ltecat18

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LTE Cat.1 8 Click

LTE Cat.1 8 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 : Feb 2025.
• Type : UART type

Software Support

Example Description

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

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.LTECat18

Example Key Functions

• ltecat18_cfg_setup This function initializes Click configuration structure to initial values.

  void ltecat18_cfg_setup ( ltecat18_cfg_t *cfg );

• ltecat18_init This function initializes all necessary pins and peripherals used for this Click board.

  err_t ltecat18_init ( ltecat18_t *ctx, ltecat18_cfg_t *cfg );

• ltecat18_set_sim_apn This function sets APN for sim card.

  void ltecat18_set_sim_apn ( ltecat18_t *ctx, uint8_t *sim_apn );

• ltecat18_send_sms_text This function sends text message to a phone number.

  void ltecat18_send_sms_text ( ltecat18_t *ctx, uint8_t *phone_number, uint8_t *sms_text );

• ltecat18_cmd_set This function sets a value to a specified command of the Click module.

  void ltecat18_cmd_set ( ltecat18_t *ctx, uint8_t *cmd, uint8_t *value );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    ltecat18_cfg_t ltecat18_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    ltecat18_cfg_setup( &ltecat18_cfg );
    LTECAT18_MAP_MIKROBUS( ltecat18_cfg, MIKROBUS_1 );
    if ( UART_ERROR == ltecat18_init( &ltecat18, &ltecat18_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
 
    app_state = LTECAT18_POWER_UP;
    log_printf( &logger, ">>> APP STATE - POWER UP <<<\r\n\n" );
}

Application Task

Application task is split in few stages:

• LTECAT18_POWER_UP:

  Powers up the device, performs a device factory reset and reads system information.

• LTECAT18_CONFIG_CONNECTION:

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

• LTECAT18_CHECK_CONNECTION:

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

• LTECAT18_CONFIG_EXAMPLE:

  Configures device for the selected example.

• LTECAT18_EXAMPLE:

  Depending on the selected demo example, it sends an SMS message (in PDU or TXT mode) or TCP/UDP message. By default, the TCP/UDP example is selected.

void application_task ( void )
{
    switch ( app_state )
    {
        case LTECAT18_POWER_UP:
        {
            if ( LTECAT18_OK == ltecat18_power_up( &ltecat18 ) )
            {
                app_state = LTECAT18_CONFIG_CONNECTION;
                log_printf( &logger, ">>> APP STATE - CONFIG CONNECTION <<<\r\n\n" );
            }
            break;
        }
        case LTECAT18_CONFIG_CONNECTION:
        {
            if ( LTECAT18_OK == ltecat18_config_connection( &ltecat18 ) )
            {
                app_state = LTECAT18_CHECK_CONNECTION;
                log_printf( &logger, ">>> APP STATE - CHECK CONNECTION <<<\r\n\n" );
            }
            break;
        }
        case LTECAT18_CHECK_CONNECTION:
        {
            if ( LTECAT18_OK == ltecat18_check_connection( &ltecat18 ) )
            {
                app_state = LTECAT18_CONFIG_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - CONFIG EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case LTECAT18_CONFIG_EXAMPLE:
        {
            if ( LTECAT18_OK == ltecat18_config_example( &ltecat18 ) )
            {
                app_state = LTECAT18_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case LTECAT18_EXAMPLE:
        {
            ltecat18_example( &ltecat18 );
            break;
        }
        default:
        {
            log_error( &logger, " APP STATE." );
            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 (SMS mode only) to which he wants to send an SMS. Enter valid values for the following macros: SIM_APN, SIM_SMSC and PHONE_NUMBER.

Example:

• SIM_APN "internet"
• SIM_SMSC "+381610401"
• PHONE_NUMBER "+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.

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