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README.md

LTE Cat.1-EU Click

LTE Cat.1-EU 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 : Jun 2021.
  • Type : UART type

Software Support

Example Description

This example reads and processes data from LTE Cat.1-EU Clicks.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.LTECat1EU

Example Key Functions

  • ltecat1eu_cfg_setup Config Object Initialization function.
void ltecat1eu_cfg_setup ( ltecat1eu_cfg_t *cfg );
  • ltecat1eu_init Initialization function.
err_t ltecat1eu_init ( ltecat1eu_t *ctx, ltecat1eu_cfg_t *cfg );
  • ltecat1eu_send_cmd This function sends the specified command to the Click module.
void ltecat1eu_send_cmd ( ltecat1eu_t *ctx, char *cmd );
  • ltecat1eu_send_cmd_with_parameter This function sends commands to the Click module.
void ltecat1eu_send_cmd_with_parameter ( ltecat1eu_t *ctx, char *at_cmd_buf, char *param_buf );
  • ltecat1eu_send_text_message This function sends text message to a phone number.
void ltecat1eu_send_text_message ( ltecat1eu_t *ctx, char *phone_number, char *message_context );

Application Init

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

void application_init ( void )  
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    ltecat1eu_cfg_t ltecat1eu_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 " );
    Delay_ms ( 1000 );
    
    // Click initialization.
    ltecat1eu_cfg_setup( &ltecat1eu_cfg );
    LTECAT1EU_MAP_MIKROBUS( ltecat1eu_cfg, MIKROBUS_1 );
    err_t init_flag  = ltecat1eu_init( &ltecat1eu, &ltecat1eu_cfg );
    if ( init_flag == UART_ERROR ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    
    log_info( &logger, " Power on device... " );
    
    ltecat1eu_power_on( &ltecat1eu );
    
    // CFUN - restart ME
    ltecat1eu_send_cmd_with_parameter( &ltecat1eu, LTECAT1EU_CMD_CFUN, "0" );
    app_error_flag = ltecat1eu_rsp_check( RSP_SYSSTART );
    ltecat1eu_error_check( app_error_flag );
    
    // AT
    ltecat1eu_send_cmd( &ltecat1eu, LTECAT1EU_CMD_AT );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    // ATI - product information
    ltecat1eu_send_cmd( &ltecat1eu, LTECAT1EU_CMD_ATI );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    // CGMR - firmware version
    ltecat1eu_send_cmd( &ltecat1eu, LTECAT1EU_CMD_CGMR );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    // COPS - deregister from network
    ltecat1eu_send_cmd_with_parameter( &ltecat1eu, LTECAT1EU_CMD_COPS, "2" );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    // CGDCONT - set sim apn
    ltecat1eu_set_sim_apn( &ltecat1eu, SIM_APN );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
     
    // CFUN - full funtionality
    ltecat1eu_send_cmd_with_parameter( &ltecat1eu, LTECAT1EU_CMD_CFUN, "1" );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    // COPS - automatic mode
    ltecat1eu_send_cmd_with_parameter( &ltecat1eu, LTECAT1EU_CMD_COPS, "0" );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    
    // CEREG - network registration status
    ltecat1eu_send_cmd_with_parameter( &ltecat1eu, LTECAT1EU_CMD_CEREG, "2" );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    // CIMI - request IMSI
    ltecat1eu_send_cmd( &ltecat1eu, LTECAT1EU_CMD_CIMI );
    app_error_flag = ltecat1eu_rsp_check( RSP_OK );
    ltecat1eu_error_check( app_error_flag );
    Delay_ms ( 500 );
    
    app_buf_len = 0;
    app_buf_cnt = 0;
    app_connection_status = WAIT_FOR_CONNECTION;
    log_info( &logger, " Application Task " );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

Application Task

Waits for device to connect to network and then sends SMS to selected phone number.

void application_task ( void ) 
{
    if ( app_connection_status == WAIT_FOR_CONNECTION ) {
        // CGATT - request IMSI
        ltecat1eu_send_cmd_check( &ltecat1eu, LTECAT1EU_CMD_CGATT );
        app_error_flag = ltecat1eu_rsp_check( RSP_OK );
        ltecat1eu_error_check( app_error_flag );
        Delay_ms ( 500 );
        
        // CEREG - network registration status
        ltecat1eu_send_cmd_check( &ltecat1eu, LTECAT1EU_CMD_CEREG );
        app_error_flag = ltecat1eu_rsp_check( RSP_OK );
        ltecat1eu_error_check( app_error_flag );
        Delay_ms ( 500 );
        
        // CSQ - signal quality
        ltecat1eu_send_cmd( &ltecat1eu, LTECAT1EU_CMD_CSQ );
        app_error_flag = ltecat1eu_rsp_check( RSP_OK );
        ltecat1eu_error_check( app_error_flag );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    } else {
        log_info( &logger, "CONNECTED TO NETWORK" );
        
        // SMS message format - text mode
        ltecat1eu_send_cmd_with_parameter( &ltecat1eu, "AT+CMGF", "1" );
        app_error_flag = ltecat1eu_rsp_check( RSP_OK );
        ltecat1eu_error_check( app_error_flag );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        
        for( ; ; ) {   
            log_printf( &logger, "> Sending message to phone number...\r\n" );
            ltecat1eu_send_text_message( &ltecat1eu, PHONE_NUMBER_TO_MESSAGE, MESSAGE_CONTENT );
            app_error_flag = ltecat1eu_rsp_check( RSP_OK );
            ltecat1eu_error_check( app_error_flag );
            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 );
            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 );
            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 );
        }
    }
}

Note

In order for the example to work, user needs to set the phone number and sim apn to which he wants to send an SMS Enter valid data for the following macros: SIM_APN and PHONE_NUMBER_TO_MESSAGE.

E.g.

  • SIM_APN "vipmobile"
  • 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.