3gea

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3G-EA click

3G-EA click is a versatile cellular network communication solution, featuring the compact 3G UMTS/HSPA Quectel UG95 module. This module features a full set of options for the cellular networking and communication, such as the network indication, embedded TCP/UDP stack, HTTP/HTTPS stack, full GSM/GPRS/EDGE implementation, UMTS/HSDPA/HSUPA protocol implementation and more. 3G-EA click features data-rates of 7.2 Mb/s (downlink) and 5.76 Mb/s (uplink) in HSPA mode. Onboard 16bit audio CODEC IC adds high-quality voice communication capability.

click Product page

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Click library

• Author : Stefan Ilic
• Date : Jul 2021.
• Type : UART type

Software Support

We provide a library for the C3GEA 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 C3GEA Click driver.

Standard key functions :

• c3gea_cfg_setup Config Object Initialization function.

void c3gea_cfg_setup ( c3gea_cfg_t *cfg );

• c3gea_init Initialization function.

err_t c3gea_init ( c3gea_t *ctx, c3gea_cfg_t *cfg );

Example key functions :

• c3gea_module_power This function powers ON/OFF the module.

void c3gea_module_power ( c3gea_t *ctx, uint8_t state );

• c3gea_send_cmd_with_parameter This function sends a command with specified parameter to the click module.

void c3gea_send_cmd_with_parameter ( c3gea_t *ctx, char *at_cmd_buf, char *param_buf );

• c3gea_send_sms_text This function sends text message to a phone number.

void c3gea_send_sms_text ( c3gea_t *ctx, char *phone_number, char *sms_text );

Example Description

This example reads and processes data from 3G EA click.

The demo application is composed of two sections :

Application Init

Initializes the driver and powers up the module, then sets default configuration for connecting the device to network.

void application_init ( void ) {
    log_cfg_t log_cfg;  /**< Logger config object. */
    c3gea_cfg_t c3gea_cfg;  /**< Click config object. */

    // Logger initialization.

    LOG_MAP_USB_UART( log_cfg );
    log_cfg.level = LOG_LEVEL_DEBUG;
    log_cfg.baud = 115200;
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.

    c3gea_cfg_setup( &c3gea_cfg );
    C3GEA_MAP_MIKROBUS( c3gea_cfg, MIKROBUS_1 );
    c3gea_init( &c3gea, &c3gea_cfg );

    c3gea_module_power( &c3gea, C3GEA_MODULE_POWER_ON );
    
    // dummy read
    c3gea_process( );
    c3gea_clear_app_buf( );
    
    // AT
    c3gea_send_cmd( &c3gea, C3GEA_CMD_AT );
    app_error_flag = c3gea_rsp_check( );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // ATI - product information
    c3gea_send_cmd( &c3gea, C3GEA_CMD_ATI );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // CGMR - firmware version
    c3gea_send_cmd( &c3gea, C3GEA_CMD_CGMR );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // CMEE - Report Mobile Equipment Error
    c3gea_send_cmd_with_parameter( &c3gea, C3GEA_CMD_CMEE, "2" );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // COPS - deregister from network
    c3gea_send_cmd_with_parameter( &c3gea, C3GEA_CMD_COPS, "2" );
    Delay_ms( 4000 );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // CGDCONT - set sim apn
    c3gea_set_sim_apn( &c3gea, SIM_APN );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // CFUN - full funtionality
    c3gea_send_cmd_with_parameter( &c3gea, C3GEA_CMD_CFUN, "1" );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // COPS - automatic mode
    c3gea_send_cmd_with_parameter( &c3gea, C3GEA_CMD_COPS, "0" );
    Delay_ms( 4000 );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_error_check( app_error_flag );
    Delay_ms( 500 );
    
    // CREG - network registration status
    c3gea_send_cmd_with_parameter( &c3gea, C3GEA_CMD_CREG, "1" );
    app_error_flag = c3gea_rsp_check(  );
    c3gea_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( 5000 );
}

Application Task

Waits for device to connect to network and then sends a desired SMS to the selected phone number approximately every 30 seconds.

void application_task ( void ) {
     if ( app_connection_status == WAIT_FOR_CONNECTION ) {
        // CREG - network registration status
        c3gea_send_cmd_check( &c3gea, C3GEA_CMD_CREG );
        app_error_flag = c3gea_rsp_check(  );
        c3gea_error_check( app_error_flag );
        Delay_ms( 500 );
        
        // CSQ - signal quality
        c3gea_send_cmd( &c3gea, C3GEA_CMD_CSQ );
        app_error_flag = c3gea_rsp_check(  );
        c3gea_error_check( app_error_flag );
        Delay_ms( 3000 );
    } else {
        log_info( &logger, "CONNECTED TO NETWORK" );
        
        // SMS message format - PDU mode
        c3gea_send_cmd_with_parameter( &c3gea, C3GEA_CMD_CMGF, "0" );
        app_error_flag = c3gea_rsp_check(  );
        c3gea_error_check( app_error_flag );
        Delay_ms( 3000 );
        
        for( ; ; ) {   
            log_printf( &logger, "> Sending message to phone number...\r\n" );
            c3gea_send_sms_pdu ( &c3gea, SIM_SMSC, PHONE_NUMBER_TO_MESSAGE, MESSAGE_CONTENT );
            app_error_flag = c3gea_rsp_check(  );
            c3gea_error_check( app_error_flag );
            Delay_ms( 10000 );
            Delay_ms( 10000 );
            Delay_ms( 10000 );
        }
    }
}

Note

In order for the example to work, user needs to set the phone number to which he wants to send an SMS, and also will need to set an APN and SMSC (required for PDU mode only) of entered SIM card. Enter valid data for the following macros: SIM_APN, SIM_SMSC and PHONE_NUMBER_TO_MESSAGE.

E.g.

• SIM_APN "vipmobile"
• 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.C3GEA

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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