devices including GNSS receivers. By default, the GNSS receiver is switched off. It has to be switched on and configured using AT commands.

This Click board™ is equipped with the USB type C connector. It allows the module to be powered and configured by a personal computer (PC) using FT230X, a compact USB to a basic serial UART interface device which has been designed to operate efficiently with USB host controllers by using as little bandwidth as possible when compared to the total USB bandwidth available. The UART interface operates at 115200 bps and it is used for exchanging AT commands with the host, data transfer, and the firmware update. It also possesses the RX/TX LED Indicator whose indicates whether the bridge is in RX or TX function.

PWR Header can be used for power consumption monitoring:

J1 jumper can be used for power consumption monitoring.

LTE IoT 3 Click can be battery powered and used as a stand-alone device. It also has MC34671, a fully-integrated Li-Ion or Li-Polymer battery charger that allows charging of battery when Click board™ is inserted in mikroBUS™ socket or plugged into a USB port, while the CHG LED indicator which will indicate the charging in progress and will turn off once the battery charging is finished. The Nano SIM card holder on the back of the Click board™ is used to install a nano-SIM card. Two SMA antenna connectors with an impedance of 50Ω are used for connecting the appropriate antennas: there is one SMA connector for LTE antenna and the second one for GNSS antenna on which active antennas can be used either supplied with 3V or 5V, that can be selected by appropriate jumper (J2 or J3).

The yellow LED labeled as STAT is used to visually indicate different operating modes of the module. Another indicator that this Click board™ has is the PWI LED indicator that reports the module’s power state and shows whether it is active or in Power-Down mode. The onboard pushbutton labeled as ON is routed to the RST pin on the mikroBUS™ and it represents the ignition button.

This Click Board™ uses the UART communication interface, but it is also left the option for the user to use other interfaces such as SPI and I2C if he wants to configure the module as SPI or I2C Master and write the library by himself. That can be achieved by populating the appropriate jumpers on the back of the board (J4 – J9), depending on the desired communication.

This Click board™ can be interfaced with both 3.3V and 5V MCUs because a proper logic voltage level conversion is performed by appropriate voltage level shifters, while the on-board LDOs are ensuring that the module is powered by recommended voltage levels.

Specifications:

Type

GPS+GNSS,LTE IoT

Applications

Can be used for small, battery-operated devices in remote locations such as smart meters, asset trackers, healthcare apps, wearables, smart city solutions, and many more.

On-board modules

LTE IoT 3 Click is based on the EXS82-W, a Low Power Wide Area (LPWA) Wireless IoT module that allows connections to the LTE CAT-M1, CAT NB1/2, and 2G networks from Thales.

Key Features

Power saving modes, LTE bands that allows multiple regions coverage, dual SMA antenna connectors, USB connectivity, visual network and status indication, and more

Interface

UART,USB

Compatibility

mikroBUS

Click board size

L (57.15 x 25.4 mm)

Input Voltage

3.3V,5V

PinOut Diagram:

This table shows how the pinout on LTE IoT 3 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes

Pin

Mikrobus logo.png

Pin

Notes

SUSPEND Mode

SMI

1

AN

PWM

16

CS

SPI Chip Select

Ignition

ON

2

RST

INT

15

RTS

Ready to Send

Clear to Send

CTS

3

CS

RX

14

TX

UART TX

SPI Clock

SCK

4

SCK

TX

13

RX

UART RX

SPI Data OUT

SDO

5

MISO

SCL

12

SCL

I2C Clock

SPI Data IN

SDI

6

MOSI

SDA

11

SDA

I2C Data

Power Supply

3.3V

7

3.3V

5V

10

5V

Power Supply

Ground

GND

8

GND

GND

9

GND

Ground

OnBoard Settings And Indicators:

Label

Name

Default

 Description

LD1

PWR

-

Power LED Indicator

LD2

CHG

-

Charging LED Indicator

LD3

PWI

-

PWI LED Indicator

LD4

STAT

-

Status LED Indicator

LD5

RX/TX

-

RX/TX LED Indicator

SW1

ON

-

Power button: Power ON - hold pressed for 150ms, Power OFF - hold pressed for 1.5s

J1

-

Populated 1.2.3

Power Consumption Monitoring

J2,J3

-

J2 populated,
J3 not populated

Active GNSS antenna power selection

J4 - J7

-

not populated

SPI selection

J8, J9

-

not populated

I2C selection

CN1

GNSS

-

GNSS SMA Antenna Connector

CN2

LTE

-

LTE SMA Antenna Connector

SIM

SIM

-

Nano SIM Card Holder

LTE IOT 3 Click Electrical Specifications:

Description

Min

Typ

Max

Unit

Supply Voltage

2.6

-

4.8

V

GSM QUAD-Band Range

850

-

1900

mHz

LTE NBIOT 17-Band Range

600

-

2100

mHz

LTE Cat-M 17-Band Range

700

-

2100

mHz

Operating Temperature Range

-40

-

+90

°C

Software Support:

We provide a library for the LTE IoT 3 Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

Library provides function for controlling device pins, and function for sendint AT commands over UART communication.

Key functions:

  • void lteiot3_send_cmd ( uint8_t *cmd_buf ) - Function for sending commands to device.

  • void lteiot3_set_pin_on ( uint8_t pin_state  - Function for setting on pin state.

Examples description

The application is composed of three sections :

  • System Initialization - Initialization of UART MODULE and additional pins

  • Application Initialization - Turns on device and sends initial commands

  • Application Task - Checks some device parameters by sending AT commands

void application_task ( )
{
lteiot3_send_cmd( &AT_CGATT[0] );
Delay_ms( 5000 );
log_buffer();
lteiot3_send_cmd( &AT_CEREG[0] );
Delay_ms( 5000 );
log_buffer();
lteiot3_send_cmd( &AT_CSQ[0] );
Delay_ms( 5000 );
log_buffer();
}

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

  • Conversions

  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

MikroSDK:

This Click board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.

Resources:

 Click board™ Catalog

 Click boards™

 mikroBUS™

 mikroSDK

Downloads:

 LTE IoT 3 click example on Libstock

 LTE IoT 3 click 2D and 3D files

 LTE IoT 3 click schematic

 SN74LVC1T45 datasheet

 FT230X datasheet

 EXS82 datasheet

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