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mikroSDK Library

GSM Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.6

mikroSDK Library: 2.0.0.0

Category: GSM/LTE

Downloaded: 267 times

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License: MIT license  

GSM Click is a compact and powerful GSM cellular network communication solution, featuring the GSM/GPRS Telit GL865-QUAD module. This module features a full set of options for the cellular networking and communication, such as the network status indication, jamming detection, embedded TCP/IP stack, including TCP, IP, UDP, SMTP, ICMP and FTP protocols, full GPRS class 10 implementation; GSM supplementary functions such as the call barring, waiting, forwarding, and holding, calling line identification presentation or restriction (CLIP/CLIR), integrated voice communication codecs, and more.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


GSM Click

GSM Click is a compact and powerful GSM cellular network communication solution, featuring the GSM/GPRS Telit GL865-QUAD module. This module features a full set of options for the cellular networking and communication, such as the network status indication, jamming detection, embedded TCP/IP stack, including TCP, IP, UDP, SMTP, ICMP and FTP protocols, full GPRS class 10 implementation; GSM supplementary functions such as the call barring, waiting, forwarding, and holding, calling line identification presentation or restriction (CLIP/CLIR), integrated voice communication codecs, and more.

gsm_click.png

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : May 2023.
  • Type : UART type

Software Support

We provide a library for the GSM Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for GSM Click driver.

Standard key functions :

  • gsm_cfg_setup Config Object Initialization function.

    void gsm_cfg_setup ( gsm_cfg_t *cfg );
  • gsm_init Initialization function.

    err_t gsm_init ( gsm_t *ctx, gsm_cfg_t *cfg );

Example key functions :

  • gsm_set_sim_apn This function sets APN for sim card.

    void gsm_set_sim_apn ( gsm_t *ctx, uint8_t *sim_apn );
  • gsm_send_sms_text This function sends text message to a phone number.

    void gsm_send_sms_text ( gsm_t *ctx, uint8_t *phone_number, uint8_t *sms_text );
  • gsm_send_sms_pdu This function sends text message to a phone number in PDU mode.

    err_t gsm_send_sms_pdu ( gsm_t *ctx, uint8_t *service_center_number, uint8_t *phone_number, uint8_t *sms_text );

Example Description

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

The demo application is composed of two sections :

Application Init

Initializes the driver, tests the communication by sending "AT" command, and after that restarts the device.


void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    gsm_cfg_t gsm_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.
    gsm_cfg_setup( &gsm_cfg );
    GSM_MAP_MIKROBUS( gsm_cfg, MIKROBUS_1 );
    if ( UART_ERROR == gsm_init( &gsm, &gsm_cfg ) )
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }

    gsm_process( );
    gsm_clear_app_buf( );

    // Check communication
    gsm_send_cmd( &gsm, GSM_CMD_AT );
    error_flag = gsm_rsp_check( GSM_RSP_OK );
    gsm_error_check( error_flag );

    // Restart device
    #define RESTART_DEVICE "1,1"
    gsm_send_cmd_with_par( &gsm, GSM_CMD_CFUN, RESTART_DEVICE );
    error_flag = gsm_rsp_check( GSM_RSP_OK );
    gsm_error_check( error_flag );

    log_info( &logger, " Application Task " );
    example_state = GSM_CONFIGURE_FOR_NETWORK;
}

Application Task

Application task is split in few stages:

  • GSM_CONFIGURE_FOR_NETWORK: Sets configuration to device to be able to connect to the network.
  • GSM_WAIT_FOR_CONNECTION: Waits for the network registration indicated via CREG URC event and then checks the connection status.
  • GSM_CONFIGURE_FOR_EXAMPLE: Sets the device configuration for sending SMS or TCP/UDP messages depending on the selected demo example.
  • GSM_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 ( example_state )
    {
        case GSM_CONFIGURE_FOR_NETWORK:
        {
            if ( GSM_OK == gsm_configure_for_network( ) )
            {
                example_state = GSM_WAIT_FOR_CONNECTION;
            }
            break;
        }
        case GSM_WAIT_FOR_CONNECTION:
        {
            if ( GSM_OK == gsm_check_connection( ) )
            {
                example_state = GSM_CONFIGURE_FOR_EXAMPLE;
            }
            break;
        }
        case GSM_CONFIGURE_FOR_EXAMPLE:
        {
            if ( GSM_OK == gsm_configure_for_example( ) )
            {
                example_state = GSM_EXAMPLE;
            }
            break;
        }
        case GSM_EXAMPLE:
        {
            gsm_example( );
            break;
        }
        default:
        {
            log_error( &logger, " Example 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_TO_MESSAGE.

Example:

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

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.GSM

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


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