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mikroSDK Library

NB IoT click

Rating:

6

Author: MikroElektronika Team

Last Updated: 2018-10-08

Category: GSM / GPRS

Downloaded: 533 times

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NB IoT click is a Click board that allows LTE Cat NB1 connectivity by utilizing Quectel BC95, a specialized multi-band IoT module with very low power requirements and compact form factor, making it perfectly suited for various IoT-based applications.

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mikroSDK Library Blog

NB IoT click

NB IoT click

Native view of the NB IoT click board.

View full image
NB IoT click

NB IoT click

Front and back view of the NB IoT click board.

View full image

Library Description

The Library carries generic command parser adopted for AT command based modules.

Key functions:

  • nbiot_cmdSingle - Sends provided command to the module
  • nbiot_setHandler - Handler assignation to the provied command
  • nbiot_modulePower - Turn on module

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes all necessary GPIO pins, UART used for the communcation with NB IoT module and UART used for infromation logging
  • Application Initialization - Initializes driver, power on module and sends few command for the default module configuration
  • Application Task - Running in parallel core state machine.

Commands :

  • Command: AT, Basic command
  • Command: ATE, Set Command Echo Mode
  • Command: ATI, product information
  • Command: AT+CFUN, Set UE Functionality
  • Command: AT+CIMI, Request International Mobile Subscriber Identity
  • Command: AT+CGDCONT, Define a PDP Context
  • Command: AT+NCONFIG, Enable scrambling function
  • Command: AT+NBAND, set band 8=900 MHz, 20=800 MHz provided by operator
  • Command: AT+CGDCONT, Set mobile operator APN for PDP context
  • Command: AT+CEREG, Enable network registration URCs
  • Command: AT+COPS, set MCC and MNC values provided by operator
  • Command: AT+NSOCR, create an UDP socket
  • Command: AT+NSOST, send UDP message
  • Command: AT+NSOCL, close socket
// MODULE POWER ON
    nbiot_hfcEnable( 1 );
    nbiot_modulePower( 0 );

// MODULE INIT

    //Generic AT command 
    nbiot_cmdSingle( &AT[0] );
    nbiot_cmdSingle( &ATE[0] );
    nbiot_cmdSingle( &ATI[0] );
    nbiot_cmdSingle( &AT_CFUN[0] );
    nbiot_cmdSingle( &AT_CIMI[0] );
    nbiot_cmdSingle( &AT_CGDCONT[0] );
  
    // UDP server - AT command 
    nbiot_cmdSingle( &AT_NCONFIG[0] );
    nbiot_cmdSingle( &AT_NCONFIG1[0] );
    nbiot_cmdSingle( &AT_NCONFIG2[0] );
    nbiot_cmdSingle( &AT_NBAND[0] );
    nbiot_cmdSingle( &AT_CGDCONT1[0] );
    nbiot_cmdSingle( &AT_CEREG[0] );
    nbiot_cmdSingle( &AT_COPS[0] );
    nbiot_cmdSingle( &AT_NSOCR[0] );
    nbiot_cmdSingle( &AT_NSOST[0] );
    nbiot_cmdSingle( &AT_NSOCL[0] );

Additional Functions :

All additional functions such as timer initialization and default handler.

Notes :

  • UART polling works much better with HFC enabled.
  • In case of usage of other MCUs Timer initialization must be adjusted according to your MCU.

Other mikroE Libraries used in the example:

String Conversion

Additional notes and information

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.

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