nbiot2

---

NB IoT 2 Click

NB IoT 2 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.

---

Click Library

• Author : Stefan Ilic
• Date : Feb 2023.
• Type : UART type

Software Support

Example Description

This example reads and processes data from NB IoT 2 Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.NBIoT2

Example Key Functions

• nbiot2_cfg_setup Config Object Initialization function.

void nbiot2_cfg_setup ( nbiot2_cfg_t *cfg );

• nbiot2_init Initialization function.

err_t nbiot2_init ( nbiot2_t *ctx, nbiot2_cfg_t *cfg );

• nbiot2_set_rst_pin_state This function sets RST pin state.

void nbiot2_set_rst_pin_state ( nbiot2_t *ctx, uint8_t state );

• nbiot2_hw_reset NB IoT 2 hardware reset function.

void nbiot2_hw_reset ( nbiot2_t *ctx );

• nbiot2_send_cmd NB IoT 2 send command function.

void nbiot2_send_cmd ( nbiot2_t *ctx, char *cmd );

Application Init

Initializes driver, wake-up module and sets default configuration for connecting device to network.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    nbiot2_cfg_t nbiot2_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.
    nbiot2_cfg_setup( &nbiot2_cfg );
    NBIOT2_MAP_MIKROBUS( nbiot2_cfg, MIKROBUS_1 );
    if ( UART_ERROR == nbiot2_init( &nbiot2, &nbiot2_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_printf( &logger, " - Reseting device... \r\n" );
    nbiot2_hw_reset( &nbiot2 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    app_error_flag = nbiot2_process( );
    nbiot2_error_check( app_error_flag );
    
    nbiot2_send_cmd( &nbiot2, NBIOT2_CMD_AT );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );
    
    nbiot2_send_cmd( &nbiot2, NBIOT2_CMD_ATI );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_CFUN, "1" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_QSPCHSC, "1" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_CPSMS, "1" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );
    
    nbiot2_set_apn( &nbiot2, SIM_APN );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );   
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_QRST, "1" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    app_error_flag = nbiot2_process( );
    nbiot2_error_check( app_error_flag );  
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_QBAND, "1,20" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );      
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_CEREG, "2" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );   
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_CSCON, "1" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );  
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_QNBIOTEVENT, "1,1" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );  
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_SM, "LOCK" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );  
    
    nbiot2_send_cmd_with_parameter( &nbiot2, NBIOT2_CMD_QSCLK, "0" );
    app_error_flag = nbiot2_check_response( );
    nbiot2_error_check( app_error_flag );  
    
    log_info( &logger, " Application Task " );
    
    app_connection_status = CONFIGURATION_FOR_EXAMPLE;
    
    app_buf_len = 0;
    app_buf_cnt = 0;
}

Application Task

This application is split into two examples:

• TCP/UDP example - connecting to echo server and writing and reading data.
• SMS example - Sending SMS message to desired number using TEXT or PDU mode.

void application_task ( void ) 
{   
    switch( app_connection_status )
    {
        case CONFIGURATION_FOR_EXAMPLE:
        {
            nbiot2_config_device_for_example( );
            break;
        }
        case EXAMPLE:
        {
            #if defined( NBIOT2_TCP_UDP_EXAMPLE )
                nbiot2_tcp_udp_example( );
            #endif   
            #if defined( NBIOT2_SMS_EXAMPLE )
                nbiot2_send_sms( );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
                Delay_ms ( 1000 );
            #endif
            break;
        }
        default:
        {
            log_error( &logger, "Application status error!" );
            app_connection_status = CONFIGURATION_FOR_EXAMPLE;
            Delay_ms ( 1000 );
            break;
        }
    }
}

Note

In order for the examples to work, user needs to set the APN and SMSC (SMS PDU mode only) of entered SIM card as well as the phone number to which he wants to send an SMS. Enter valid values for the following macros: SIM_APN, SIM_SMSC and PHONE_NUMBER_TO_MESSAGE.

Example:

• SIM_APN "internet"
• SIM_SMSC "+381610401"
• PHONE_NUMBER_TO_MESSAGE "+381659999999"

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.

---