InetrfaceProducts NXP / Mbed 2 deprecated PCF2127_Demo

Demo code for PCF2127 (and PCF2129) library. This code can be executed with LCD screen on AppBoard. PCF2127 and PCF2129 are high accuracy real-time-clock (RTC) module. This library provides simple interface to accessing clock information.

Dependencies:   C12832 PCF2127 mbed

Demo code for PCF2127 library

Information

This demo code works with PC terminal and/or LCD screen on "mbed application board"

Information

The "PCF2127" library works for PCF2127T, PCF2127AT, PCF2129T and PCF2129AT.

The device information is available on the component page and the library page.

PCF2127T
PCF2127T is in SO16 package

main.cpp

Committer:
nxp_ip
Date:
2014-12-04
Revision:
0:8de826ed7578

File content as of revision 0:8de826ed7578:

/*
 *  A sample code for PCF2127 library
 *
 *  @author     Akifumi (Tedd) OKANO, NXP Semiconductors
 *  @version    1.5
 *  @date       04-Dec-2014
 *
 *  PCF2127 is a "real time clock (RTC)" module which is including a Xtal and TCXO
 *  http://www.nxp.com/products/interface_and_connectivity/real_time_clocks/rtcs_with_temp_compensation/series/PCF2127.html
 *
 *  RTC initializing part is ported from..
 *    http://mbed.org/users/roen/notebook/real-time/
 *
 *  This code is refined version of..
 *    http://developer.mbed.org/users/okano/code/NXP_PCF2127A/
 */

#include "mbed.h"
#include "C12832.h"
#include "PCF2127.h"

C12832          lcd( p5, p7, p6, p8, p11 );
PCF2127         rtc( p28, p27 );

void    show_time( void );
void    set_time( void );

int main()
{
    printf( "PCF2127 demo started.\r\n" );

    if ( rtc.is_init_required() ) {
        lcd.locate( 0, 0 );
        lcd.printf( "please set time on terminal" );

        set_time();

        lcd.cls();
    }

    lcd.locate( 0,20 );
    lcd.printf( "PCF2127 demo" );

    while ( 1 ) {
        show_time();
        wait( 0.1 );
    }
}

void show_time( void )
{
    struct tm   dt, *dtp;
    time_t      t;
    char        s[ 30 ];
    dtp = &dt;

    rtc.clear_intr();

    //  get time information from PCF2127
    t       = rtc.time( NULL );
    dtp     = localtime( &t );

    //  print time and date on terminal
    strftime( s, 30, "%H:%M:%S, %Y/%b/%d %a", dtp );
    printf( "%s\r\n", s );

    //  print time on LCD screen
    strftime( s, 20, "%H:%M:%S PCF2127", dtp );
    lcd.locate( 0, 0 );
    lcd.printf( "%s", s );

    //  print date on LCD screen
    strftime( s, 20, "%Y/%b/%d(%a)", dtp );
    lcd.locate( 0, 10 );
    lcd.printf( "%s", s );
}

void set_time( void )
{
#define MAX_CHAR_LENGTH 21
    char    s[ MAX_CHAR_LENGTH ];

    printf( "Enter current date and time:\r\n" );
    printf( "YYYY MM DD HH MM SS[enter]\r\n" );

    fgets( s, MAX_CHAR_LENGTH, stdin );
    printf( "user input: \"%s\"\r\n", s );

    rtc.set_time( s );
}