unsigned int serial_out_i2c(unsigned int addr, int offset, int value)
{
//printk( "serial_out_i2c(%X):%X,%X\n", addr, offset, value );
unsigned short int data_hibyte;
unsigned short int data_lowbyte;
data_hibyte =(unsigned char) (value>>8);
data_lowbyte =(unsigned char) (value & 0xff);
if( addr != ALC5628_I2C_ADDR )
return 0;
//printk("(%d)", __LINE__);
// start
i2c_start_condition( &alc5628_i2c_dev );
// addr + write
i2c_serial_write_byte( &alc5628_i2c_dev, ALC5628_I2C_ADDR | ALC5628_I2C_WRITE );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// write register address
i2c_serial_write_byte( &alc5628_i2c_dev, offset );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// write data hibyte
i2c_serial_write_byte( &alc5628_i2c_dev, data_hibyte );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// write data lowbyte
i2c_serial_write_byte( &alc5628_i2c_dev, data_lowbyte );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// stop
i2c_stop_condition( &alc5628_i2c_dev );
return 0;
}
unsigned int serial_in_i2c(unsigned int addr, int offset)
{
unsigned short int data_hibyte=0;
unsigned short int data_lowbyte=0;
unsigned short int data;
//printk( "serial_in_i2c(%X):%X\n", addr, offset );
if( addr != ALC5628_I2C_ADDR )
return 0;
// start
i2c_start_condition( &alc5628_i2c_dev );
// addr + write
i2c_serial_write_byte( &alc5628_i2c_dev, ALC5628_I2C_ADDR |
ALC5628_I2C_WRITE );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
// write register address
i2c_serial_write_byte( &alc5628_i2c_dev, offset );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
// start
i2c_start_condition( &alc5628_i2c_dev );
// addr + read
i2c_serial_write_byte( &alc5628_i2c_dev, ALC5628_I2C_ADDR |
ALC5628_I2C_READ );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
// read data_hibyte
i2c_serial_read( &alc5628_i2c_dev, &data_hibyte );
//write ACK
i2c_ACK_w(&alc5628_i2c_dev, 0);
// read data_lowbyte
i2c_serial_read( &alc5628_i2c_dev, &data_lowbyte );
data = (data_hibyte<<8) | data_lowbyte;
// write negative-ACK
i2c_ACK_w( &alc5628_i2c_dev, 1 );
// stop
i2c_stop_condition( &alc5628_i2c_dev );
//printk( "in[%X]\n", data );
return data;
}
void i2c_serial_write(i2c_dev_t* pI2C_Dev, unsigned char *data)
{
i2c_serial_write_byte( pI2C_Dev, *data );
}