File content as of revision 7:56a45c690801:

#include    "mbed.h"
#include    "PCA995xA.h"

PCA995xA::PCA995xA( PinName i2c_sda, PinName i2c_scl, char i2c_address ) 
    : i2c_p( new I2C( i2c_sda, i2c_scl ) ), i2c( *i2c_p ), address( i2c_address )
{
}

PCA995xA::PCA995xA( I2C &i2c_, char i2c_address ) 
    : i2c_p( NULL ), i2c( i2c_ ), address( i2c_address )
{
}

PCA995xA::~PCA995xA() 
{
    if ( NULL != i2c_p )
        delete  i2c_p;
}

void PCA995xA::reset( void )
{
    char    v   = 0x06;
    i2c.write( 0x00, &v, 1 );
}

void PCA995xA::pwm( int port, float v )
{
    char    reg_addr;
    
    reg_addr    = pwm_register_access( port );
    write( reg_addr, (char)(v * 255.0) );
}

void PCA995xA::pwm( float *vp )
{
    int     n_of_ports  = number_of_ports();
    char    data[ n_of_ports + 1 ];
    
    *data    = pwm_register_access( 0 );
    
    for ( int i = 1; i <= n_of_ports; i++ )
        data[ i ]   = (char)(*vp++ * 255.0);
        
    write( data, sizeof( data ) );
}

void PCA995xA::current( int port, float v )
{
    char    reg_addr;
    
    reg_addr    = current_register_access( port );
    write( reg_addr, (char)(v * 255.0) );
}

void PCA995xA::current( float *vp )
{
    int     n_of_ports  = number_of_ports();
    char    data[ n_of_ports + 1 ];
    
    *data    = pwm_register_access( 0 );
    
    for ( int i = 1; i <= n_of_ports; i++ )
        data[ i ]   = (char)(*vp++ * 255.0);
        
    write( data, sizeof( data ) );
}

void PCA995xA::write( char *data, int length )
{
    *data   |= AUTO_INCREMENT;
    i2c.write( address, data, length );
}

void PCA995xA::write( char reg_addr, char data )
{
    char    c[2];

    c[0]    = reg_addr;
    c[1]    = data;

    i2c.write( address, c, 2 );
}

void PCA995xA::read( char reg_addr, char *data, int length )
{
    reg_addr    |= 0x80;
    i2c.write( address, (char *)(&reg_addr), 1, true );
    i2c.read(  address, data, length );
}

char PCA995xA::read( char reg_addr )
{
    i2c.write( address, (char *)(&reg_addr), 1, true );
    i2c.read(  address, (char *)(&reg_addr), 1 );

    return ( reg_addr );
}