main.cpp

00001 /*
00002  *  A sample code for PCF2127 library
00003  *
00004  *  @author     Akifumi (Tedd) OKANO, NXP Semiconductors
00005  *  @version    1.5
00006  *  @date       04-Dec-2014
00007  *
00008  *  PCF2127 is a "real time clock (RTC)" module which is including a Xtal and TCXO
00009  *  http://www.nxp.com/products/interface_and_connectivity/real_time_clocks/rtcs_with_temp_compensation/series/PCF2127.html
00010  *
00011  *  RTC initializing part is ported from..
00012  *    http://mbed.org/users/roen/notebook/real-time/
00013  *
00014  *  This code is refined version of..
00015  *    http://developer.mbed.org/users/okano/code/NXP_PCF2127A/
00016  */
00017 
00018 #include "mbed.h"
00019 #include "C12832.h"
00020 #include "PCF2127.h"
00021 
00022 C12832          lcd( p5, p7, p6, p8, p11 );
00023 PCF2127         rtc( p28, p27 );
00024 
00025 void    show_time( void );
00026 void    set_time( void );
00027 
00028 int main()
00029 {
00030     printf( "PCF2127 demo started.\r\n" );
00031 
00032     if ( rtc.is_init_required() ) {
00033         lcd.locate( 0, 0 );
00034         lcd.printf( "please set time on terminal" );
00035 
00036         set_time();
00037 
00038         lcd.cls();
00039     }
00040 
00041     lcd.locate( 0,20 );
00042     lcd.printf( "PCF2127 demo" );
00043 
00044     while ( 1 ) {
00045         show_time();
00046         wait( 0.1 );
00047     }
00048 }
00049 
00050 void show_time( void )
00051 {
00052     struct tm   dt, *dtp;
00053     time_t      t;
00054     char        s[ 30 ];
00055     dtp = &dt;
00056 
00057     rtc.clear_intr();
00058 
00059     //  get time information from PCF2127
00060     t       = rtc.time( NULL );
00061     dtp     = localtime( &t );
00062 
00063     //  print time and date on terminal
00064     strftime( s, 30, "%H:%M:%S, %Y/%b/%d %a", dtp );
00065     printf( "%s\r\n", s );
00066 
00067     //  print time on LCD screen
00068     strftime( s, 20, "%H:%M:%S PCF2127", dtp );
00069     lcd.locate( 0, 0 );
00070     lcd.printf( "%s", s );
00071 
00072     //  print date on LCD screen
00073     strftime( s, 20, "%Y/%b/%d(%a)", dtp );
00074     lcd.locate( 0, 10 );
00075     lcd.printf( "%s", s );
00076 }
00077 
00078 void set_time( void )
00079 {
00080 #define MAX_CHAR_LENGTH 21
00081     char    s[ MAX_CHAR_LENGTH ];
00082 
00083     printf( "Enter current date and time:\r\n" );
00084     printf( "YYYY MM DD HH MM SS[enter]\r\n" );
00085 
00086     fgets( s, MAX_CHAR_LENGTH, stdin );
00087     printf( "user input: \"%s\"\r\n", s );
00088 
00089     rtc.set_time( s );
00090 }
00091