Diff: PCF2129.cpp

Revision:

0:7f72438fee70

Child:

1:a2f545432493

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCF2129.cpp	Thu Jul 16 14:51:05 2015 +0000
@@ -0,0 +1,122 @@
+/*
+ *  PCF2129 library
+ *
+ */
+
+#include    "mbed.h"
+#include    "PCF2129.h"
+
+PCF2129::PCF2129( PinName sda, PinName scl, char addr ) : m_i2c( sda, scl),m_addr(addr)
+{
+    init( 0, 0, 0, 0x07 );      // int disable,CLKout diable
+}
+
+PCF2129::~PCF2129()
+{
+//    if ( NULL != m_i2c )
+//        delete  m_i2c;
+}
+
+int PCF2129::init( char vControl_1, char vControl_2, char vControl_3, char vCLKOUT_ctl )
+{
+    char    data[ 4 ];
+    int     err;
+
+    data[ 0 ]   = 0;            // Control_1; //  access start register address
+    data[ 1 ]   = vControl_1;
+    data[ 2 ]   = vControl_2;
+    data[ 3 ]   = vControl_3;
+
+    err     = m_i2c.write( m_addr , data, sizeof( data ) );
+    err    |= set_register( 0x0F, vCLKOUT_ctl );    // ClockOut Control
+
+    return ( err ? I2C_ACCESS_FAIL : NO_ERROR );
+}
+
+int PCF2129::is_init_required( void )
+{
+    return ( read_register( 0x03 ) & 0x80 ? true : false );
+}
+
+int PCF2129::set_time( struct tm *dtp ){
+    char        buf[ 8 ];
+    char        err;
+
+    buf[ 0 ]    = 0x03;             // Seconds;
+    buf[ 1 ]    = Dec2RtcData( dtp->tm_sec  );
+    buf[ 2 ]    = Dec2RtcData( dtp->tm_min  );
+    buf[ 3 ]    = Dec2RtcData( dtp->tm_hour );
+    buf[ 4 ]    = Dec2RtcData( dtp->tm_mday );
+    buf[ 5 ]    = Dec2RtcData( dtp->tm_wday );
+    buf[ 6 ]    = Dec2RtcData( dtp->tm_mon  + 1   );
+    buf[ 7 ]    = Dec2RtcData( dtp->tm_year - 100 );
+
+    err = m_i2c.write( m_addr, buf, 8 );
+
+    return ( err ? I2C_ACCESS_FAIL : NO_ERROR );
+}
+
+int PCF2129::set_time( time_t *tp ){
+    return ( set_time( localtime( tp ) ) );
+}
+
+time_t PCF2129::get_time( time_t *tp ){
+    struct tm   dt, *dtp;
+    time_t      t;
+    char        buf[ 8 ];
+
+    dtp = &dt;
+
+    buf[ 0 ]    = 0x03;         //Seconds;  //  read start register address
+
+    if ( m_i2c.write( m_addr, buf, 1 ) )
+        return ( TIME_FUNC_ERROR );
+
+    if ( m_i2c.read( m_addr, buf, 7 ) )
+        return ( TIME_FUNC_ERROR );
+
+    dtp->tm_sec     = RtcData2Dec( buf[ 0 ] );
+    dtp->tm_min     = RtcData2Dec( buf[ 1 ] );
+    dtp->tm_hour    = RtcData2Dec( buf[ 2 ] );
+    dtp->tm_mday    = RtcData2Dec( buf[ 3 ] );
+    dtp->tm_wday    = RtcData2Dec( buf[ 4 ] );
+    dtp->tm_mon     = RtcData2Dec( buf[ 5 ] ) - 1;
+    dtp->tm_year    = RtcData2Dec( buf[ 6 ] ) + 100;
+
+    t   = mktime( dtp );
+
+    if ( tp )
+        *tp  = t;
+
+    return( t );
+}
+
+char PCF2129::Dec2RtcData(char tmp){
+    return ((tmp/10)<<4) | ((tmp%10)&0x0F);
+}
+
+char PCF2129::RtcData2Dec(char tmp){
+    return (tmp&0x0F) + (tmp>>4)*10;
+}
+
+int PCF2129::set_register( char reg_addr, char reg_data )
+{
+    char    b[ 2 ];
+
+    b[ 0 ]    = reg_addr;
+    b[ 1 ]    = reg_data;
+
+    return ( m_i2c.write( m_addr, b, sizeof( b ) ) );
+}
+
+int PCF2129::read_register( char reg_addr )
+{
+    char    data;
+
+    data    = reg_addr;
+    m_i2c.write( m_addr, &data, 1 );
+    m_i2c.read( m_addr, &data, 1 );
+
+    return ( data );
+}
+