rtc3  2.0.0.0
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RTC 3 click

RTC3 click carries BQ32000, a real time clock with an integrated trickle charge circuit for automatic switchover to a backup power supply (the circuit maintains the backup charge with an onboard super capacitor).

click Product page


Click library

Software Support

We provide a library for the Rtc3 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Rtc3 Click driver.

Standard key functions :

Example key functions :

Examples Description

This application enables time measurment over RTC3 click.

The demo application is composed of two sections :

Application Init

Initialization driver enable's - I2C, set start time and date, enable counting and start write log.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
rtc3_cfg_setup( &cfg );
RTC3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
rtc3_init( &rtc3, &cfg );
rtc3.time.time_hours = 23;
rtc3.time.time_minutes = 59;
rtc3.time.time_seconds = 50;
rtc3_set_time( &rtc3 );
// Set Date: 1 ( Day of the week ), 31 ( day ), 12 ( month ) and 2018 ( year )
rtc3.date.day_of_the_week = 1;
rtc3.date.date_day = 31;
rtc3.date.date_month = 12;
rtc3.date.date_year = 2018;
rtc3_set_date( &rtc3 );
// Start counting
Delay_100ms( );
Delay_ms( 1000 );
}

Application Task

This is a example which demonstrates the use of RTC 3 Click board. RTC 3 Click communicates with register via I2C by write to register and read from register, set time and date, get time and date, enable and disable counting and set frequency by write configuration register. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on usb uart changes for every 1 sec.

void application_task ( void )
{
// Task implementation.
uint8_t time_seconds_new = 0xFF;
rtc3_get_time( &rtc3 );
rtc3_get_date( &rtc3 );
if ( time_seconds_new != rtc3.time.time_seconds )
{
if ( ( ( rtc3.time.time_hours | rtc3.time.time_minutes | rtc3.time.time_seconds ) == 0 ) && ( ( rtc3.date.date_day | rtc3.date.date_month ) == 1 ) )
{
log_printf( &logger, " Happy New Year \r\n" );
log_printf( &logger, "------------------\r\n" );
}
log_printf( &logger, " Time : %d:%d:%d \r\n Date: %d.%d.20%d.\r\n------------------\r\n", rtc3.time.time_hours, rtc3.time.time_minutes,
rtc3.time.time_seconds,
rtc3.date.date_day, rtc3.date.date_month, rtc3.date.date_year );
time_seconds_new = rtc3.time.time_seconds;
}
Delay_ms( 200 );
}

Note

Time stats measuring correctly but from 0 seconds, after 10 seconds.

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

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.