nbiot7

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NB IoT 7 Click

NB IoT 7 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Stefan Filipovic
• Date : Jan 2025.
• Type : UART type

Software Support

Example Description

Application example shows device capability of connecting to the network and sending TCP/UDP messages using standard "AT" commands.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.NBIoT7

Example Key Functions

• nbiot7_cfg_setup This function initializes Click configuration structure to initial values.

void nbiot7_cfg_setup ( nbiot7_cfg_t *cfg );

• nbiot7_init This function initializes all necessary pins and peripherals used for this Click board.

err_t nbiot7_init ( nbiot7_t *ctx, nbiot7_cfg_t *cfg );

• nbiot7_set_sim_apn This function sets APN for sim card.

void nbiot7_set_sim_apn ( nbiot7_t *ctx, uint8_t *sim_apn );

• nbiot7_cmd_set This function sets a value to a specified command of the Click module.

void nbiot7_cmd_set ( nbiot7_t *ctx, uint8_t *cmd, uint8_t *value );

• nbiot7_cmd_get This function is used to get the value of a given command from the Click module.

void nbiot7_cmd_get ( nbiot7_t *ctx, uint8_t *cmd );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    nbiot7_cfg_t nbiot7_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    nbiot7_cfg_setup( &nbiot7_cfg );
    NBIOT7_MAP_MIKROBUS( nbiot7_cfg, MIKROBUS_POSITION_NBIOT7 );
    if ( UART_ERROR == nbiot7_init( &nbiot7, &nbiot7_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );

    app_state = NBIOT7_POWER_UP;
    log_printf( &logger, ">>> APP STATE - POWER UP <<<\r\n\n" );
}

Application Task

Application task is split in few stages:

• NBIOT7_POWER_UP:

  Powers up the device, enables command echo, and reads system information.

• NBIOT7_CONFIG_CONNECTION:

  Sets configuration to device to be able to connect to the network.

• NBIOT7_CHECK_CONNECTION:

  Waits for the network registration indicated via CEREG command and then checks the signal quality report.

• NBIOT7_CONFIG_EXAMPLE:

  Configures device for the selected example.

• NBIOT7_EXAMPLE:

  Sends a TCP/UDP message to the echo server.

void application_task ( void )
{
    switch ( app_state )
    {
        case NBIOT7_POWER_UP:
        {
            if ( NBIOT7_OK == nbiot7_power_up( &nbiot7 ) )
            {
                app_state = NBIOT7_CONFIG_CONNECTION;
                log_printf( &logger, ">>> APP STATE - CONFIG CONNECTION <<<\r\n\n" );
            }
            break;
        }
        case NBIOT7_CONFIG_CONNECTION:
        {
            if ( NBIOT7_OK == nbiot7_config_connection( &nbiot7 ) )
            {
                app_state = NBIOT7_CHECK_CONNECTION;
                log_printf( &logger, ">>> APP STATE - CHECK CONNECTION <<<\r\n\n" );
            }
            break;
        }
        case NBIOT7_CHECK_CONNECTION:
        {
            if ( NBIOT7_OK == nbiot7_check_connection( &nbiot7 ) )
            {
                app_state = NBIOT7_CONFIG_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - CONFIG EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case NBIOT7_CONFIG_EXAMPLE:
        {
            if ( NBIOT7_OK == nbiot7_config_example( &nbiot7 ) )
            {
                app_state = NBIOT7_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case NBIOT7_EXAMPLE:
        {
            nbiot7_example( &nbiot7 );
            break;
        }
        default:
        {
            log_error( &logger, " APP STATE." );
            break;
        }
    }
}

Note

In order for the example to work, user needs to set the SIM_APN of entered SIM card.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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