Demo code for PCF2127 library

Diff: main.cpp

Revision:

1:86dc8dfe6a20

Parent:

0:658f351580f0

Child:

2:47151300f95a

diff -r 658f351580f0 -r 86dc8dfe6a20 main.cpp
--- a/main.cpp	Tue Dec 09 07:23:50 2014 +0000
+++ b/main.cpp	Wed Dec 10 01:45:09 2014 +0000
@@ -2,8 +2,8 @@
  *  A sample code for PCF2127 library
  *
  *  @author     Akifumi (Tedd) OKANO, NXP Semiconductors
- *  @version    1.6
- *  @date       09-Dec-2014
+ *  @version    1.7
+ *  @date       10-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
@@ -14,7 +14,6 @@
  *  This code is refined version of..
  *    http://developer.mbed.org/users/okano/code/NXP_PCF2127A/
  */
- */
 
 #include "mbed.h"
 #include "PCF2127.h"
@@ -24,14 +23,26 @@
 void    show_time( void );
 void    set_time( void );
 
+void    RAM_dump( void );       //  for PCF2127 only
+void    RAM_read_test( void );  //  for PCF2127 only
+void    RAM_write_test( void ); //  for PCF2127 only
+void    RAM_test( int last_RAM_content_invalid );       //  for PCF2127 only
+
 int main()
 {
     printf( "PCF2127 demo started.\r\n" );
 
-    if ( rtc.is_init_required() ) {
+    int clock_integrity_fail    = rtc.is_init_required();
+
+    if ( clock_integrity_fail ) {
         set_time();
     }
 
+    /*
+     *  Next line can be enabled when using PCF2127 only
+     */
+    //RAM_test( clock_integrity_fail );
+
     while ( 1 ) {
         show_time();
         wait( 0.25 );
@@ -43,18 +54,17 @@
     struct tm   dt, *dtp;
     time_t      t;
     char        s[ 30 ];
-    
+
     dtp     = &dt;
 
     rtc.clear_intr();
 
     //  get time information from PCF2127
-    if ( PCF2127::TIME_FUNC_ERROR == (t   = rtc.time( NULL )) )
-    {
+    if ( PCF2127::TIME_FUNC_ERROR == (t   = rtc.time( NULL )) ) {
         printf( "error at reading time\r\n" );
         return;
     }
-    
+
     dtp     = localtime( &t );
 
     //  print time and date on terminal
@@ -75,3 +85,65 @@
 
     rtc.set_time( s );
 }
+
+void RAM_function_test( void )
+{
+}
+
+void RAM_dump( void )
+{
+    char    b[ 512 ];
+
+    if ( rtc.RAM_read( 0, b, 512 ) ) {
+        printf( "error at reading RAM\r\n" );
+    }
+
+    for ( int i = 0; i < 512; i++ ) {
+        if ( !(i % 16) ) {
+            printf( "\r\n  0x%03X(%03d): 0x", i, i );
+        }
+        printf( " %02X", b[ i ] );
+    }
+}
+
+const char *texts[] = {
+    "Love the life you live. Live the life you love.",
+    "It always seems impossible until it's done.",
+    "You'll never find a rainbow if you're looking down.",
+    "There is always light behind the clouds."
+};
+
+void RAM_test( int last_RAM_content_invalid )
+{
+    char    txt[ 64 ];
+    time_t  t;
+
+    if ( !last_RAM_content_invalid ) {
+        rtc.RAM_read( 0, (char *)&t, sizeof( t ) );
+        rtc.RAM_read( 16, txt, sizeof( txt ) );
+        printf( "RAM test read\r\n" );
+        printf( "  last program start was on %s\r", ctime( &t ) );
+        printf( "  last saved text was \"%s\"\r\n", txt );
+    }
+
+    t   = rtc.time( NULL );
+    rtc.RAM_write( 0, (char *)&t, sizeof( t ) );
+    rtc.RAM_write( 16, (char *)texts[ t % 4 ], strlen( texts[ t % 4 ] ) + 1 );
+}
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