rtc12  2.0.0.0
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RTC 12 Click

RTC 12 Click is a compact add-on board that measures the passage of time. This board features the DS1343, a low-current SPI-configurable real-time clock (RTC) from Maxim Integrated. This timekeeping device provides an extremely low standby current permitting longer life from a backup supply source. Its clock/calendar feature provides seconds, minutes, hours, day, date, month, and year information.

Click Product page


Click library

  • Author : Nenad Filipovic
  • Date : May 2021.
  • Type : SPI type

Software Support

We provide a library for the Rtc12 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 Rtc12 Click driver.

Standard key functions :

Example key functions :

Example Description

This is an example that demonstrates the use of the RTC 12 Click boardâ„¢.

The demo application is composed of two sections :

Application Init

Initialization of SPI module, log UART and additional pins. After driver initialization and default settings, the app set the time to 23:59:50 and set the date to 27.05.'21.

void application_init ( void ) {
log_cfg_t log_cfg;
rtc12_cfg_t rtc12_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
rtc12_cfg_setup( &rtc12_cfg );
RTC12_MAP_MIKROBUS( rtc12_cfg, MIKROBUS_1 );
err_t init_flag = rtc12_init( &rtc12, &rtc12_cfg );
if ( init_flag == SPI_MASTER_ERROR ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
rtc12_default_cfg ( &rtc12 );
log_info( &logger, " Application Task " );
Delay_ms ( 100 );
date.day_of_week = 4;
date.day = 27;
date.month = 5;
date.year = 21;
rtc12_set_date( &rtc12, date );
Delay_ms ( 100 );
time.hours = 23;
time.min = 59;
time.sec = 50;
rtc12_set_time( &rtc12, time );
Delay_ms ( 100 );
}

Application Task

This is an example that shows the use of a RTC 12 Click boardâ„¢. In this example, we read and display the current time and date, which we also previously set. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on USB changes every 1 sec.

void application_task ( void ) {
rtc12_get_time( &rtc12, &time );
Delay_ms ( 1 );
rtc12_get_date( &rtc12, &date );
Delay_ms ( 1 );
if ( time.sec != new_sec ) {
log_printf( &logger, " Date : %.2d-%.2d-%.2d\r\n", ( uint16_t ) date.day, ( uint16_t ) date.month, ( uint16_t ) date.year );
log_printf( &logger, " Time : %.2d:%.2d:%.2d\r\n", ( uint16_t ) time.hours, ( uint16_t ) time.min, ( uint16_t ) time.sec );
log_printf( &logger, "- - - - - - - - - - - -\r\n" );
new_sec = time.sec;
Delay_ms ( 1 );
}
}

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.Rtc12

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. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.


rtc12_set_date
err_t rtc12_set_date(rtc12_t *ctx, rtc12_date_t rtc_date)
RTC 12 get time function.
rtc12_default_cfg
err_t rtc12_default_cfg(rtc12_t *ctx)
RTC 12 default configuration function.
application_task
void application_task(void)
Definition: main.c:87
rtc12_init
err_t rtc12_init(rtc12_t *ctx, rtc12_cfg_t *cfg)
RTC 12 initialization function.
rtc12_t
RTC 12 Click context object.
Definition: rtc12.h:157
rtc12_set_time
err_t rtc12_set_time(rtc12_t *ctx, rtc12_time_t rtc_time)
RTC 12 set time function.
rtc12_get_time
err_t rtc12_get_time(rtc12_t *ctx, rtc12_time_t *rtc_time)
RTC 12 get time function.
rtc12_cfg_setup
void rtc12_cfg_setup(rtc12_cfg_t *cfg)
RTC 12 configuration object setup function.
rtc12_cfg_t
RTC 12 Click configuration object.
Definition: rtc12.h:176
rtc12_get_date
err_t rtc12_get_date(rtc12_t *ctx, rtc12_date_t *rtc_date)
RTC 12 get date function.
RTC12_MAP_MIKROBUS
#define RTC12_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: rtc12.h:141
application_init
void application_init(void)
Definition: main.c:40
rtc12_time_t
RTC 12 Click time object.
Definition: rtc12.h:202
rtc12_date_t
RTC 12 Click date object.
Definition: rtc12.h:214