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mikroSDK Library

RTC 4 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.10

mikroSDK Library: 2.0.0.0

Category: RTC

Downloaded: 180 times

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License: MIT license  

RTC4 Click carries DS2417, a real time clock/calendar with a 1-Wire MicroLAN interface and a programmable interrupt for system output.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


RTC 4 Click

RTC 4 Click carries DS2417, a real time clock/calendar with a 1-Wire MicroLAN interface and a programmable interrupt for system output.

rtc4_click.png

Click Product page


Click library

  • Author : Aleksandra Cvjeticanin
  • Date : Mar 2022.
  • Type : One Wire type

Software Support

We provide a library for the RTC 4 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 RTC 4 Click driver.

Standard key functions :

  • rtc4_cfg_setup Config Object Initialization function.

    void rtc4_cfg_setup ( rtc4_cfg_t *cfg );
  • rtc4_init Initialization function.

    err_t rtc4_init ( rtc4_t *ctx, rtc4_cfg_t *cfg );

Example key functions :

  • rtc4_get_interrupt This function checks the interrupt state of the DS2417 Real time clock/calendar.

    uint8_t rtc4_get_interrupt ( rtc4_t *ctx );
  • rtc4_set_date_time This function sets date and time structure along with interrupt interval.

    err_t rtc4_set_date_time ( rtc4_t *ctx, rtc4_date_t *date, rtc4_time_t *time, uint8_t int_interval );
  • rtc4_get_date_time This function gets RTC4 time and date structure.

    err_t rtc4_get_date_time ( rtc4_t *ctx, rtc4_date_t *date, rtc4_time_t *time );

Example Description

This example demonstrates the use of the RTC 4 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger and then sets the starting time to 23:59:50 and date to 31.12.2022.


void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    rtc4_cfg_t rtc4_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.
    rtc4_cfg_setup( &rtc4_cfg );
    RTC4_MAP_MIKROBUS( rtc4_cfg, MIKROBUS_1 );
    if ( ONE_WIRE_ERROR == rtc4_init( &rtc4, &rtc4_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( RTC4_ERROR == rtc4_check_communication ( &rtc4 ) )
    {
        log_error( &logger, " Check communication." );
        for ( ; ; );
    }

    time.hours = 23;
    time.min = 59; 
    time.sec = 50; 

    date.day = 31;
    date.month = 12; 
    date.year = 2022; 

    rtc4_set_date_time ( &rtc4, &date, &time, RTC4_DCB_INTERVAL_1S ); 

    log_info( &logger, " Application Task " );
}    

Application Task

With the usage of rtc4_get_date_time we get the time and date from the register and display them on the UART Terminal. The counter increments once per second.

void application_task ( void ) 
{
    while ( rtc4_get_interrupt ( &rtc4 ) ); 

    if ( RTC4_OK == rtc4_get_date_time ( &rtc4, &date, &time ) ) 
    {
        log_printf( &logger, "Time: %.2u:%.2u:%.2u\r\n", 
                    ( uint16_t ) time.hours, ( uint16_t ) time.min, ( uint16_t ) time.sec ); 
        log_printf( &logger, "Date: %.2u/%.2u/%u\r\n", 
                    ( uint16_t ) date.day, ( uint16_t ) date.month, ( uint16_t ) date.year ); 
        log_printf( &logger, "------------------------\r\n\n"); 
    }
}

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.RTC4

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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